Answer:
XY₂Z₄
2.35 mol Z
Explanation:
A sample of the compound contains 0.221 mol X, 0.442 mol Y, and 0.884 mol Z. We can find the simplest formula (empirical formula) by <em>dividing all the numbers of moles by the smallest one</em>.
X: 0.221/0.221 = 1
Y: 0.442/0.221 = 2
Z: 0.884/0.221 = 4
The simplest formula is XY₂Z₄.
The molar ratio of X to Z is 1:4. The moles of Z in a sample that contained 0.588 moles of X is:
0.588 mol X × (4 mol Z/1 mol X) = 2.35 mol Z
Answer:
Glaciers.
Explanation:
Glaciers are masses of ice that forms in mountainous areas.
Answer:
a marble about to reach the bottom of the slope
Explanation:
hope this helps
The mass of Calcium carbonate needed : 246 g
<h3>Further explanation</h3>
Reaction
CaCO₃(s)→CaO(s)+CO₂(g)
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.
Then for 55 L of CO₂, mol :
From the equation, mol ratio for mol CaCO₃ : mol CO₂ = 1 : 1, so :
mol CaCO₃ = mol CO₂ = 2.46
mass CaCO₃(MW=100g/mol) :
Answer : Cr203
Explanation: