QUESTION 9 Osmium has a density of 22.6 g/cm³. The mass of a block of osmium that measures 0.103 m x 0.116 m x 0.142 m is (Write your answer in scientific notation and round to 3 significant figures. Do not include units.)

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QUESTION 8
If 0.153 L of 0.104 M Na2SO4(aq) is combined with 0.175 L of 0.209 M NaCl, what is the concentration of Nat* ions in the final solution, assuming the final volume is the
sum of the volumes of the two solutions? (Write your answer in 3 significant figures)
QUESTION 9
Osmium has a density of 22.6 g/cm³. The mass of a block of osmium that measures 0.103 mx 0.116 m x 0.142 m is_
(Write your answer in scientific notation and round to 3 significant figures. Do not include units.)
QUESTION 10
Determine the number of grams of B2H6 (molar mass 27.67 g/mol) that can be made from 3.204 g of NaBH4 (molar mass 37.83 g/mol) and 5.424 g of BF3
67.81 g/mol) when they react as shown in the balanced equation (write your answer to 4 significant figures, DO NOT INCLUDE UNITS)
3 NaBH4+4 BF33 NaBF4+2 B2H6
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Transcribed Image Text:QUESTION 8 If 0.153 L of 0.104 M Na2SO4(aq) is combined with 0.175 L of 0.209 M NaCl, what is the concentration of Nat* ions in the final solution, assuming the final volume is the sum of the volumes of the two solutions? (Write your answer in 3 significant figures) QUESTION 9 Osmium has a density of 22.6 g/cm³. The mass of a block of osmium that measures 0.103 mx 0.116 m x 0.142 m is_ (Write your answer in scientific notation and round to 3 significant figures. Do not include units.) QUESTION 10 Determine the number of grams of B2H6 (molar mass 27.67 g/mol) that can be made from 3.204 g of NaBH4 (molar mass 37.83 g/mol) and 5.424 g of BF3 67.81 g/mol) when they react as shown in the balanced equation (write your answer to 4 significant figures, DO NOT INCLUDE UNITS) 3 NaBH4+4 BF33 NaBF4+2 B2H6 Click Save All Answers to save all answers.
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