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There are more atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. Question...
There are more atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. Question 22 4 pts are there in 1.00 mole of the compound 22. How many moles of each type of atom Cas(PO4)22 Ca-3.00, P-1.00, 0 -4.00 Ca-3.00, P-2.00, 0-4.00 Ca = 3.00, P-1.00, 0 - 8.00 Ca-3.00, P-2.00, 0 - 8.00 Question 23 23. To the closest whole number, what is the molar mass of bromine liquid Brafi.e. the mass In grams of 1.00 mole...
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH.(kJ/mole) -318 kJ/mole (a) U...
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH.(kJ/mole) -318 kJ/mole (a) Using this information along with data in the appendix of your textbook, calculate AH;(OF,(8)) in kJ/mole at 25°C. (b) If 15.0 g of OF2(g) and 10.0 g of H2Og) react, how much heat, expressed in kJ is released? Hint: First calculate the limiting reagent. 6.(20 pts) Consider two Styrofoam coffee cups. If cup #1 contains 102.0 mL of water at 81.8°C...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 18.92 g of the compound yields 27.73 g of CO2 and...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 18.92 g of the compound yields 27.73 g of CO2 and 11.35 g of H2O. The molar mass of the compound is 90.078 g/mol. *Each part of this problem should be submitted separately to avoid losing your work* 1. Calculate the grams of carbon (C) in 18.92 g of the compound: grams 2. Calculate the grams of hydrogen (H) in 18.92 g of the compound. grams 3. Calculate the grams...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H,0) has 10 electrons. (a) How many electrons are there in 6.47 liters of water? (1 liter is equivalent to 1.00 x 110 m3) (b) What is the net charge of all these electrons? (a) Number Units (b) Number Units Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H,0) has 10 electrons. (a) How...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. (a) How many electrons are there in 8.88 liters of water? (1 liter is equivalent to 1.00 × 10-s m") (b) What is the net charge of all these electrons? (a) Number (b) Number Click if you would like to Show Work for this question: Units Units Open Show Work
Started: Jan 20 at 10:30pm Quiz Instructions You have one minute per question. Question2 4 pts...
Started: Jan 20 at 10:30pm Quiz Instructions You have one minute per question. Question2 4 pts The term hidradenitis is defined as C inflammation of a sweat gland. C an abnormal condition of a hidden nail. inflammation of the skin. C a diseased state of a gland. Next Not saved Submit Quiz Questions
Question 15 5 pts Strontium 90 decays at a constant rate of 2.44% per year. Therefore,...
Question 15 5 pts Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is A = Ao e-0.0244t. How long will it take for 25 grams of strontium to decay to 10 grams? 37.5 years 375 years 60 years 45 years.
U Question 30 5 pts If 4.8 g of sulfur react with an excess amount of...
U Question 30 5 pts If 4.8 g of sulfur react with an excess amount of fluorine according to the equation, what mass of the product is formed when the reaction is complete? 1 mole SF6 - 146.05 g S + 3F2-SF o 228 O 9.0 g 328 O 158 D Question 29 5 pts If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the...
Unknown C313 L00 J000 500 3000 4000 RVENUNER 678 77 629 77 109e 66 77 2971...
Unknown C313 L00 J000 500 3000 4000 RVENUNER 678 77 629 77 109e 66 77 2971 16 20 1461 1415 38 26 1050 2940 2800 26e1 74 41 S3 492 66 24 1384 1341 66 1285 27 55 1044 37 886 44 2668 44 780 57 72 712 4 1235 32 762 1222 26 467 39 Unknown C313 200 180 160 140 120 100 80 60 40 20 ppm 100 Unknown C313 80- 60 40 20 0 tT 10 30...
We were unable to transcribe this imageThis Quiz: 9 pts Question Hel The accompanying frequency polygon...
We were unable to transcribe this imageThis Quiz: 9 pts Question Hel The accompanying frequency polygon represents the number of a country's residents below 100 years of age. Complete parts (a) through (1) below. la Click the icon to view the frequency polygon. (d) Which age group has the highest population? 3039 10-19 90_99 40-49 (e) Which age group has the lowest population? 80-89 90-99 0-9 ОО 30 39 (1) Which age group has 39 million? O 50-59 : More...
There are more atoms in 1.00 mole of magnesium than in 1.00 mole of carbon. Question 22 4 pts are there in 1.00 mole of the compound 22. How many moles of each type of atom Cas(PO4)22 Ca-3.00, P-1.00, 0 -4.00 Ca-3.00, P-2.00, 0-4.00 Ca = 3.00, P-1.00, 0 - 8.00 Ca-3.00, P-2.00, 0 - 8.00 Question 23 23. To the closest whole number, what is the molar mass of bromine liquid Brafi.e. the mass In grams of 1.00 mole...
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH.(kJ/mole) -318 kJ/mole (a) Using this information along with data in the appendix of your textbook, calculate AH;(OF,(8)) in kJ/mole at 25°C. (b) If 15.0 g of OF2(g) and 10.0 g of H2Og) react, how much heat, expressed in kJ is released? Hint: First calculate the limiting reagent. 6.(20 pts) Consider two Styrofoam coffee cups. If cup #1 contains 102.0 mL of water at 81.8°C...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H,0) has 10 electrons. (a) How many electrons are there in 6.47 liters of water? (1 liter is equivalent to 1.00 x 110 m3) (b) What is the net charge of all these electrons? (a) Number Units (b) Number Units Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H,0) has 10 electrons. (a) How...
Chapter 18, Problem 07 Water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. (a) How many electrons are there in 8.88 liters of water? (1 liter is equivalent to 1.00 × 10-s m") (b) What is the net charge of all these electrons? (a) Number (b) Number Click if you would like to Show Work for this question: Units Units Open Show Work
Started: Jan 20 at 10:30pm Quiz Instructions You have one minute per question. Question2 4 pts The term hidradenitis is defined as C inflammation of a sweat gland. C an abnormal condition of a hidden nail. inflammation of the skin. C a diseased state of a gland. Next Not saved Submit Quiz Questions
Question 15 5 pts Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is A = Ao e-0.0244t. How long will it take for 25 grams of strontium to decay to 10 grams? 37.5 years 375 years 60 years 45 years.
U Question 30 5 pts If 4.8 g of sulfur react with an excess amount of fluorine according to the equation, what mass of the product is formed when the reaction is complete? 1 mole SF6 - 146.05 g S + 3F2-SF o 228 O 9.0 g 328 O 158 D Question 29 5 pts If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the...
Unknown C313 L00 J000 500 3000 4000 RVENUNER 678 77 629 77 109e 66 77 2971 16 20 1461 1415 38 26 1050 2940 2800 26e1 74 41 S3 492 66 24 1384 1341 66 1285 27 55 1044 37 886 44 2668 44 780 57 72 712 4 1235 32 762 1222 26 467 39 Unknown C313 200 180 160 140 120 100 80 60 40 20 ppm 100 Unknown C313 80- 60 40 20 0 tT 10 30...
We were unable to transcribe this imageThis Quiz: 9 pts Question Hel The accompanying frequency polygon represents the number of a country's residents below 100 years of age. Complete parts (a) through (1) below. la Click the icon to view the frequency polygon. (d) Which age group has the highest population? 3039 10-19 90_99 40-49 (e) Which age group has the lowest population? 80-89 90-99 0-9 ОО 30 39 (1) Which age group has 39 million? O 50-59 : More...
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