The chemical symbol for sodium bicarbonate is NaHCO3. Its molar mass is 84 g/mol. In each of one mol of sodium bicarbonate their is one mole of carbon dioxide with the molar mass of 44 grams per mol. We determine the number of moles in 0.10 g of sodium bicarbonate.
n sodium bicarbonate = (0.10 g) / (84 grams / mol)
= 1.19 x 10-3 moles sodium bicarbonate
Therefore, there are also 1.19 x 10-3 moles of carbon dioxide.
3.44x10^23 divided by 6.02x10^23 equals 0.571 mol Cu.
Answer:
a physical change
Explanation:
here's why a chemical change produces new chemical products in order for sugar and water to be a chemical change something new would need to resolve a chemical reaction would have to occur
The question is incomplete, the complete question is found in the image attached to this answer.
Answer:
0.3
Explanation:
Molar mass of benzene = 78 g/mol
Molar mass of heptane = 100 g/mol
number of moles of heptane = 59 g/100 g/mol = 0.59 moles
number of moles of benzene = 103 g/78 g/mol = 1.32 moles
Total number of moles = 0.59 + 1.32 = 1.91 moles
Mole fraction of heptane = 0.59/1.91 = 0.31