85 points asap
1. how many molecules are in 7.5 grams of oxygen gas?
2. 2...
Chemistry, 07.10.2019 01:50 iselloutt4fun
85 points asap
1. how many molecules are in 7.5 grams of oxygen gas?
2. 2hgo(s) --> 2hg(l) + o2 (g)
in a certain reaction 4.37 of hgo is decomposed, producing 2.5 of hg
what is the percent yield for the reaction?
3. 4 fe(s) + 3o2(g) --> 2fe2o3(g)
in a certain reaction, 27.3 g of iron is reacted with 79.9 g of oxygen
how many grams of the excess reactant remain after the reaction is complete?
4. how many moles are in 10.25 grams of nh3?
5. what is the empirical formula mass (efm) of p2o5?
6. how many molecules are in 1.84 moles of water?
7. 4 fe(s) + 3o2(g) --> 2fe2o3(g)
in certain reaction, 27.3 g of iron is reacted with 45.8 g of oxygen.
what is the limiting reactant?
8. how many moles are in 2.62 x 1023 molecules of c6h14?
9. fe2o3(s)+3co(g)⟶2fe(s)+3co2(g)
how many moles of co are required to completely react with 1.225 moles of fe2o3?
10. how many moles are there in 1.3 x 1024 atoms of barium?
11. how many carbon atoms are present in 0.52 moles of c2h6o?
12. a compound has a chemical composition of 51% carbon, 9.3% hydrogen, and 39.2% oxygen. what is the empirical formula?
Answers: 2
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The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)
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Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c.vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false
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Which of the following is not a characteristic of s waves?
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