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Molar concentration

Chemistry 101 exam 3 key

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Butane
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Bond-dissociation energy

Chemistry 101 - Exam II Name ______________________ 11 April 2018 Show all work for credit. State any assumptions made to solve a problem. Give all numerical answers with the correct number of significant figures. All answers in scientific notation must be in correct scientific notation (i.e., 6.022?1023 not 6.022E23 or 6.022e23). All instances of incorrect scientific notation will result in the loss of 3 points each. All numbers that require units should have the units written. All instances of numbers without units will result in the loss of 3 points each. 1. (32 points) Textbook Problem 7.107 ? Some of the butane, C4H10?, in a 200.0 L cylinder at 26.0 ?C is withdrawn and burned at a constant pressure in an excess of air. As a result, the

Chemistry 101 exam 2 key

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Enthalpy
Standard enthalpy of formation
Butane
Molar concentration
Bond-dissociation energy
Carbon monoxide

Chemistry 101 - Exam II Name ______________________ 26 October 2016 Show all work for credit. State any assumptions made to solve a problem. Give all numerical answers with the correct number of significant figures. All answers in scientific notation must be in correct scientific notation (i.e., 6.022?1023 not 6.022E23 or 6.022e23). All instances of incorrect scientific notation will result in the loss of 3 points each. All numbers that require units should have the units written. All instances of numbers without units will result in the loss of 3 points each. 1. (26 points) Cetane, C16H34, is a typical petrodiesel with a standard enthalpy of combustion of ?10 699.1 kJ mol?1. Methyl linoleate, C19H34O2, is a biodiesel with a standard enthalpy of

molarity and dilution

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Molar concentration
Mole
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Molarity Worksheet 1. Sea water contains roughly 28.0 g of NaCl per liter. What is the molarity of sodium chloride in sea water? 2. What is the molarity of 245.0 g of H2SO4 dissolved in 1.00 L of solution? 3. What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution? 4. What is the molarity of 5.00 g of NaOH in 750.0 mL of solution? 5. How many moles of Na2CO3 are there in 10.0 L of 2.0 M soluton? 6. How many moles of Na2CO3 are in 10.0 mL of a 2.0 M solution? 7. How many moles of NaCl are contained in 100.0 mL of a 0.20 M solution? 8. What weight (in grams) of NaCl would be contained in problem 7? 9. What weight (in grams) of H2SO4 would be needed to make 750.0 mL of 2.00 M solution? 10. What volume (in mL) of 18.0 M H2SO4 is needed to contain 2.45 g H2SO4?
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