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1. You have 200 grams of Carbon and 200 grams of Zinc. (a) Which contains larger...
You have 10.0 g each of sodium, iron, silver, zinc and neon. Which contains the smallest number of moles?
convert .0345 mol zinc nitrate to grams
2. A compound made from carbon and hydro contains 2.85g hydrogen, calculate the ma: 3. Convert the following: a) 3.45 x 102 mol zinc nitrate = ? g. I'mol = MMg b) 8.3 x 1024 molecules dinitrogen tetrah- 4 Nz Hy I mol = 6.022x 10² c) 2.250 lb iron(III) oxide = 2 mol
Assume you have 150 grams of C4H8O How many…. Moles of Carbon do you have? Moles of Oxygen do you have? Moles of H2O could you make? Grams of H2O could you make? Grams of H would you need to have react?
A sample of glucose, C6H12O6, contains 1.270×1021 carbon atoms. 1.How many atoms of hydrogen does it contain? 2.How many molecules of glucose does it contain? 3.How many moles of glucose does it contain? 4.What is the mass of this sample in grams?
What is the mass, in grams, of 1.30 molmol of water, H2OH2O?
Learning Goal: Be able to convert to mass from a given number of moles. Completing problems such as this is critical for ensuring your success in chemistry. If you would like to get a head start (and we strongly suggest you do if you want to do well in the course) we have provided you with help to learn this concept in the hints. Hints for this problem...
A sample of glucose, C6H12O6, contains 1.280×1021 carbon atoms. Part 1: How many atoms of hydrogen does it contain? Part 2: How many molecules of glucose does it contain? Part3: How many moles of glucose does it contain? Part 4: What is the mass of this sample in grams?
1. The molecule carbon dioxide has the molecular formula CO2. a. How many carbon and oxygen atoms does each carbon dioxide molecule contain? b. Find the average mass of one carbon dioxide molecule in amu. Show how you reached your answer. C. How many moles of carbon atoms are there in 1 mole of carbon dioxide? d. How many moles of oxygen atoms are there in 1 mole of carbon dioxide? e. Find the mass of one mole of carbon...
1. An ancient club is found that contains 200 g
of pure carbon and has an activity of 7.5 decays per second.
Determine its age assuming that in living trees the ratio of
(14C12C)(14C12C) atoms is about 1.30×10−121.30×10−12. Note that the
half life of carbon-14 is 5700 years and the Avogadro number is
6.02×10236.02×1023.
6. Indicate whether each of the following statements is true or false, and explain your reasoning? a. One mole of NH; weighs more than one mole of H2O. b. There are more carbon atoms in 40 grams of CO2 than in 12 grams of diamond (a form of pure carbon). c. There are equal numbers of nitrogen atoms in one mole of NH3 and one mole of N2. d. The number of Cu atoms in 100 grams of Cu(s) is...
Determine the mass of zinc sulphide, ZnS, which are produced when 6.2 g of zinc and 4.5g of sulphur are reacted. (7 marks) 3. 4. What is the percent yield for a reaction if you predicted the formation of 21grams of Ce12 and actually recovered only 3.8 grams? (4 marks) 2. Determine the number of atoms in 467g of sulphuric acid, H2S04. (6 marks) 3. a) The percentage composition of acetic acid is found to be 39.9% carbon, 6.7% hydrogen,...