How many grams of Copper are required to form 250. g of Ag? (MM Cu = 63.55 g/mol; MM Ag=107.87 g/mol)

options:

295 g

842 g

74 g

148 g

At 80 K, the particles of a gas have: A) twice the average kinetic energy of the same particles at 40K. B) half the average kinetic energy of the same particles at 40K. C) one-fourth the average kinetic energy of the same particles at 20K.

0.0136 g + 2.70 * 10-4 g - 4.21 * 10-3 g = ?

The principle that under similar pressures and temperatures, equal volumes of gases contain the same number of molecules is attributed to

Which change would most likely increase the solubility of a solid in a liquid? a. decreasing the pressure on the solute b. decreasing the amount of the solute c. increasing the temperature of the solution d.

Calculate the number of grams of hcl that can react with 0.470 g of al (oh) 3.

How many atomic mass units are equal to 1.672*10-24 g of protons?

What is the name of the compound Sr3N2?

The water softener discussed here relies on precipitation softening also known as ion exchange. based o hte reactants used, what ions would remain in the softened water thaat would be consumed buy the homeowners

What would be the best technique to separate a soluble solid from a solution, like separating salt from a mixture of salt water?

What are metalloids used for