Chemistry

Chemistry, 17.07.2019 13:30, loulou6166

Me how many molecules are in 7.5 grams of oxygen gas?

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Mathematics, 08.07.2019 22:10, alyssagonzales2021

100 rules: have to answer correctly have to answer all 16 questions only answer if you only know the answer partial answers or incomplete answers not accepted will be reported point stealers beware 1) how many moles are there in 24.5 grams of cof3? 2) how many molecules are there in 150.00 grams of na2so4? 3) how many moles are there in 2.3 x 1024 atoms of sulfur? 4) how many grams are there in 7.40 x 1023 molecules of ph3? 5) how many moles are there in 7.5 x 1023 molecules of h2so4? 6) how many molecules are there in 55.5 grams of cu(clo¬3)2? 7) how many grams are there in 8.20 x 1025 molecules of water? 8) how many molecules are there in 238.05 grams of co2? 9) how many molecules are there in 2.35 grams of nh4f? 10) how many grams are there in 1.50 x 1023 molecules of n2h6? 11) how many molecules are there in 20.40 grams of sicl4? 12) how many grams are there in 3.50 moles of alcl3? 13) how many moles are there in 4.50 x 1022 molecules of ch4? 14) how many molecules are there in 9.34 grams of no? 15) how many grams does 4.00 moles of uf6 weigh? 16) how many moles are there in 230.0 grams of nh4oh?

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Biology, 31.07.2019 19:40, Mordred809

Each red blood cell carries about 250 million molecules of hemoglobin. how many molecules of oxygen could a single red blood cell deliver throughout the body if every hemoglobin molecule attached to four oxygen molecules? a. 1 trillion molecules of oxygen b. 1 x 10 to the power of 8 molecules of oxygen c. 1 billion molecules of oxygen d. 1 x 10 to the power of 10 molecules of oxygen

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Chemistry, 02.09.2019 16:30, des12410

Determine the mass in grams of each of the following: (a)0.600 mol of oxygen atoms (b)0.600 mol of oxygen molecules, o2 (c) 0.60 mol of ozone molecules, o3

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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?

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