Which 2 macromolecules make up most of the cell membrane?.
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Ответ:
74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.
Explanation:
The balanced reaction is:
Na₂CO₃ + Ca(NO₃)₂ ⟶ CaCO₃ + 2 NaNO₃
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
Na₂CO₃: 1 mole Ca(NO₃)₂: 1 mole CaCO₃: 1 mole NaNO₃: 2 moleBeing the molar mass of the compounds:
Na₂CO₃: 106 g/moleCa(NO₃)₂: 164 g/mole CaCO₃: 100 g/mole NaNO₃: 85 g/molethen by stoichiometry the following quantities of mass participate in the reaction:
Na₂CO₃: 1 mole* 106 g/mole= 106 gCa(NO₃)₂: 1 mole* 164 g/mole= 164 g CaCO₃: 1 mole* 100 g/mole= 100 gNaNO₃: 2 mole* 85 g/mole= 170 gYou can apply the following rule of three: if by stoichiometry 106 grams of Na₂CO₃ produce 100 grams of CaCO₃, 79.3 grams of Na₂CO₃ produce how much mass of CaCO₃?
mass of CaCO₃= 74.81 grams
74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.