7 szkoły podstawowej

8 szkoły podstawowej

Chemia w zadaniach i przykładach. Zbiór zadań dla klas 7 i 8 szkoły podstawowej.

Chemia

Chemia 7

Chemia 7 i 8

Chemia Nowej Ery 7

Ciekawa chemia 7

Świat chemii 7

Dane:&nbsp; mr​=150 g &nbsp; Cp​=5% Szukane :&nbsp;

Dane: mr​=150 g &nbsp; Cp​=4% Szukane: ms​=? Rozwiązanie: Korzystając z wzoru na stężenie procentowe (Cp) wyznaczamy masę substancji, którą należy rozpuścić, aby otrzymać roztwór o danym stężeniu: Cp​=mr​ms​​⋅100% ms​=100%Cp​⋅mr​​ ms​=100%4%⋅150 g​ &nbsp; ms​=6 g &nbsp; Odpowiedź:&nbsp;Należy rozpuścić 6 g jodu.

Dane :&nbsp; Vw​=1dm3 ms​=250 g &nbsp; Szukane :&nbsp;

Dane : Cp1​=15% mr​=80 g &nbsp; mw​=20 g &nbsp; Szukane:

Dane :&nbsp; Vw​=0,5 dm3 &nbsp; mr​=2 kg &nbsp; Cp1​=10% Szukane :&nbsp;

Dane :&nbsp; mw​=75 g &nbsp; mr​=200 g &nbsp; Cp1​=5% Szukane :&nbsp;

Dane :&nbsp; mc​=100 g &nbsp; mr​=5 kg &nbsp; Cp1​=5% Szukane :&nbsp; Cp2​=?

Dane :&nbsp; mdod.soli​=20 g &nbsp; mr​=60 g &nbsp; Cp1​=12% Szukane :&nbsp;

Dane: mr​=200 g &nbsp; Cp1​=96% mw​=100 cm3=100 g &nbsp; Szukane:

Dane :&nbsp; ms​=40 g &nbsp; Cp1​=10% Cp2​=6% Szukane :&nbsp;

Dane :&nbsp; mw​=360 g &nbsp; Cp​=20% Szukane :&nbsp;

Dane: mCO(NH2​)2​​=6 g &nbsp; 1cz. CO(NH2​)2​ ⋅ 10cz. H2​O Szukane:

Dane:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/78e634344f5c64b787a9528e7cefc4bcf196a66b6ed58eb5fa8d6845c7ba2e6e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/78e634344f5c64b787a9528e7cefc4bcf196a66b6ed58eb5fa8d6845c7ba2e6e_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/583788cbbc6016ee45ebb1fec327899c25569a8f26988a35fddecdec29ac3d01_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/583788cbbc6016ee45ebb1fec327899c25569a8f26988a35fddecdec29ac3d01_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/7123fcd75f6b061c906e0143fcdaede60b963f3c8f853497217daa78fd33e2eb_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/7123fcd75f6b061c906e0143fcdaede60b963f3c8f853497217daa78fd33e2eb_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/81a2acaa3aad14c25a9ff16c9d4b5f08b49326941d4524dc9a18b89ae145875c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/81a2acaa3aad14c25a9ff16c9d4b5f08b49326941d4524dc9a18b89ae145875c_big.svg" type="image/svg+xml"></object> Szukane: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/22f7783f9801d7024e70c891fc63d6bd53c1c08a3162d15993ba961025fa911f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/22f7783f9801d7024e70c891fc63d6bd53c1c08a3162d15993ba961025fa911f_big.svg" type="image/svg+xml"></object> Rozwiązanie: Korzystając z wzoru na stężenie procentowe (Cp) wyznaczamy masę substancji, którą należy rozpuścić, aby otrzymać roztwór o danym stężeniu: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/beb9268c832db0b2a062aea4bc3f4437afdb62424c9653a9fe319148c5d797aa_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/beb9268c832db0b2a062aea4bc3f4437afdb62424c9653a9fe319148c5d797aa_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/11431ce5e3d8e0426035ff8ed888a34738176d1bb05ec06b2c1e033d95ffaed3_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/11431ce5e3d8e0426035ff8ed888a34738176d1bb05ec06b2c1e033d95ffaed3_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e5003531501d9b16562300828508f5b3adf68061cc7c94227a496091e34d8c3f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e5003531501d9b16562300828508f5b3adf68061cc7c94227a496091e34d8c3f_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2eba99cb2d9bba9389d5c661d7518cd5464dd648d81d88d3d6f85fa188634d3c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2eba99cb2d9bba9389d5c661d7518cd5464dd648d81d88d3d6f85fa188634d3c_big.svg" type="image/svg+xml"></object> &nbsp; Odpowiedź:&nbsp;Należy rozpuścić 6 g jodu.

