Answer:
747.5 mL
Explanation:
Assuming ideal behaviour, we can solve this problem by using <em>Boyle's law</em>, which states that at constant temperature:
Where in this case:
We <u>input the data given by the problem</u>:
- 681 mm Hg * V₁ = 991 mm Hg * 513.7 mL
And <u>solve for V₁</u>:
There is 3800 mmHg in 5 atm
Answer:
Explanation:
1. Mass of zinc
The density of zinc is 7.14 g/cm³
D = m/V
2. Volume of aluminium
The density of aluminium is 2.60/cm³.
Answer:
12
Explanation:
You will need a chemical equation with masses and molar masses, so let’s gather all the information in one place.
: 258.21 18.02
KAl(SO₄)₂·xH₂O ⟶ KAl(SO₄)₂ + xH₂O
Mass/g: 4.74 2.16
Step 1. Calculate the mass of the KAl(SO₄)₂.
Mass = 4.74 g – 2.16 g = 2.58 g.
Step 2. Calculate the moles of each product.
Step 3. Calculate the molar ratio of the two products.
1 mol of KAl(SO₄)₂ combines with 12 mol H₂O, so x = 12.