For which of the following activities might you want to hire a chemist

Before you touch an electrical switch, plug, or outlet a). Your hands must be dry b). Hands must be clean c). ask the custodian d). ask the nurse

Convert mass to moles for both reactants. 2.50g CuCl2 0.50g Al

The light produced from electrons comes from them doing what? A. falling back to a its original lower state after being excited by fire B. remaining in its lowest state even after being excited. by fire C.

A state function represent?

One mole of air at 310 k confined in a cylinder under a heavy piston occupies a volume of 4.9 l. the heat capacity of air under constant volume is 5 2 r. find the new volume of the gas if 3.9 kj is transferred to the air. answer in units of l

How many moles of lithium are in 83 grams of lithium?

Ocean constitutes most of ___ of water a) Evaporation b) Precipitation c) Condensation d) Transpiration e) Sublimation Don't choose a random letter.

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?