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e77229fd013090f93eeac3735f39e88355803ff32b9232c57de17d72467e2d6e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e77229fd013090f93eeac3735f39e88355803ff32b9232c57de17d72467e2d6e_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/0d4f92b611bc26fd63500ca4e01f97353113ee97a9b8a328d0431c20b81bd109_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/0d4f92b611bc26fd63500ca4e01f97353113ee97a9b8a328d0431c20b81bd109_big.svg" type="image/svg+xml"></object> &nbsp; Szukane :&nbsp;

Dane : <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/07cc2017253bac58fac292a70ab0b57c0ceb7f660915407e9b4d8a814a9824bc_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/07cc2017253bac58fac292a70ab0b57c0ceb7f660915407e9b4d8a814a9824bc_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/5159e9ca3e110bd367dc347c582a020a9d7a434b41fd7b601fd5d443b957d1dd_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/5159e9ca3e110bd367dc347c582a020a9d7a434b41fd7b601fd5d443b957d1dd_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/1be219a5008bf8d429eb5774ed3812012fb7422b01c7d6e0adf05980bb59e2f8_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/1be219a5008bf8d429eb5774ed3812012fb7422b01c7d6e0adf05980bb59e2f8_big.svg" type="image/svg+xml"></object> &nbsp; Szukane:

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/0841cd10fd82b93821cc529057821e63908233287af388830242d2f6ecb288bd_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/0841cd10fd82b93821cc529057821e63908233287af388830242d2f6ecb288bd_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/be496648a3e58e534e5f40caf2582c8a9af40021a03570d9f747c74dc817b83b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/be496648a3e58e534e5f40caf2582c8a9af40021a03570d9f747c74dc817b83b_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c95729a82fe7afa3325782dd50b167fa0b5d4f17b8eb237a260cbe33dd7e6381_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c95729a82fe7afa3325782dd50b167fa0b5d4f17b8eb237a260cbe33dd7e6381_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/28af5a40fc02fd94768e437fafeae922bd45c8ac04b417dafa784c24c81d6a2f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/28af5a40fc02fd94768e437fafeae922bd45c8ac04b417dafa784c24c81d6a2f_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/1832b59d6ba30627a09d2301dab389884f810525e05da0def8d7ca6b83dc3532_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/1832b59d6ba30627a09d2301dab389884f810525e05da0def8d7ca6b83dc3532_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/58953e08d474b5a995c13dabceec5f694e3e0daa3abccbbc99f9abced6f32429_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/58953e08d474b5a995c13dabceec5f694e3e0daa3abccbbc99f9abced6f32429_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2c1c104fd17158a32663f52b0f26626cffad508046a55b99f897f22ae79ec758_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2c1c104fd17158a32663f52b0f26626cffad508046a55b99f897f22ae79ec758_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/8e08600858c6dea2d5c133a5a3705dd738fa792fa75c15aa3bd2918af8e8274b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/8e08600858c6dea2d5c133a5a3705dd738fa792fa75c15aa3bd2918af8e8274b_big.svg" type="image/svg+xml"></object> Szukane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2a4c5066f617c8761cf5f645d5d593cbf0322276f556fb53d2f92566f0e4ce4e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2a4c5066f617c8761cf5f645d5d593cbf0322276f556fb53d2f92566f0e4ce4e_big.svg" type="image/svg+xml"></object> Rozwiązanie :&nbsp; Dysponujemy 0,5 kg, czyli 500 g 12-procentowego roztworu wody z cukrem. Obliczmy masę cukru: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/1f94c3e54c197bdfaf8b4e1de0ca52ea261ca61774b50b1a71028b547fdc6ede_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/1f94c3e54c197bdfaf8b4e1de0ca52ea261ca61774b50b1a71028b547fdc6ede_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/72d219e10c9ef662cab432b3c54b15d78256c4ba248fccfb55a0142c26b84e9a_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/72d219e10c9ef662cab432b3c54b15d78256c4ba248fccfb55a0142c26b84e9a_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/7d7bcb7015567433e7f1ad9e413816a9bd692504c5d1b550c67e6abb07c725a1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/7d7bcb7015567433e7f1ad9e413816a9bd692504c5d1b550c67e6abb07c725a1_big.svg" type="image/svg+xml"></object> &nbsp; W roztworze znajduje się więc 60 g cukru. Następnie z roztworu odparowano 100 cm3 wody. Wiedząc, że gęstość wody wynosi 1 g/cm3 możemy powiedzieć, że odparowano 100 g wody. Masa nowego roztworu wynosi więc: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b0c251410b64a9f2449eb123bb91981e02c006c76cf5528def8a83bd23ee0736_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b0c251410b64a9f2449eb123bb91981e02c006c76cf5528def8a83bd23ee0736_big.svg" type="image/svg+xml"></object> &nbsp; Znając masę substancji oraz masę nowego roztworu wyznaczamy jego stężenie: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/71e8ce875bd4cfc0eebe2dbe3006724caec0bdf48f244970b1a7c03e25823966_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/71e8ce875bd4cfc0eebe2dbe3006724caec0bdf48f244970b1a7c03e25823966_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c1e7c3c4fed60f2654bd0d9be1249dcb99967022b3d9237fdd1e022fbefe5b5c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c1e7c3c4fed60f2654bd0d9be1249dcb99967022b3d9237fdd1e022fbefe5b5c_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/76370d3042d46a8601f4590b9e5abd90382d0c1e9a6147ffa74b5530ff1ffed3_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/76370d3042d46a8601f4590b9e5abd90382d0c1e9a6147ffa74b5530ff1ffed3_big.svg" type="image/svg+xml"></object> Odpowiedź: Stężenie procentowe roztworu po odparowaniu wody wynosi 15%.

