Mixtures, Solutions, and Solubility - Test Test Answers

What should this mixture be classified as?

Given that the molar mass of NaCl is 58 point 4 4 g/mol , what is the molarity of a solution that contains 87 point 7 5 g of NaCl in 500 point milliliters of solution? Use molarity is equal to moles of solute over liters of solution

A 250 milliliters aqueous solution contains 1 point 5 6 times 10 to the negative 5 power g of methanol and has a density of 1 point 0 3 g over mL What is the concentration in ppm ? Use ppm is equal to mass of solute over mass of solution times 10 to the 6th power

A government laboratory wants to determine whether water in a certain city has any traces of fluoride and whether the concentration exceeds the recommended 4 point 0 0 ppm A 5 point 0 0 minus g sample of this water is found to have 0 point 1 5 2 milligrams of fluoride. Should the water be declared safe for drinking? Use ppm is equal to mass of solute over mass of solution times 10 to the 6th power

Consider the equation. Mg times s plus 2 HCl aq rightarrow MgCl sub 2 times aq plus cap h sub 2 of g Which compound is the gas in this chemical reaction?

Which statements are true of heterogeneous mixtures? 1) They settle out. 2) The proportions of solute to solvent may vary. 3) The solute is evenly distributed throughout. 4) They are composed of two solvents and two solutes.

In a coffee shop, the coffee samples are prepared for customers. i. 10 g of sugar added to 100 g of coffee ii. 10 g of sugar added to 200 g of coffee iii. 4 g of sugar added to 200 g of coffee iv. 4 g of sugar added to 100 g of coffee Based on the amount of sugar added, which sequence ranks the coffee from the sweetest coffee to the least-sweet coffee?

What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the solute's solubility?

What mass of solid that has a molar mass of 46 point 0 g/mol should be added to 150 point 0 g of benzene to raise the boiling point of benzene by 6 point 2 8 times degree C ? (The boiling point elevation constant of benzene is 2 point 5 3 times degree C times kg/mol ) Use triangle cap t sub b is equal to cap k sub bm

Which solution is a homogeneous mixture?

Which factor causes a decrease in the rate of dissolution?

Which term refers to the process by which ions that have entered solution are kept in solution?

What is the relationship between the concentration of particles in a solution and the solution’s vapor pressure?

A 1 point 0 0 liters volume of HCl reacted completely with 2 point 0 0 liters of 1 point 5 0 cap m Ca OH sub 2 according to the balanced chemical equation. 2 HCl plus Ca OH sub 2 rightarrow CaCl sub 2 plus 2 cap h sub 2 cap o What was the molarity of the HCl solution?

A number of beakers have different concentrations of a solution. Which statement best describes the most concentrated solution?

What mass of solid that has a molar mass 89 point 0 g/mol should be added to 100 point 0 g of benzene to raise the boiling point of benzene by 2 point 4 2 times degree C ? (The boiling point elevation constant of benzene is 2 point 5 3 times degree C kg/mol ) Use triangle cap t sub b is equal to cap k sub bm

Which is true about the dissolving process in water?

Which reaction will produce a solution that does not conduct electricity?

Which substance will most likely dissociate when it is dissolved in water?

The molality of a solution that is made by dissolving a certain mass of ethanol in 85 point 4 g of water is 0 point 9 5 0 m How many moles of ethanol were dissolved? Use molality is equal to moles of solute over kilograms of solvent

What is the molality of a solution that is obtained by dissolving 2 point 9 2 2 g of NaCl into 1000 point 0 g of water if the molar mass of NaCl is 58 point 4 4 g over mol ? Use molality is equal to moles of solute over kilograms of solvent

Which solute, an electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each solute is dissolved in the same mass of water?

What type of mixture scatters light and cannot be filtered easily?

Which heterogeneous mixture contains large particles that can settle out or can be filtered?

Which of the samples most likely had the lowest solubility?