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; Cp1​=30% Cp2​=0% Cp​=22,5% mr30%​=150g Szukane :&nbsp;

Dane :&nbsp; Cp1​=2% Cp2​=0,5% mr2%​=100g mr0,5%​=50g Szukane :&nbsp;

Dane :&nbsp; Cp1​=4% &nbsp;&nbsp; Cp​=5% &nbsp; mr4%​=200g &nbsp; mr5%​=300g &nbsp; Szukane :&nbsp; Cp2​=? &nbsp; Rozwiązanie :&nbsp; &nbsp;<img src="https://prod.odrabiamy-assets.pl/uploads/content_image/image/25449/QSQGDo4pgb9YUTowd8jutA%3D%3D_3a26f574b640aad8aa2771a679aab55f42e658e7312049dd5a7617579c51f170.jpg"> Jeżeli końcowy roztwór miał masę 300g, to roztworu o nieznanym stężeniu użyto:&nbsp; 300g−200g=100g Zatem : &nbsp; 200100​=x%−5%5%−4%​ &nbsp; 100⋅(x%−5%)=200⋅(5%−4%) &nbsp; x−5=10−8 x=2+5 x=7% Odpowiedź: Stężenie użytego roztworu wynosiło 7%.

Dane :&nbsp; Cp1​=10% Cp2​=1% Cp​=2% mr2%​=900g Szukane :&nbsp;

Dane :&nbsp; Cp1​=70% Cp2​=30% Cp3​=5% mr70%​=100g mr30%​=300g mr5%​=400g Szukane :&nbsp;

Dane :&nbsp; Cp1​=0% Cp2​=5% Cp​=2,5% mr5%​=10g Szukane :

Dane :&nbsp; Cp1​=0% Cp2​=20% Cp​=15% mr20%​=400g Szukane :&nbsp;

Dane :&nbsp; Cp1​=30% Cp2​=0% Cp​=3% mr3%​=80g Szukane :&nbsp; mr30%​=? Rozwiązanie :&nbsp; &nbsp;<img src="https://prod.odrabiamy-assets.pl/uploads/content_image/image/27882/d5T0Y6D7SqMlVALUbPtn2w%3D%3D_a0b3e2f0293b8bffa91e876ae6ffab92179b83e0952cc6fe5df7142abd783e11.jpg"> Zatem :&nbsp; yx​=30%−3%3%−0%​=273​=91​ Nalezy rozwiązać układ równań :&nbsp; {x+y=80gyx​=91​​ 1+9=10 80g:10=8g 1⋅8g=8g &nbsp; Odpowiedź: Należy użyć 8g perhydrolu&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/71b91846ac9ad80b8d88287e57495053d24e8f6f8e9ee0c17b258799178a9ddf_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/71b91846ac9ad80b8d88287e57495053d24e8f6f8e9ee0c17b258799178a9ddf_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2d9cf6158ba5befd83ae56034ccf8176790d244543a34efd6a5998ccdb5889f4_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2d9cf6158ba5befd83ae56034ccf8176790d244543a34efd6a5998ccdb5889f4_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b94903880dadb87044d3d5187a987d9d24343e5d799b86c1b08aff5e7832955c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b94903880dadb87044d3d5187a987d9d24343e5d799b86c1b08aff5e7832955c_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2595e02cf33dcbaf473c6f98b24cc0664dc4db3aa1b65fbf92965a87693c9d07_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2595e02cf33dcbaf473c6f98b24cc0664dc4db3aa1b65fbf92965a87693c9d07_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e253027e9c30acda3006db9c204287e813eded9e0641e7500b9c2b0dc4357700_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e253027e9c30acda3006db9c204287e813eded9e0641e7500b9c2b0dc4357700_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/16dfeb7a04b9add2610dff220d793deaef4c2816ad5b75d2a93571589779f12e_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/16dfeb7a04b9add2610dff220d793deaef4c2816ad5b75d2a93571589779f12e_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b1329268794d47652efb52ce33c86f42df8b0047ca603bb5772c474ebcf341c3_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b1329268794d47652efb52ce33c86f42df8b0047ca603bb5772c474ebcf341c3_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d29899c49bb1ee3ef878cc4f164c51a1abec644e25bf7986878356def35d6f35_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d29899c49bb1ee3ef878cc4f164c51a1abec644e25bf7986878356def35d6f35_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b06d8905e1202e190ca9f5ace8ed27465f76854a1e091048bfc11e1dd6a9c3ec_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b06d8905e1202e190ca9f5ace8ed27465f76854a1e091048bfc11e1dd6a9c3ec_big.svg" type="image/svg+xml"></object> &nbsp;&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> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d7fd770b61f6e4205a379c125cfef6346e7e929a3811f50c85e0c05cfe46beaa_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d7fd770b61f6e4205a379c125cfef6346e7e929a3811f50c85e0c05cfe46beaa_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/9ddabfe8e8ff9d9f8409ade5e3e30e7c113febc55e215a01b305b4741212275b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/9ddabfe8e8ff9d9f8409ade5e3e30e7c113febc55e215a01b305b4741212275b_big.svg" type="image/svg+xml"></object> &nbsp; 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> &nbsp; Rozwiązanie :&nbsp; &nbsp;<img src="https://prod.odrabiamy-assets.pl/uploads/content_image/image/25449/QSQGDo4pgb9YUTowd8jutA%3D%3D_3a26f574b640aad8aa2771a679aab55f42e658e7312049dd5a7617579c51f170.jpg"> Jeżeli końcowy roztwór miał masę 300g, to roztworu o nieznanym stężeniu użyto:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/37c590297fee084c2b40dbac939688cde3cb46e7ac82961d1b6d26f8042e729f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/37c590297fee084c2b40dbac939688cde3cb46e7ac82961d1b6d26f8042e729f_big.svg" type="image/svg+xml"></object> Zatem : &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e73247bd0771bcb4721064a4ecd434c277024cf6091b3ae04d9659bf1dbab233_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e73247bd0771bcb4721064a4ecd434c277024cf6091b3ae04d9659bf1dbab233_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d24d9ff4b47bdf27932e95a1ab39bb5c9df55c86577bc0d4fcad5ae59a5f7d37_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d24d9ff4b47bdf27932e95a1ab39bb5c9df55c86577bc0d4fcad5ae59a5f7d37_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/ad2f8352310c9b92f4e4cede37ca7a8fda0a5e1a3ce5c175b494f26a0af2219a_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/ad2f8352310c9b92f4e4cede37ca7a8fda0a5e1a3ce5c175b494f26a0af2219a_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/cf9626e8e1cbbe06178e8298d2f82cdf78728659aa7e433f47b2b77340785975_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/cf9626e8e1cbbe06178e8298d2f82cdf78728659aa7e433f47b2b77340785975_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/9a6d0de8c63f6db180b96e5289abd00069d931baf6cb1220ee3339d4c72d8a81_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/9a6d0de8c63f6db180b96e5289abd00069d931baf6cb1220ee3339d4c72d8a81_big.svg" type="image/svg+xml"></object> Odpowiedź: Stężenie użytego roztworu wynosiło 7%.