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b8385bc8a74d9caf6de60e848d5c37d5c6fecd441e33c9e8564c93cd2ca3c965_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b8385bc8a74d9caf6de60e848d5c37d5c6fecd441e33c9e8564c93cd2ca3c965_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b9896f737260dd6acd9802cd034ce3bdc8bb9f19f1386141a5160ce1125ecba2_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b9896f737260dd6acd9802cd034ce3bdc8bb9f19f1386141a5160ce1125ecba2_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_big.svg" type="image/svg+xml"></object> Szukane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2a4c5066f617c8761cf5f645d5d593cbf0322276f556fb53d2f92566f0e4ce4e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2a4c5066f617c8761cf5f645d5d593cbf0322276f556fb53d2f92566f0e4ce4e_big.svg" type="image/svg+xml"></object>

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/38c4fc123ca7ed1004ace5d48d43aa71d63022068c038c391bd2d3e7f760a4e3_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/38c4fc123ca7ed1004ace5d48d43aa71d63022068c038c391bd2d3e7f760a4e3_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/a9f65667a49a732f50ca380ff8b5cec8037027a7146842ab30d996c94e040bdf_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/a9f65667a49a732f50ca380ff8b5cec8037027a7146842ab30d996c94e040bdf_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/5092c0d0a53f25833fa0da5321dd177285286ab35265f49bbeda403b98807828_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/5092c0d0a53f25833fa0da5321dd177285286ab35265f49bbeda403b98807828_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/fb1d674e0425c6c0618f3bf82d9800d77c9a161cb8e42318dec16bc39e659501_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/fb1d674e0425c6c0618f3bf82d9800d77c9a161cb8e42318dec16bc39e659501_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/494456a6dd411fa5963bd9d373a9c7ac8057824b9662f29e0838a898522aca2c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/494456a6dd411fa5963bd9d373a9c7ac8057824b9662f29e0838a898522aca2c_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/552120914d897b354b82c7c645ef4d7454a6a2133dcc9c96ac3f538de36bca1e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/552120914d897b354b82c7c645ef4d7454a6a2133dcc9c96ac3f538de36bca1e_big.svg" type="image/svg+xml"></object> &nbsp; Szukane:

