How many moles of hydrogen are in 50.0 l of hydrogen gas at stp? 1.39 moles 2.23 moles 0.985 moles 2.74 moles 4.56 moles?

Predict the products for this reaction CuO + NaNO3 A. Cu (NO3) 2 + Na2O B. CuO4 + NaN C. No reaction D. CuNO3 + NaO

An ionic bond is the attraction between a. similarly charged ions. b. oppositely charged ions. c. neutral ions. d. neutral atoms. An ionic bond is the attraction between oppositely charged ions.

Calculate the work in kilojoules done during a synthesis of ammonia in which the volume contracts from 7.4 l to 4.5 l at a constant external pressure of 44 atm. express your answer using two significant figures.

In which phase are the molecules moving faster? Is it water?

A pot contains 7 l of brine at a concentration of 80 g/l. how much of the water should be boiled off to increase the concentration to 200 g/l?

Which element would most likely have chemical properties similar to that of fluorine (F) ?

Percentage compostion of carbon in CaCO3

Potassium iodide (ki) exhibits predominantly ionic bonding. the k and i ions have electron structures that are identical to which two inert gases?

Amino acid to protein as?

How many moles of metallic aluminum (al) could be produced from al3 + at a current of 0.09 amperes for 964,853 seconds?