What is 780 K in degrees Celsius?

What is the atomic number for boron?

Using the rules of significant figures, what is the correct answer for the following mathematical equation? 32.6 + 12.5897 = 

Using the reaction below, how many moles of KI is needed to fully react with 6.57 x 10-4 moles of lead(II) nitrate? Pb(NO3)2  +  2 KI  

Which of the following is hydrochloric acid?

What is 56

An unknown substance has a density of 1.342 g/mL.  What mass would a 15.05 mL sample have?

What is the atomic mass of chlorine?

How many lead atoms are in 1.689 moles of lead?

Answer the questions for the following reaction of 0.985 g NH3 with 2.780 g of Cl2 in the text box below.  Make sure to number your answers and to include units.   4 NH3  +  3 Cl2  →  3 NH4Cl + NCl3  What is the limiting reactant? What is the excess reactant? What is the theoretical yield (in grams) of ammonium chloride? How much of the excess reactant is consumed by the reaction? How much of the excess reactant is not consumed by the reaction? If the actual yield is 1.985 g NH4Cl , what is the % yield of ammonium chloride?