I have a chemistry lab and quiz this week, I really need an exp.docx - I have a chemistry lab and quiz this week I really need an expert person who can

I have a chemistry lab and quiz this week, I really need an exp.docx

This preview shows page 1 - 13 out of 42 pages.

Image of page 1
I have a chemistry lab and quiz this week, I really need an expert person who can do both A++ If you not expert, don't waste your and mine time lab_4.docx Question 14 pts Upload a picture of your Sodium Carbonate on the scale with the mass shown. This should be the stoichiometric mass needed. Upload
Image of page 2
Choose a File Question 210 pts Upload a picture of your hand written calculations for this lab clearly showing the mass of sodium carbonate needed, the theoretical yield expected, and the percent yield obtained. Upload Choose a File Question 310 pts Use the conservation of mass and the balanced chemical equation to explain how much of each product should have been produced.
Image of page 3
Question 42 pts A student runs the reaction: LiOH + CO2 → LiHCO3. The reaction consumes 45.0 g LiOH and produces 72.8 g of LiHCO3. Which of the statements concerning this reaction is true? The actual yield of the product is 72.8 g LiHCO3. The theoretical yield of the product is 72.8 g LiHCO3. The theoretical yield of the product is 117.8 g LiHCO3. The percent yield of the reaction is 61.8%.
Image of page 4
Question 52 pts Balance the following equation using the smallest set of whole numbers, then add together the coefficients. Don't forget to count coefficients of one. The sum of the coefficients is ___ CH4 + ___ Cl2 → ___ CCl4 + ___ HCl 4 6 8 10
Image of page 5
12 Question 62 pts Calculate the mass of FeS formed when 9.42 g of Fe reacts with 8.50 g of S. Fe( s ) + S( s ) → FeS( s )
Image of page 6
17.9 g 87.9 g 26.0 g 14.8 g 1.91 × 10–3 g Question 72 pts Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass
Image of page 7
% H, and 66.63 mass % O. Determine its empirical formula. HNO H2NO2 HN6O16 HN16O7 H2NO3 Question 82 pts
Image of page 8
Suppose the theoretical yield in a reaction is 10.5 g and the percent yield is 75.5%. What is the actual yield of product obtained? 793 g 7.93 g 13.9 g 0.139 g Question 93 pts What is the limiting reactant when 13.9 g of oxygen react
Image of page 9
with 33.7 g of calcium to produce calcium oxide and how many grams of calcium oxide are produced? Calcium is the limiting reactant and 47.1 g of calcium oxide are produced. Oxygen is the limiting reactant and 24.4 g of calcium oxide are produced. Calcium is the limiting reactant and 47.1 g of calcium dioxide are produced. Question 103 pts What is the limiting reactant when 31.3 g of manganese (II)
Image of page 10
chloride, 48.3 g of chlorine, and 25.7 g of water react to produce manganese (IV) oxide and how much hydrochloric acid is produced? Manganese (II) chloride is the limiting reactant and 8.40 g of hydrochloric acid is produced. Chlorine is the limiting reactant and 6.21 g of hydrochloric acid is produced. Chlorine is the limiting reactant and 24.8 g of hydrochloric acid is produced. Manganese (II) chloride is the limiting reactant and 36.3 g of hydrochloric acid is produced.
Image of page 11
Water is the limiting reactant and 52 g of hydrochloric acid is produced. quiz_4.docx Chemical Equations A chemical equation is a recipe or equation for a chemical reaction. (remember a chemical reaction has reactants – starting material- that are rearranged to form one or more products). The number of each element on the reactant and the product side must be equal. This is the Law of Conservation of Matter . Since the number of each element must be the same on
Image of page 12
Image of page 13

You've reached the end of your free preview.

Want to read all 42 pages?

  • Fall '16
  • Christopher L. Litten, MA, Ph.D.

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors