Answer:
Density is a word we use to describe how much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its mass). Another way to put it is that density is the amount of mass per unit of volume. If an object is heavy and compact, it has a high density.
Explanation:
Answer:
1.25 M
Explanation:
Step 1: Given data
Mass of KI (solute): 20.68 g
Volume of the solution: 100 mL (0.100 L)
Step 2: Calculate the moles of solute
The molar mass of KI is 166.00 g/mol.
20.68 g × 1 mol/166.00 g = 0.1246 mol
Step 3: Calculate the molar concentration of KI
Molarity is equal to the moles of solute divided by the liters of solution.
M = 0.1246 mol/0.100 L= 1.25 M
Answer:
7.19 g of Fe2O3 will produce 0.092 mole of iron
Explanation:
One mole of Fe2O3 reacts with 2 mole of Aluminum to produce one mole of Al2O3 and 2 mole of iron.
Mass of one mole of Fe2O3 = 159.69 g/mol
Thus, 159.69 g/mol of Fe2O3 produces two mole of Fe
7.19 g of Fe2O3 will produce
moles of iron
<h2><em>multiple </em><em>choice</em></h2>
- <em><u>A</u></em>
- <em><u>A</u></em>
- <em><u>B</u></em>
- <em><u>A</u></em>
- <em><u>C</u></em>
- <em><u>D </u></em><em><u>(</u></em><em><u> </u></em><em><u>I'm </u></em><em><u>not </u></em><em><u>sure</u></em><em><u>)</u></em>
- <em><u>A</u></em>
<em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em>
