Questions from General Chemistry

Q: The “Chemistry in Focus” segment The Chemistry of Air Bags

The “Chemistry in Focus” segment The Chemistry of Air Bags discusses how the decomposition of sodium azide inflates the air bag. Use the balanced chemical equation in the segment to determine the mass...

Q: The “Chemistry in Focus” segment Breath Fingerprinting discusses using breath

The “Chemistry in Focus” segment Breath Fingerprinting discusses using breath analysis to diagnose diseases. The volume of the average human breath is approximately 500 mL, and carbon dioxide (CO2) ma...

Q: Which of the following molecules contain polar covalent bonds? a

Which of the following molecules contain polar covalent bonds? a. water, H2O b. carbon monoxide, CO c. fluorine, F2 d. nitrogen, N2

Q: Complete the following table for an ideal gas. /

Complete the following table for an ideal gas.

Q: A glass vessel contains 28 g of nitrogen gas. Assuming ideal

A glass vessel contains 28 g of nitrogen gas. Assuming ideal behavior, which of the processes listed below would double the pressure exerted on the walls of the vessel? a. Adding 28 g of oxygen gas...

Q: A steel cylinder contains 150.0 moles of argon gas at

A steel cylinder contains 150.0 moles of argon gas at a temperature of 25 °C and a pressure of 8.93 MPa. After some argon has been used, the pressure is 2.00 MPa at a temperature of 19 °C. What mass o...

Q: A certain flexible weather balloon contains helium gas at a volume of

A certain flexible weather balloon contains helium gas at a volume of 855 L. Initially, the balloon is at sea level where the temperature is 25 °C and the barometric pressure is 730 torr. The balloon...

Q: A large flask with a volume of 936 mL is evacuated and

A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then filled to a pressure of 0.967 atm at 31 °C with a gas of unknown molar mass and then reweighed to gi...

Q: A 20.0-L nickel container was charged with 0

A 20.0-L nickel container was charged with 0.859 atm of xenon gas and 1.37 atm of fluorine gas at 400 °C. The xenon and fluorine react to form xenon tetrafluoride. What mass of xenon tetrafluoride can...

Q: Consider the unbalanced chemical equation: CaSiO3(s) +

Consider the unbalanced chemical equation: CaSiO3(s) + HF(g) / CaF2(aq) + SiF4(g) + H2O(l) Suppose a 32.9-g sample of CaSiO3 is reacted with 31.8 L of HF at 27.0 °C and 1.00 atm. Assuming the reactio...