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Three of the primary components of air are carbon dioxide, nitrogen, and oxygen. In a sample containin a mixture of only these gases at exactly 1 atm, the partial pressures of carbon dioxide and nitrogen are given as
P
C
O
2
=
0.285
P
CO
2
=0.285
torr and
P
N
2
=
593.525
P
N
2
=593.525
torr. What is the partial pressure of oxygen?
A gas is contained in a metal cylinder with a piston, so that the volume of the cylinder can change. If the gas initially occupies volume of 706 ml at 403 mmHg, what will be the volume if the temperature is kept constant and the pressure is changed to 255 mmHg?
If 11.3 mL of 0.110 M HCl is required to neutralize 25.00 mL of a barium hydroxide solution, what is the molarity of the barium hydroxide?
2 HCl + Ba(𝑂𝐻)_2→𝐵𝑎〖𝐶𝑙〗_2 + 2 𝐻_2 𝑂
u4) If 46.2 mL of 2.50 M NaOH is required to neutralize 25.00 mL of a phosphoric acid, H_3PO_4, solution, what is the molarity of the phosphoric acid?
3 NaOH + H_3 PO_4→ 〖Na〗_3 PO_4 + 3 H_2 O
u3) If 12.0 mL of 1.34 M NaOH is required to neutralize 25.00 mL of a sulfuric acid, H_2SO4, solution, what is the molarity of the sulfuric acid?
u 2 NaOH + H_2 SO_4 → 〖Na〗_2 SO_4+2H_2 O
If 7.3 mL of 1.25 M 𝐻𝑁𝑂_3 is required to neutralize 25.00 mL of a potassium hydroxide solution, what is the molarity of the potassium hydroxide?
𝐻𝑁𝑂_3 + KOH →KN𝑂_3 + 𝐻_2 𝑂
Calculate the heat required to vaporize 7.64 g of benzene at its normal boiling point.
Heat of vaporization (benzene) = 30.7 kJ/mol
4.5g of C⁴H¹0 butane burnt the heat evolved raises the temperature of 250g of water from 3 degree celusis to 40 degree celsuis when is the heat of combustion of C⁴H10
Mass of tissue paper
find mouler mass p4O10
