Find the empirical formula of a compound that contains 42g of nitrogen and 9g of hydrogen.

What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF, (gram-formula mass = 26 grams/mole) ? (1) 1.3 M (3) 3.0 M (2) 2.0 M (4) 0.75 M

List the two main kinds of changes that you can observe when chemical reactions occur.

Water flows at the rate of 0.5 kg/s in a 2.5-cm-diameter tube having a length of 4 m. A constant heat flux is imposed at the tube wall so that the tube wall temperature is always 50°C higher than the water temperature.

How many joules of heat energy are released when 50.0g of water are cooled from 70.0C to 60.0C

What process puts water vapor into the atmosphere?

Why isn't air travel based on hydrogen popular today? A. Hydrogen is very expensive B. Hydrogen is difficult to find C. Hydrogen is flammable and dangerous D. Hydrogen is too cold for travelers to stand on long trips

How to get 1m solution to 0.001m solution?

If something is in high resolution you can see and object but not very clearly. True or False.

Which change might cause a cold spell in the northern united states

Kipps appratus is for what?