Dane :&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/a5ff3c76ccc672b977b2f07a9ab6b75d906c8b6b15b477c5244169af6c580f5c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/a5ff3c76ccc672b977b2f07a9ab6b75d906c8b6b15b477c5244169af6c580f5c_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/fc12db0ef6954d14b5634c3e38df802fc392418152a402ae53d1308f8299ec84_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/fc12db0ef6954d14b5634c3e38df802fc392418152a402ae53d1308f8299ec84_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/094725ef4f76d3abe2d2ed94048d89655ac887c3917a6139d3cdea7db9391f5b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/094725ef4f76d3abe2d2ed94048d89655ac887c3917a6139d3cdea7db9391f5b_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/963e61083ea616c49caf45b69659f8e2b28858374b1fb54adaeb14f1e187799c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/963e61083ea616c49caf45b69659f8e2b28858374b1fb54adaeb14f1e187799c_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/a419f9726fb20bcdc663a2eecdf5db36da745e983f71fb1915d121501aca95e0_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/a419f9726fb20bcdc663a2eecdf5db36da745e983f71fb1915d121501aca95e0_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/bd97f4cde47b4ef2b16242b99762a26c47c71df2e4d14e57ede4a4bb228f72f1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/bd97f4cde47b4ef2b16242b99762a26c47c71df2e4d14e57ede4a4bb228f72f1_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/c7585e4d053cd21a8c38abed649207c09aa1c4ef3408f14e774026aa0835dfd5_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/c7585e4d053cd21a8c38abed649207c09aa1c4ef3408f14e774026aa0835dfd5_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/736af79f1b807f1808175b27d322e3c9c132b8354c3f64c032fe6157312f7e20_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/736af79f1b807f1808175b27d322e3c9c132b8354c3f64c032fe6157312f7e20_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/4f5e200cbdc09ece499d5755ac0360e71a0f5da81ae8d3163f682e0a896114e0_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/4f5e200cbdc09ece499d5755ac0360e71a0f5da81ae8d3163f682e0a896114e0_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b9719437fe13a515773a0c2e6c1727df155c808e3233acd904b6d2c1081db249_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b9719437fe13a515773a0c2e6c1727df155c808e3233acd904b6d2c1081db249_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/eaf044eca90381c2f7fea3f1ce3e790266b19199479032299f5526d7c2b8c01d_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/eaf044eca90381c2f7fea3f1ce3e790266b19199479032299f5526d7c2b8c01d_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/8b389a8021819d59566d60fca62a6eba2185b84579f6c88d4bb3e6a6265f28e8_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/8b389a8021819d59566d60fca62a6eba2185b84579f6c88d4bb3e6a6265f28e8_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/6290370fb1c2b378a2a26259ceae56397ee940545851494a07f9588e64bbe1b1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/6290370fb1c2b378a2a26259ceae56397ee940545851494a07f9588e64bbe1b1_big.svg" type="image/svg+xml"></object> Szukane :

