Given the chemical reaction Fe3O4 + H2 ⟶ Fe + H2O, identify the coefficient of H2O in the balanced equation.

1

2

6

4

There are two different compounds of sulfur and fluorine. In SF6, the mass of fluorine per gram of sulfur is 3.55 g F/g S. In the other compound, SFX, the mass of fluorine per gram of sulfur is 1.18 g F/g S.

What mass of O2 was used up in the reaction with an excess of SO2 gas if 14.2 g of sulfur trioxide is formed?

The amount of gas in a rigid container is tripled. What happens to the gas pressure?

One gram of liquid benzene is burned in a bomb calorimeter. The temperature before ignition was 20.826 C, and the temperature after the combustion was 25.000 C. This was an adiabatic calorimeter.

What contains most of earths water

Although nuclear energy has many applications, concerns still remain in the area (s) of: control of facilities and waste products accidental spills, leakage and theft of materials lack of safety training for employees all of these

A 0.08024 M solution of NaOH was used to titrate a solution of unknown concentration of HCl. A 32.08 mL sample of the HCl solution required 16.30 mL of NaOH solution for complete reaction. What is the molarity of the HCl solution?

Explain in terms of collision theory, how and why a reactions's rate changes as the reaction progresses

Scientific knowledge Instruction Active Comparing Science and Pseudoscience Which are examples of science rather than pseudoscience? Check all that apply.

Oxalic acid is a diprotic acid. calculate the percent of oxalic acid (h2c2o4) in a solid given that a 0.7984-g sample of that solid required 37.98 ml of 0.2283 m naoh for neutralization.