Which of the following is a nonrenewable resource: A- Hydropower, B- Biomass, C- Solar, and D- Petroleum
Answer:
D-Petroleum
Explanation:
because it takes millions of years to form petrol and it cannot be renewed again
what volume of a 0.25M solution can be prepared with 28.5g of k2s? (molar mass=110.26g)
Answer:
volume = 1.04 dm^3
Explanation:
Data:
volume = ?
Molarity, M = 0.25M
mass = 28.5g
Molar mass = 110.25g
Moles = ?
Solution:
First find number of moles,
moles = mass in gram / molar mass
= 28.5 / 110.25
= 0.258
≈ 0.26 moles
Now,
Molarity = [tex]\frac{no. of moles}{volume in dm^3}[/tex]
So,
Volume in dm^3 = [tex]\frac{no. of moles}{molarity}[/tex]
= 0.26 / 0.25
Volume = 1.04 dm^3
What is the mass of carbon monoxide (CO) gas if the gas occupies a volume of 4.1 L at 2.0 atm of pressure and -73oC?
Answer:
1.7
Explanation: