You have 10.0 g each of sodium, iron, silver, zinc and neon. Which contains the smallest number of moles?
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You have 10.0 g each of sodium, iron, silver, zinc and neon. Which contains the smallest...
Assume that you have 10.0 g of each of the following substances. To which substance would you have to add the smallest amount of energy to change the temperature by the same amount? a. Copper (specific heat capacity = 0.387 J/g°C) b. Lead (specific heat capacity = 0.128 J/g°C) c. Gold (specific heat capacity = 0.129 J/g°C) d. Iron (specific heat capacity = 0.4998 J/g°C) e. Silver (specific heat capacity = 0.235 J/g°C)
1. You have 200 grams of Carbon and 200 grams of Zinc. (a) Which contains larger numbers of moles? Explain (b) Which contains more atoms? Explain
You have 10 g of neon monotonic gas and 10 g of nitrogen gas (diatomic). a) Which gas consists of a larger number of moles? Explain. b) Which gas has a larger number of molecules? Explain. c) Which gas has a larger number of atoms? Explain.
10.0 mL of 0.360 M sodium sulfide is reacted with 25.00 mL of 0.415 M silver nitrate according to the chemical equation shown below. (Na2S= 78.05 g/mol, AgNO3= 169.91 g/mol, NaNO3= 85.00 g/mol, Ag2S=172.02 g/mol) Na?2?S (aq) + 2AgNO3? (aq) yields (arrow) 2NaNO?3? (aq) +Ag2S (s) Caculate the theorectical yield of silver sulfde in grams. State which reactant if any any is limiting and explain how you know this. After all the limiting reactant is used, how many moles of...
Which of the following elements is a nonmetal? O sodium O nitrogen O iron O silver O calcium
7. A solid sample X contains zinc and silver only. An experiment was carried out to determine the percentage by mass of zinc in the sample X. 1.80 g of the sample X was dissolved in 40.0 cm of 1.50 M hydrochloric acid. The excess acid required 13.60 cm of 1.00 M sodium hydroxide solution for complete neutralization. (a) Write an equation for the reaction between the sample X and HCl(aq). (1 mark) (b) How can we know that the...
Which of the following contains the largest number of molecules? a) 10.0 g CH4 b) 10.0 g C2H6 c) 10.0 g SO2 d) 10.0 g Xe
1. When mixed, solutions of silver nitrate, AgNO, and sodium phosphate, Na3PO4, will form a precipitate of silver phosphate, Ag2PO4. The balanced equation is: 3AgNO3(aq) + Na3PO4(aq) Ag3PO4(s) + 3NaNO3(aq) Which of the following statements regarding this reaction is incorrect? A. 6 moles of AgNO, will react with 2 moles of Na2PO4 B. 9 moles of AgNO3 will form 2 moles of Ag3PO4, given sufficient Na3PO4 C. 1.5 moles of NaNO, will be formed when 0.5 mole of Na PO,...
Q7) A 1.23 g sample, which contains gold (Au), silver (Ag) and metal oxides, is treated with concentrated nitric acid (HNO;), which dissolves all the metals and metal oxides with the exception of the gold. The mass of yellow metal remaining is 7.4 x 10 g. The solution is then treated with aqueous sodium chloride (NaCI), which precipitates silver chloride (AgCI) and nothing else. A total of 0.196 g of AgCl is obtained. What is the percent gold and silver...
You have a ring made from silver and zinc. What testing can be done to determine if their is zinc in the ring. (try to use periodic trends and properties of elements in your answer)