Which gas is most important to human survival? Ohydrogen oxygen Ⓒhelium carbon dioxide nitrogen 3 pts Question 17 A cop
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Question 17 A copper (II) sulfate aqueous solution can also be represented as CuSO4 (aq). In this solution, which substance is the solvent? Choices: H, OH, CUSO4, H₂O, or none of these answers. CuSO4 DH+ H20 OH. 3 pts none of these answers
If two substances are soluble in all proportions then they are nonpolar immiscible neutral miscible polar ATLEIE Pin each other. 3 pts
Question 19 Complete the sentence: A strong electrolyte ? in solution. O precipitates partially ionizes O completely ionizes forms an emulsion does not dissolve 3 pts
D Question 20 What mass of MgF2 is contained in 80.85 g of a 22.4% by mass solution of MgF2 in water? 18.1 g Ⓒ36.1 g 27.7 g 5.52 g 3 pts 1128
Question 21 0.300 moles of sodium nitrite are needed for a reaction. The solution concentration is 0.450 M. How many mL are needed? Show work. Edit View Insert Format Tools Table Paragraph B TU A 12pt 5 pts er p²v E