Heat Treatment

Posts Tagged ‘gas’

You will learn how to soften brass by heating it up with a gas torch. You will also learn how to join brass by silver soldering

1- If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated.
Mg3N2(s) + 3 H2O(l) 3 MgO(s) + 2 NH3(g)

If 14.1 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 21°C and 731 mm Hg?

2- During the making of steel, iron(II) oxide is reduced to metallic iron by treatment with carbon monoxide gas.
FeO(s) + CO(g) Fe(s) + CO2(g)
Suppose 1.60 kg of FeO reacts. What volume of CO(g) is required, and what volume of CO2(g) is produced, each measured at STP?

thank you sooooo much!

During the making of steel, iron(II) oxide is reduced to metallic iron by treatment with carbon monoxide gas.
FeO(s) + CO(g) Fe(s) + CO2(g)
Suppose 1.53 kg of FeO reacts. What volume of CO(g) is required, and what volume of CO2(g) is produced, each measured at STP?

If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated.
Mg3N2(s) + 3 H2O(l) 3 MgO(s) + 2 NH3(g)
If 12.9 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 21°C and 747 mm Hg?

Suppose that 1.37 g of neon gas and 2.50 g of argon gas are confined in a 9.92 L container at 27°C. What would be the pressure in the container?

The label on an aerosol spray can contains a warning that the can should not be heated to over 130°F because of the danger of explosion due to the pressure increase as it is heated. Calculate the potential volume of the gas contained in a 503 mL aerosol can when it is heated from 25°C to 54°C (approximately 130°F), assuming a constant pressure.

What pressure would be needed to compress 26.3 mL of hydrogen at 1.14 atm to 25% of its original volume?

A 1.15 L sample of gas at 759 mm Hg pressure is expanded until its volume is 2.29 L. What will be the pressure in the expanded gas sample (at constant temperature)?

Carbon dioxide gas, in the dry state, may be produced by heating calcium carbonate.
CaCO3(s) CaO(s) + CO2(g)
What volume of CO2, collected dry at 55°C and a pressure of 759 torr, is produced by complete thermal decomposition of 11.7 g of CaCO3?

How many grams of carbon dioxide are contained in 1.170 L of the gas, at 25°C and 101.325 kPa?
g
What is the density of the gas at these conditions?
g/L
What would the density of oxygen be at these conditions?
g/L

During the making of steel, iron(II) oxide is reduced to metallic iron by treatment with carbon monoxide gas.
FeO(s) + CO(g) Fe(s) + CO2(g)
Suppose 1.53 kg of FeO reacts. What volume of CO(g) is required, and what volume of CO2(g) is produced, each measured at STP?

If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated.
Mg3N2(s) + 3 H2O(l) 3 MgO(s) + 2 NH3(g)
If 12.9 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 21°C and 747 mm Hg?

Suppose that 1.37 g of neon gas and 2.50 g of argon gas are confined in a 9.92 L container at 27°C. What would be the pressure in the container?

The label on an aerosol spray can contains a warning that the can should not be heated to over 130°F because of the danger of explosion due to the pressure increase as it is heated. Calculate the potential volume of the gas contained in a 503 mL aerosol can when it is heated from 25°C to 54°C (approximately 130°F), assuming a constant pressure.

What pressure would be needed to compress 26.3 mL of hydrogen at 1.14 atm to 25% of its original volume?

A 1.15 L sample of gas at 759 mm Hg pressure is expanded until its volume is 2.29 L. What will be the pressure in the expanded gas sample (at constant temperature)?

Carbon dioxide gas, in the dry state, may be produced by heating calcium carbonate.
CaCO3(s) CaO(s) + CO2(g)
What volume of CO2, collected dry at 55°C and a pressure of 759 torr, is produced by complete thermal decomposition of 11.7 g of CaCO3?

If 12.8 g of liquid helium at 1.7 K is completely vaporized, what volume does the helium occupy at STP?

How many grams of carbon dioxide are contained in 1.170 L of the gas, at 25°C and 101.325 kPa?
g
What is the density of the gas at these conditions?
g/L
What would the density of oxygen be at these conditions?
g/L

You will learn how to soften brass by heating it up with a gas torch. You will also learn how to join brass by silver soldering

The steel gas nitrided, and we now want to machine the steel block, but we can’t because it is so hard. If any body has any ideas, let me know. Keep in mind that I can’t heat it up because it will effect the heat treatment of the block.