Urea, (NH2 )2 CO, is dissolved in 250.0 g of water. The solution freezes at –0.085°C. How many grams of urea were dissolved to make this solution?

A student dissolves 19. g of methanol (CH,OH) in 425. mL of a solvent with a density of 0.98 g/mL. The student notices that the volume of the solvent does not change when the methanol dissolves in it. Calculate the molarity and molality of the student's solution. Round both of your answers to 2 significant digits. molarity = x10 molality

The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H,O). Note: "major" chemical species are those present in concentrations greater than 10 mol/L. major species present when dissolved in water compound formula 0,0,.. iron(II) bromide FeBr, sodium nitrate NaNO3 nitrous oxide N,0

You dissolve 29.22 g of NaCl in 250 mL of water. You then dilute the solution to a new volume of 1,000 mL. What is the new concentration of the diluted solution?

Chlorine bleach is a solution containing sodium hypochlorite and water.  The typical bottle of bleach has a concentration of 5.5% mass by volume of sodium hypochlorite.  Determine the volume of bleach that will contain 3.25g of sodium hypochlorite.

The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H,O). 9- Note: "major" chemical species are those present in concentrations greater than 10 major species present when dissolved in water compound formula ロロ fructose H. magnesium sulfate *osân nitrous oxide O'N Ex anation Check O 2022 McGraw Hill LLC. AllI Rights Reserved. Terms of Use | Privacy Center Accessibility 5:24 PM 4/8/202 O -5 0 1 ở H L F11 Delete F4 F5 F10 F12 PrtScr Insert E3 画

One brand of laundry bleach is an aqueous solution 4.55 % NaOCl by mass. What is the molarity of this solution? Assume a density of 1.02 g/mL.  Use M as your unit with no space between your answer and the unit.

Explain how water is able to dissolve calcium chloride (CaCl2). Be sure to use appropriate terminology in your answer. You may use a diagram to aid your explanation.

Write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H2O).

A carbohydrate contains 40.91% C, 4.58% H, and 54.51% O by mass. A solution of 11.2 g of this carbohydrate in 375 g of ethanol has a boiling point of 78.50°C. The boiling point of ethanol is 78.29°C, and Kb for ethanol is 1.23°C·kg/mol. What is the molecular formula of this carbohydrate? (Omit states-of-matter from your answer.)