General Chemistry Answers

If I have an unknown quantity of gas at a pressure of 1.8 atm, a volume of 110 liters, and a temperature of 87 C, how many moles of gas do I have?

 1.   How many formula units of sodium nitrate will react with 20.0 g of calcium carbonate to product sodium carbonate and calcium nitrate according to the following reaction?    

2 Na(NO₃) + Ca(CO₃) à Na₂(CO₃) + Ca(NO₃)₂

how many miles of tin (II) fluoride is there in 908 grams of tin (II) flouride

what is the mass of chlorine molecules (Cl₂) that contains twice as many molecules as found in 3.6g of water?

a gas jar contains 240cm³ of carbon dioxide gas. calculate :

a) number of moles of carbon dioxide gas

b) number of molecules of carbon dioxide gas

c) mass of carbon dioxide gas

calculate the number of atoms in the following substances.

i) 13 g of zinc, Zn

ii) 5.6 g of nitrogen gas, N2

iii) 8.5g or ammonia gas, NH3

iv) 14.2 g of chlorine gas,Cl2

A Sample of water under study was found to boil at 102°C at normal atmospheric pressure is the water pure, will this water freeze at 0°C. comment.

In basic solution, hypochlorite ions, oxidize chromite ions, to chromate ions, and are reduced to chloride ions. Write the balanced net ionic equation for this reaction.

"Our energy supply is running out." true or false and why?

Consider the following reaction in a container with a movable position:

A(l) + B(l) = C(g)

The ΔE for this reaction is 760 J. As the position moves up, the system absorbs 839 J of heat from it's surroundings.

1) Is work done on this system?

2) How much work?