If a fossil sample originally contained 5 grams of carbon-14 and the half-life of carbon-14 is 5,700 years. After 11,400 years how many grams of carbon-14 would remain

Determine the ph of a 0.22 m naf solution at 25°c. the ka of hf is 3.5 * 10-5.

How are actual yield and theoretical yield determined?

Match the effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been established in this system (N. C. = no change). 2SO2 (g) + O2 (g) 2SO3 (g) + 46.

3.0 L of a gas is at a temperature of 78 degrees Celsius. Find the volume of the gas at standard temperature

When temperature increases, what happens to the molecules in a chemical reaction?

Molybdenum has a molar mass of 95.94g/mol. How many molecules of molybdenum are in 150.0 g of molybdenum

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration