Balance the following equations:

__CuS2 + HNO3 →

__Cu (NO3) 2 + __H2SO4 +

__N2O + ___H20

Which of the following reactions obeys the Law of Conservation of Atoms? H2O → H2 + O2 CuSO4 + Zn → ZnCl2 + Cu Zn + HCl → ZnCl2 + H2 PbCl2 + Al → AlCl3 + Pb Zn + 2HCl → H2 + ZnCl2

The standard reaction free energy = δg0-311. kj for this reaction: p4 (s) + 20hf (g) → 4pf5 (g) + 10h2 (g) use this information to complete the table below. round each of your answers to the nearest kj.

If you have 15 grams of water, how many molecules of water do you have?

Number of sides in a right angle polygon

Substances that react with metals to produce hydrogen gas are called

What is hyphen notation

The density of aluminum is 2.70g/cm^3. a piece of aluminum foil has a volume of 54.0 cm^3. what is the mass of this piece of aluminum foil?

Describe how the atoms in Calcium Chloride obey the octet rule.

How many milliliters of 2.55M NaOH is needed to make 125mL of 0.75M NaOH solution?

2. What type of bond holds together nitrogen atoms? a. Single Bond b. Double Bond c. Triple Bond d. no bonds hold nitrogen together