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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 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...
#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
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...
How many moles of water, H2O, contain 2.0×10^22 molecules of water?