8 szkoły podstawowej

Świat chemii 8

Chemia

Chemia 7 i 8

Chemia 8

Chemia Nowej Ery 8

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

Ciekawa chemia 8

Wzór sumaryczny mentolu: <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/915f9bdef690891da5bca7a7ec6db7d490323701ff26f2b340750ce12bff3ccc_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/915f9bdef690891da5bca7a7ec6db7d490323701ff26f2b340750ce12bff3ccc_big.svg" type="image/svg+xml"></object> &nbsp;&nbsp; Masy atomowe:

Dane:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/977d46a495e0cc262fa44b3fdc10e09d401b66fc30f2bfed9476063b09f1c66c_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/977d46a495e0cc262fa44b3fdc10e09d401b66fc30f2bfed9476063b09f1c66c_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/8b26fdf3d8cd0f7db9b71a67f62a89db08658acca0e2765603cf228cb8535528_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/8b26fdf3d8cd0f7db9b71a67f62a89db08658acca0e2765603cf228cb8535528_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/dee8fd3ec9e84966a5f642c7c7c82a7fafdcb76bbef8fb325e8c696f9dc00541_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/dee8fd3ec9e84966a5f642c7c7c82a7fafdcb76bbef8fb325e8c696f9dc00541_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; Szukane:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/6407709225b0815f21d644cb76fcd48c560a8ec99bc6b74fd7ee56976d6e986b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/6407709225b0815f21d644cb76fcd48c560a8ec99bc6b74fd7ee56976d6e986b_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; Rozwiązanie:&nbsp; Znając objętość i gęstość alkoholu obliczamy jego masę, w tym celu przekształcamy wzór na gęstość:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/5c4e970dbd822a27129868ee6aae36138c2b0b11d8c56a3a71e135104cf03d03_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/5c4e970dbd822a27129868ee6aae36138c2b0b11d8c56a3a71e135104cf03d03_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp;

Dane:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/8d0be55ad0f538e1481711390c4ced4324942424b93572c27f913d43469a85e7_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/8d0be55ad0f538e1481711390c4ced4324942424b93572c27f913d43469a85e7_big.svg" type="image/svg+xml"></object> &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/2d333f414141a0b06f4b20d0647d6450ea4eda69155cd149ba78ee95a576ebd4_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/2d333f414141a0b06f4b20d0647d6450ea4eda69155cd149ba78ee95a576ebd4_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/866c3f2a84aee8f1483347c606648b52143ac31c518160c21ba6e02ba44c9585_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/866c3f2a84aee8f1483347c606648b52143ac31c518160c21ba6e02ba44c9585_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/237719a72d9d571b7b149ce1b605779cef49b18f2eb12310d0978dbfed239b8b_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/237719a72d9d571b7b149ce1b605779cef49b18f2eb12310d0978dbfed239b8b_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; Szukane:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/72d58557a67af27e1bfe3671632c24734bb4c2b323ba98a307de9787db493c18_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/72d58557a67af27e1bfe3671632c24734bb4c2b323ba98a307de9787db493c18_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; Rozwiązanie:&nbsp;&nbsp; Znając objętość oraz gęstość roztworu alkoholu obliczamy jego masę, w tym celu przekształcamy wzór na gęstość:&nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/5c4e970dbd822a27129868ee6aae36138c2b0b11d8c56a3a71e135104cf03d03_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/5c4e970dbd822a27129868ee6aae36138c2b0b11d8c56a3a71e135104cf03d03_big.svg" type="image/svg+xml"></object> &nbsp; &nbsp; <object class="math small" data="https://odrabiamy.pl/api/v3/math_formulas/d1c25bc310c99765a4e6bb841ea141ecd2b34cb40a1dca2340250b8a8e615889_small.svg" type="image/svg+xml"></object><object class="math big" data="https://odrabiamy.pl/api/v3/math_formulas/d1c25bc310c99765a4e6bb841ea141ecd2b34cb40a1dca2340250b8a8e615889_big.svg" type="image/svg+xml"></object> &nbsp;&nbsp;

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