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/b9719437fe13a515773a0c2e6c1727df155c808e3233acd904b6d2c1081db249_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/b9719437fe13a515773a0c2e6c1727df155c808e3233acd904b6d2c1081db249_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/faff8ed50833233ddb767513117febf5e2fed093301550bd88aa148a6000d77a_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/faff8ed50833233ddb767513117febf5e2fed093301550bd88aa148a6000d77a_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/bf559216cfc6f3305aa63eda74d34eef8ddb84cba7f473310674718d12406c1d_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/bf559216cfc6f3305aa63eda74d34eef8ddb84cba7f473310674718d12406c1d_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/85c49cb52c720ecbf2dcfbfe27ac507870cf2916e336b93a613e5bcf9546f651_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/85c49cb52c720ecbf2dcfbfe27ac507870cf2916e336b93a613e5bcf9546f651_big.svg" type="image/svg+xml"></object> Szukane :&nbsp;

Dane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/71b91846ac9ad80b8d88287e57495053d24e8f6f8e9ee0c17b258799178a9ddf_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/71b91846ac9ad80b8d88287e57495053d24e8f6f8e9ee0c17b258799178a9ddf_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2d9cf6158ba5befd83ae56034ccf8176790d244543a34efd6a5998ccdb5889f4_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2d9cf6158ba5befd83ae56034ccf8176790d244543a34efd6a5998ccdb5889f4_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/40919fe7602d24b5883a0ca2e1cebc086fe8a9ecd43c4b70f38fca6d892cda6f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/40919fe7602d24b5883a0ca2e1cebc086fe8a9ecd43c4b70f38fca6d892cda6f_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/5ba5957e4621410df36646fcb264f93850e9bad556e6a173f56f828536360df1_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/5ba5957e4621410df36646fcb264f93850e9bad556e6a173f56f828536360df1_big.svg" type="image/svg+xml"></object> Szukane :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/45c1f8388c1262031c6bbbafbd063e8e53931a14246ae95163c1d64cb323ab42_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/45c1f8388c1262031c6bbbafbd063e8e53931a14246ae95163c1d64cb323ab42_big.svg" type="image/svg+xml"></object> Rozwiązanie :&nbsp; &nbsp;<img src="https://prod.odrabiamy-assets.pl/uploads/content_image/image/27882/d5T0Y6D7SqMlVALUbPtn2w%3D%3D_a0b3e2f0293b8bffa91e876ae6ffab92179b83e0952cc6fe5df7142abd783e11.jpg"> Zatem :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/581192d28e6e1d13556bb31b894b0544b202a81f4d5ab580bba0bd0f90dc6356_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/581192d28e6e1d13556bb31b894b0544b202a81f4d5ab580bba0bd0f90dc6356_big.svg" type="image/svg+xml"></object> Nalezy rozwiązać układ równań :&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/15fbd871e09e2b300a1740c4c7f9f18d281c1426a88755c585089ca63ba154e4_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/15fbd871e09e2b300a1740c4c7f9f18d281c1426a88755c585089ca63ba154e4_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/a64cca3ef36e196bb24f2dff4a0700ea936aa9c5ed45af033f505128eb86601f_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/a64cca3ef36e196bb24f2dff4a0700ea936aa9c5ed45af033f505128eb86601f_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/e3628c86721a009e824690b6d2c06ab927bf3ae0330c26263dde91f399fe0928_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/e3628c86721a009e824690b6d2c06ab927bf3ae0330c26263dde91f399fe0928_big.svg" type="image/svg+xml"></object> <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d885499a88c005e4997ebf9a6a64cda1edf7560a8e70acea026f0b3a0fa4ba4a_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d885499a88c005e4997ebf9a6a64cda1edf7560a8e70acea026f0b3a0fa4ba4a_big.svg" type="image/svg+xml"></object> &nbsp; Odpowiedź: Należy użyć 8g perhydrolu&nbsp;

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