Answer:
Chemical energy
Explanation:
When the body eats food our bodies convert the stored energy (calories) to chemical energy, allowing us to function.
Density is defined as Mass per unit volume of an object ~
And hence, the correct choice is ~ 1
Answer:
THE MASS OF NITROGEN GAS IN THIS CONDITIONS IS 0.0589 g
Explanation:
In an ideal condition
PV = nRT or PV = MRT/ MM where:
M = mass = unknown
MM =molar mass = 28 g/mol
P = pressure = 2 atm
V = volume = 25 mL = 0.025 L
R = gas constant = 0.082 L atm/mol K
T = temperature = 290 K
n = number of moles
The gas in the question is nitrogen gas
Molar mass of nitrogen gas = 14 * 2 = 28 g/mol
Then equating the variables and solving for M, we have
M = PV MM/ RT
M = 2 * 0.025 * 28 / 0.082 * 290
M = 1.4 / 23.78
M = 0.0589 g
The mass of the nitrogen gas at ideal conditions of 2 atm, 25 mL volume and 290 K temperature is 0.0589 g
44g of CO2 can produce by the reaction of carbon with oxygen
Use PV=nRT to find V assuming n is one and R= 8.31 then use the answer to find P2
