Answer the following questions. Show the answers on the screen provided. After uploading your exam, take the pictures of your work and upload them to Exam 3 Solutions, Extra Credit, and Partial Credit assignment. Your work must reflect the answer provided here. NO CREDIT will be awarded for the answer without work or justification shown. Balance the following equation and answer the questions below. Show your work for the full credit.   ____NH3 (g)  + ____O2 (g) =>_____NO2 (g) +____ H2O (l)    (3) How many moles of water will form if 12.0 moles of NH3 is burned? (4)  If 25.0 moles of oxygen are used, how many grams of water will form?(4) How many molecules are in 4.50 grams of NH3? (2) What is the molarity of a solution prepared by dissolving 4.50g of NH3 in 125mL of the solution? (3) How many moles of oxygen are needed to burn 1.2044 x1024 molecules of NH3?(1)  Which reagent is a limiting reagent and how many moles of NO2 form when 25.0 mol NH3 react with 30.0 mol of O2?(5)  Which reagent is a limiting reagent (2) and what is the theoretical yield in grams o NO2 (3) when 20.0 g NH3 react with 20.0 g of O2?If  9.0 g of NO2 formed in reaction 8, what are the  actual, and percent yields of NO2(1)

What is the stoichiometric factor for the product to product in the reaction below? 3Sr(NO3)2 + 2Cs3PO4 → 6CsNO3 + Sr3(PO4)2   

What is the balanced molecular equation for the reaction between the solutions of CrCl3 and sodium hydroxide?

What is the net ionic equation for a reaction between a weak acid and strong base.  

Check the activity series of metals near your periodic table and determine, which one of the reactions will not take place?             

The only empirical formula is:

What is the coefficient in front of Sr(NO3)2 if the reaction is balanced? ___K3PO4 + ___Sr(NO3)2 → ___KNO3 + ___Sr3(PO4)2

A bacteriophage forms a prophage during the lytic cycle. 

Which of the following is NOT found in a molecule of DNA.

HIV is an example of a virus that forms a “provirus”.