Chemistry, 06.01.2020 03:31 Serenitybella
Only serious answers! i appreciate ! 1.the volume of 3.50m hcl needed to make 275ml of 2.90m hcl is a. 153ml b. 228ml c. 255ml d. 332ml 2. what mass of na2so4 is needed to make 1.8 l of 3.0 m solution? (na = 23 g; s = 32 g; o = 16 g a. 142g b. 334g c. 767g d. 1,534g 3. if the percent (mass/mass) for a solute is 6% and the mass of the solution is 300 g, what is the mass of solute in solution? a. 18g b. 36g c. 72g d. 180g 4. what is the molality of a solution containing 9.5 grams of solute in .75 kg of solvent? ( molar mass of solute is 33.2 g/mole) a. 12.7m b. 5.75m c. 0.382m d. 0.0789m 5. what is the freezing point of a solution of 0.650 mol sucrose in 750.0ml of water ? (kf of water = 1.86 deg c/m) a. 1.61 deg c b. 0.00 deg c c. -1.61 deg c d. it would not freeze
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Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
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Chemistry, 23.06.2019 12:00, Renabelle6350
372 ml is the volume of aluminum, density is 2.70 g/ml what is the mass in grams
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Only serious answers! i appreciate ! 1.the volume of 3.50m hcl needed to make 275ml of 2.90m hcl...
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