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- When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide. :math>C(s)+O2(g)CO2(g) wever, when the amount of oxygen present during the burning of the carbon is restricted, carbon monoxide is more likely to result. :math>2C(s)+O2(g)CO(g) at mass of each product is expected when a 5.00-g sample of pure carbon is burned under each of these conditions?itamin B12 , cyancobalamin, is essential for human nutrition. Its molecular formula is C63H88CoN14O14P . A lack of this vita min in the diet can lead to anemia. Cyanocohalamin is the form of the vitamin found in vitamin supplements. l type='a'> What is the molar mass of cyanocobalamin to two decimal places? How many moles of cyanocohalamin molecules are present in 250 mg of cyanocobalamin? What is the mass of 0.60 mole of cyanocobalamin? How many atoms of hydrogen are in 1 .0 mole of cyanocobalamin? What is the mass of 1.0107 molecules of cyanocobalamin? What is the mass (in grams) of one molecule of cyanocobalamin?. How many atoms of carbon are present in 1 .0 g of CH4O ? How many atoms of carbon are present in 1.0 of CH3CH2OH ? How many atoms of nitrogen are present in 25.0 g of CO( NH2)2 ?
- Give a specific example from this experiment of an error that would lead to a percent yield greater than 100%. Explain the effect.How many grams O in 115.6 g Fe(OH)3? Molar mass of Fe(OH)y is 106.867 Hint: 1 mole Fe(OH) has 3 mol O; use as a conversion factor Alternatively, use percent by mass Hint: do not need Avogadro's number Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal.Part a) Mr. Scholl likes to grow tomatoes in his backyard garden. Last year he grew a 6.27 × 10 to the power of -10 moles of tomatoes. How many tomatoes did he grow? Part b)The Waterloo Region has about 617,000 people in it. If Mr. Scholl divides his tomatoes equally among everyone in Waterloo Region, how many tomatoes will you personally receive (assuming you live in the Waterloo Region.)
- MnO2 + 4HCl ---> MnCl2 + Cl2 + 2H2O If 0.76 mole of MnO2 reacts with 46.7 g HCl, and 22 g of Cl2 is actually obtained, determine the theoretical yield of Cl2. (Express final answer with 1 decimal place.)How many grams O in 221.8 g Fe(OH)g? Molar mass of Fe(OH)g is 106.867 Hint: 1 mole Fe(OH)3 has 3 mol O; use as a conversion factor Alternatively, use percent by mass Hint: do not need Avogadro's number Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal.How many grams of CaF2 would be needed to produce 1.18 moles of F2? CaF2(s) + H2SO4(L) ----> 2HF(L) + CaSO4(s) 2HF(L) ----> F2(g) + H2(g) Thank you
- 1. a. How many grams of barium nitrite, , are present in 4.62 moles of this compound? grams b. How many moles of barium nitrite are present in 4.56 grams of this compound? moles 2. a. How many moles of sulfur dioxide, , are present in 3.76 grams of this compound? moles b. How many grams of sulfur dioxide are present in 1.69 moles of this compound? gramsA student is trying to figure out how many moles of potassium chloride are made from 4.0 grams of chlorine gas. Which step in the student’s work below is incorrect? 2 K + Cl2 --> 2 KCl step 1 step 2 step3 ?. ? ? ???× (1 mol Cl2/??. ??? ? ???)×(? ????? ???? / 2 ????? ??2)MnO2 + 4HCl ---> MnCl2 + Cl2 + 2H2O If 0.76 mole of MnO2 reacts with 45.2 g HCl, and 24 g of Cl2 is actually obtained, determine the theoretical yield of Cl2. (Express final answer with 2 decimal places)