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
Answers: 3
Chemistry, 22.06.2019 05:30
Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat
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Chemistry, 22.06.2019 14:00
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Chemistry, 23.06.2019 06:10
How can liquids be seperated by density a the liquids are absorbed onto a paper b the liquids are turned into seperate vapors c the liquids are collected as they evaporate d the liquids are allowed to seperate into layers
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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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