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how many moles of water, H2O, are present in 25.0 g H2O? How many moles of...
The following reaction takes place when an electric current is passed through water. It is an example of a reaction 2H200 dolary, 2H2(g) + O2(g) Select one: A decomposition O 8. combination OC. combustion O D. double replacement E single replacement What is the molar mass, to three significant figures, of sodium phosphate, NagPO4? Select one: O A. 2269 8.354 g O C. 1190 D. 1640 E. 308 g How many moles of water, H20, are present in 75.0 g...
5a) 25.0 g of C are how many moles? (2.08 moles) 24 atoms of C) 25.0 g of C are how many atoms of C? (1.25 x 10 -1 g) 20 moles of Ag are how many atoms of Ag? (6.456 x 10 -3 b) 1.072 x 10 moles of Ag are how many grams? (1.156 x 10 -3 1.072 x 10 atoms) -10 g) -12 moles) 12 c) 2.408 x 10 molecules of Cl are how many grams? (2.835...
16. 3N02(g) + H2O(l) → 2HNO3(aq) + NO(g) a. How many moles of NO are produced from 2.0 moles H20? b. How many grams of NO2 are needed to produce 65g of HNO3? 100
Question 5 How many moles of H20 in a 182 g of H2O sample? (molar mass of H20: 18.015 g/mol)
33 Consider a sample of 200. grams of H20. How many molecules of H2O are present in that sample? 11.1 molecules 6.68 x 1024 molecules 6.68 1024moles 18.02 moles 10-23molecules 1.85 X
In the reaction: C2H6(g) + O2(g) CO2(g) + H2O(g), how many moles of carbon dioxide are formed by the reaction of 4.00 moles of oxygen? 0 5.43 moles 0 4.00 moles O 3.43 moles 0 6.78 moles O 7.83 moles
How many moles of propylene (C3H6) are in 25.0 g of the substance? 100.0 mL of a 0.620 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the solution?Determine the mass in grams of 1.6 x 10-3mol glucose , C6H12O6
#6: How many moles of sodium chloride are present in 9.29 g? How many moles of sodium are present in the sample? please show work
How many moles of Na2HPO4 are present in 469.6 g of Na2HPO4? Question 6 How many moles of caffeine, C8H10N402, are present in 191.11 g of caffeine? Question 7 How many grams of FeCl3 can be prepared from 5.01 grams of Fe and excess Cl2 when the following reaction is balanced? _Fe (s) + _ Cl2@ FeCl3 (1) (unbalanced) Question 8 Calculate the molarity of a solution prepared by mixing 38.5 g of CH3CH2OH with enough water to give 500...
Part B How many moles of CO are produced when 2.2 moles C reacts? ication Express your answer using two significant figures. к" ANSWER pr moles Part C How many moles of SO2 are required to produce 0.55 mole CS2? Express your answer using two significant figures. ANSWER moles Part D How many moles of CS2 are produced when 3.0 moles C reacts? Express your answer using two significant figures. ANSWER moles Problem 7.76 - Enhanced - with Feedback You...