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

What is the name for the process by which gases spontaneously move from an area of higher concentration to one of lower concentration

How to know if something is actually white gold?

A magnesium ion has a charge of + 2 and an oxygen ion has a charge of - 2. What is the chemical formula of the compound made of these ions?

Would the molecules of polar covalent bonds mix better with sugar or oil? Would the molecules of polar covalent bonds mix better with salts or oil? Explain.

Bio Why are the laws of thermodynamics considered laws of nature and not scientific theories?

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Effect of ph on conformation of aplha helix

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with