Oblicz masę każdego z produktów reakcji rozkładu 225 g tlenku magnezu jeżeli masa otrzymanego tlenu była 4 razy mniejsza od masy magnezu. 2MgO=2Mg + O2

45g tlenu i 45g magnezu
45g tlenu i 11,25g magnezu
45g magnezu i 11,2g tlenu

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false