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/764fd32abbaa94bf44f6bca582c1bea15bfc755f86609731f491f2f016bc8c94_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/764fd32abbaa94bf44f6bca582c1bea15bfc755f86609731f491f2f016bc8c94_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c95729a82fe7afa3325782dd50b167fa0b5d4f17b8eb237a260cbe33dd7e6381_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c95729a82fe7afa3325782dd50b167fa0b5d4f17b8eb237a260cbe33dd7e6381_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d6bd6a0793f99337647529ba6fd4460f72355df635c9105a600e4b96a8f1535b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d6bd6a0793f99337647529ba6fd4460f72355df635c9105a600e4b96a8f1535b_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d8dadc2b3e1c2634bb110d85e9604cf2876181884c86aa3a3e085b94abcd5054_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d8dadc2b3e1c2634bb110d85e9604cf2876181884c86aa3a3e085b94abcd5054_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c804a98d5439552c68b142cc07a863443534ed602f7ab7b4067edefc8c34f486_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/6198b4968507b313eaebeb1e8005db29bcbc3a0d1d8eff97d848500387734d15_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/6198b4968507b313eaebeb1e8005db29bcbc3a0d1d8eff97d848500387734d15_big.svg" type="image/svg+xml"></object> Szukane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/af184f8b65b8001ef7e79bdbc6d2b3d2db3b65fb162d2fd337a7f6ccef140567_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/af184f8b65b8001ef7e79bdbc6d2b3d2db3b65fb162d2fd337a7f6ccef140567_big.svg" type="image/svg+xml"></object> Rozwiązanie :&nbsp; Obliczamy zawartość substancji w pierwszym roztworze: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/6ae01780b8e7c96aa6cbccf589737481c7a5c1cd4b0d081e289f5f2822f33c10_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/6ae01780b8e7c96aa6cbccf589737481c7a5c1cd4b0d081e289f5f2822f33c10_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/80800033b6f89f6ff9263d057ab267a778283eba9b2546be560b2c8a7e399b3d_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/80800033b6f89f6ff9263d057ab267a778283eba9b2546be560b2c8a7e399b3d_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/95aa76f2eae66bf82106b7010a90550c68e714492a7afbeed259e3352bc606d1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/95aa76f2eae66bf82106b7010a90550c68e714492a7afbeed259e3352bc606d1_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/9fc1136906ce705e7fad383cf13c08099da5b7f7a4f7ce61873074c6fb8823ee_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/9fc1136906ce705e7fad383cf13c08099da5b7f7a4f7ce61873074c6fb8823ee_big.svg" type="image/svg+xml"></object> &nbsp; W roztworze znajduje się więc 40 g substancji. Obliczmy teraz jaką masę musi mieć roztwór, aby 40 g substancji stanowiło 8%: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/71e8ce875bd4cfc0eebe2dbe3006724caec0bdf48f244970b1a7c03e25823966_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/71e8ce875bd4cfc0eebe2dbe3006724caec0bdf48f244970b1a7c03e25823966_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/06bf15a4f3a53563cc29528fe04f19459b041c04edb29ac97037bb695b8b9c0c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/06bf15a4f3a53563cc29528fe04f19459b041c04edb29ac97037bb695b8b9c0c_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/a066f088ed86eab086ee7a04e53f6c361e6034cc9404e8f9e70c989366f79ed9_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/a066f088ed86eab086ee7a04e53f6c361e6034cc9404e8f9e70c989366f79ed9_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/211e43c0b6b1764ac84d68f9079655fd8d763987533e2d3df431eab9708c81eb_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/211e43c0b6b1764ac84d68f9079655fd8d763987533e2d3df431eab9708c81eb_big.svg" type="image/svg+xml"></object> &nbsp; Nowy roztwór musi mieć więc masę 500 g. Należy więc odparować: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/ce944a1d8f849c078e008c0ef2527edc9a69ef4ef19cf9d0fece7c7b4a547d2e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/ce944a1d8f849c078e008c0ef2527edc9a69ef4ef19cf9d0fece7c7b4a547d2e_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/dd514faccb208877859720fb762967798428690db32be68b3cb2f5c091efa80a_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/dd514faccb208877859720fb762967798428690db32be68b3cb2f5c091efa80a_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/3f4921ae9e7191723c29ec17f71bc5618cd624c408afb8dc22f3c21f2b006c82_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/3f4921ae9e7191723c29ec17f71bc5618cd624c408afb8dc22f3c21f2b006c82_big.svg" type="image/svg+xml"></object> &nbsp; Odpowiedź: Należy odparować 300 g wody.

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/0801931183c57b6e4cc58af1633230d47da3d254239470e3ec01ab8d65bf8347_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/0801931183c57b6e4cc58af1633230d47da3d254239470e3ec01ab8d65bf8347_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e8dab02e95af701e4db9c0a11a45c0c99c06a26dc92bd8ce08d2b44485cca5a1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e8dab02e95af701e4db9c0a11a45c0c99c06a26dc92bd8ce08d2b44485cca5a1_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/af434fd16cf5bd972fabab059e44288df7fe2d5c1149325a87b447180343bf4f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/af434fd16cf5bd972fabab059e44288df7fe2d5c1149325a87b447180343bf4f_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/df3ff56fe6e2a13c2d85e6b8258a4a10b107100d146ee63a2a4cc42ab6b7aed0_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/df3ff56fe6e2a13c2d85e6b8258a4a10b107100d146ee63a2a4cc42ab6b7aed0_big.svg" type="image/svg+xml"></object> Szukane:

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