Calculate the mole fraction of total ions in an aqueous solution prepared by dissolving 0.400 moles of mgcl2 in 850.0 g of water.

If nitrogen gas is collected over water at 20 o C and the total pressure of the gas in the collection vessel is 200 kPa, what is the pressure of dry nitrogen gas?

A gas has a volume of 2.60 liters at a temperature of 87 degrees Celsius and pressure of 1.30 atm. What is the volume of gas, at a temperature of 367 degrees celcis and a pressure off 4.70atm

Which temperature conversion is correct? A. °C = K - 273 B. K = 273 (°C) C. K = °C - 273 D. °C = K + 273

What is a short cut to balancing equations

Which term represents the sum of the atomic masses of the atom in a molecule?

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Nonrenewable resources are?