What is a converging lens

Nitrogen gas can be prepared by passing ammonia over solid copper (II) oxide according to the equation2 NH3 + 3 CuO (s) - -> N2 (g) + 3 Cu (s) + 3 H2O (g) Suppose 18.1 grams of ammonia is reacted with 90.4 grams CuO.

What will replace aluminum in a single replacement reaction A. Mn B. Zn C. K D. Ag

I don't know how to find the grams

What is the percent yield of HCl if 42.0 g of HCl are produced from the reaction of 62.0 g of PCl3

The formula of an iodate of lanthanum is la (io3) 3. what is the formula of the sulfate of lanthanum with the same oxidation number

An unknown gas has a pressure of. 0240 atm. what is the pressure in torr?

Explain why a wooden spoon is a better choice than a metal spoon for stirring a boiling pot of soup

Is MgCO3 a correct chemical formula

Water is an exaple of a mixture because it is made up of hydrogen and oxygen atoms bonded together true or false

Chlorine plus lithium bromide