What is the mass of 0.150 mol of Na_2SO_4? How many moles and molecules are there...
250 molecules of potassium (39.098 g/mol) is equal to how many moles of potassium?
(a) How many moles of ammonium ions are in 0.405 g of ammonium carbonate? mol (b) What is the mass, in grams, of 0.0601 mol of iron(III) phosphate? (c) What is the mass, in grams, of 2.06 x 1023 molecules of aspirin, CyH8O4? (d) What is the molar mass of a particular compound if 0.072 mol weighs 6.14 g? g/mol Submit Answer
1) How many moles of water, H2O, contain 2.0×1022 molecules of water? Express the quantity in moles to two significant figures. Moles of water = ___________ mol 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 140 g of chlorine gas. Express the quantity in moles to three significant figures. Moles of chlorine gas = ___________ mol 3) Sodium hydroxide, NaOH, is a strong...
Gold has a molar mass of 197 g/mol. (a) How many moles of gold are in a 9.45 g sample of pure gold? (b) How many atoms are in the sample?
Gold has a molar mass of 197 g/mol. (a) How many moles of gold are in a 1.67 g sample of pure gold? (b) How many atoms are in the sample?
+ 6. How many moles of CsHız are contained in 3.10 x 10" molecules? 7. What is the mass in grams of 6.56 x 10^2 molecules of ascorbic acid (C.H.O.)? TH Name Date Molar Mass, Molar Ratio, A- 8. How many stoms of carbon are in a sample of acetone (C,H,O) that has 3.00 mol of hydrogen? 9. How many atoms of hydrogen are in 10.00 mL of ethanol (C110) if the density of ethanol is 0.789g/mL?
(a) How many moles of ammonium ions are in 0.777 g of ammonium carbonate? (b) What is the mass, in grams, of 0.0421 mol of iron(III) phosphate? (c) What is the mass, in grams, of 5.12 1023 molecules of aspirin, C9H8O4? (d) What is the molar mass of a particular compound if 0.070 mol weighs 6.46 g?
(a) How many moles of ammonium ions are in 0.345 g of ammonium carbonate? (b) What is the mass, in grams, of 0.0499 mol of iron(III) phosphate? (c) What is the mass, in grams, of 4.92 1023 molecules of aspirin, C9H8O4? (d) What is the molar mass of a particular compound if 0.088 mol weighs 5.44 g?
1. What is the mass of 0.25 moles of Nazo? . 2- How many moles are in 10000 miligram of Fela? 3. How many atoms are in 0.25 moles of MgF2? 4. Find the mass of 100000 atom of KOH. . 5. How many molecules are in 5 moles of Mgla? * 6- Find % of all in 1 mole of Al(OH)3. 7. How many gram of Oxygen is in 22 gram of Al(OH)3. 8- How many atoms are in...
1. What is the mass of 0.25 moles of Na.O? 2- How many moles are in 10000 miligram of Fels? 3. How many atoms are in 0.25 moles of MgFz? 4. Find the mass of 100000 atom of KOH. 5. How many molecules are in 5 moles of Mgiz? 6- Find % of all in 1 mole of Al(OH)3. 7- How many gram of Oxygen is in 22 gram of Al(OH)3 22g x 100 8. How many atoms are in...