1) How many moles of Cu are in 257.58 g of Cu2O ?
A) 0.900 mol B) 7.20 mol C) 3.60 mol D) 1.80 mol
2) How many moles of H2) are needed to produce 15.0 g of HCL (aq) in the following reaction?
BCl3 (g) + 3 HCl (aq) > 3 HCl (aq) + B(OH)3 (aq)
A) 5.0 mol B) 0.412 mol C) 0.137 mol D) 35.0 mol
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AP Chemistry Number of Moles Practice: Part A) Lithium and nitrogen react to produce lithium nitride:6Li(s)+N2(g)→2Li3N(s). How many moles of lithium nitride are produced when 0.630 mol of lithium react in this fashion? Part B) How many moles of BCl3 are needed to produce 10.0 g of HCl(aq) in the following reaction? BCl3(g) + 3 H2O(l) → 3 HCl(aq) + B(OH)3(aq) Part C) How many moles of nitrogen are formed when 58.6 g of KNO3 decomposes according to the...
Question 23 3 pts How many moles of BC13 are needed to produce 25.0 g of HCl(aq) in the following reaction? BC13(8) + 3 H2001) - 3 HCl(aq) +B(OH)3(aq) O 2.06 mol 4.38 mol O 0.686 mol 0.229 mol « Previous Next nen
21. How many moles of Carbon are in 36.0 g of Carbon? 1.5 moles 3.0 moles 36 moles 432 moles 22. How many grams of Nitrogen gas are found in 22.4 L of Nitrogen gas? 14 g 28 g 20 g 56 g 23.What is the percent sodium in sodium chloride? 60.7% 30% 70% 39.3% 24.If you do a lab that burns Magnesium in pure Oxygen what would the empirical formula of the compound be if you started with 0.6...
1. In the reaction between glucose and oxygen below, how many grams of glucose is required to produce 12.2 L of carbon dioxide if the density of Carbon dioxide is 1.26 g/L, C2H5OH, is 0.789g/mL. C6H12O6(s) + 6 O2(g) = 6 CO2(g) +6 H2O 2. When 10.6 g of boron trichloride is reacted with water, 5.12 g of Hydrochloric acid is produced. Using the following balanced equation, calculate the percent yield for HCl for the reaction? (BCl3 = 117.17 g/mol,...
How many moles 25) How many moles of CuO can be produced from 2.25 mol of Cup in the following reaction? 2 Cu2O(s) + O2(g) - 4 CuO(s) A) 2.25 mol B) 4.50 mol C) 1.12 mol D) 9.00 mol 25)
3H2(g)+N2(g)→2NH3(g) a. How many moles of NH3 can be produced from 13.5 mol of H2 and excess N2? b. How many grams of NH3 can be produced from 4.90 mol of N2 and excess H2. c. How many grams of H2 are needed to produce 12.74 g of NH3? d. How many molecules (not moles) of NH3 are produced from 1.05×10−4 g of H2?
1.) How many moles of NaOH (aq) are needed to neutralize 3.2 mol H2SO4(aq)? 2.) How many moles of Ba(OH)2 (aq) are needed to neutralize 3L of 0.8 M HCl solution? 3.) What is the volume of 0.5 M H2SO4 solution needed to neutralize 0.15 L of 0.6M NaOH solution? 4.) How many grams of NaOH needed to neutralize 0.25 L of 0.6 M H2SO4 solution? Molar mass of NaOH= 40 g/mol 5.) 2.8g of Ba(OH)2(s) is added to water...
How many moles of NiCl2 can be formed in the reaction of 5.82 mol of Ni(s) and an excess of HCl(aq)? The other product is H2(g).
17-21 17) Consider the following reaction. How many moles of oxygen are required to produce 10.0 moes of 17) water? Assume that there is excess C3H7SH present. C3H7SH)+602(g) 3CO2(g)+S02(g)+4 H20(g) A) 15.0 moles O2 B) 6.67 moles O2 C) 10.0 moles O2 D) 40.0 moles O2 E) 250 moles O2 18) How many molecules of HCl are formed when 80.0 g of water reacts according to the following) balanced reaction? Assume excess ICl3. A) 4.46 1024 molecules HCI B) 536...
determine how many grams of hydrogen gas are produced from 27.2 g of HCl 4. Zinc metal reacts with hydrochloric acid giving off hydrogen gas, H2 according to the equation: H2() ZnCl2 (aq) + Zn )+2HCI (n) Balance the equation b. Determine how many moles of zinc are required to produce 6.25 moles of hydrogen gas? Imol Zn Imol ta Le.25 mol tH Le 25 me Zn c. Determine how many grams of zinc are required to produce 4.5 moles...