Answer: 10 grams of Hydrogen gas will be produced theoretically.
Explanation: The equation for the reaction between zinc metal and hydrochloric acid is:
As HCl is present in excess, therefore limiting reagent is Zinc metal as it limits the formation of product.
By stoichiometry,
1 mole of Zinc metal produces 1 mole of Hydrogen gas, therefore
Amount of Hydrogen gas produced can be calculated by:
Molar mass of Hydrogen = 2 g/mol
Mass of hydrogen gas produced = (5 moles )× (2 g/mol)
Mass of hydrogen gas produced = 10 grams
Grinding quartz crystals down to produce sand is an example of a?
-physical change
3. Eukarya...is the answer
Answer:
The mass of gas is 30.02 g.
Explanation:
Given data:
Volume of gas = 22.4 L
Density of gas = 1.34 g/L
Mass of gas = ?
Solution:
The given problem will be solved through density formula.
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
Now we will put the values in formula.
1.34 g/L = m /22.4 L
m = 1.34 g/L × 22.4 L
m = 30.02 g
The mass of gas is 30.02 g.
You should use Avogadro’s number for the conversion, because Avogadro’s Law states that there are 6.02 x 10^23 atoms per 1 mol of that substance.
