Questions from General Chemistry

Q: The label “concentrated H2SO4” on a bottle means that there

The label “concentrated H2SO4” on a bottle means that there is a relatively amount of H2SO4 present in the solution.

Q: Which of the following acids have relatively strong conjugate bases?

Which of the following acids have relatively strong conjugate bases? a. HCN b. H2S c. HBrO4 d. HNO3

Q: How do we define the mass percent composition of a solution?

How do we define the mass percent composition of a solution? Give an example of a solution, and explain the relative amounts of solute and solvent present in the solution in terms of the mass percent...

Q: A solution that is 9% by mass glucose contains 9 g

A solution that is 9% by mass glucose contains 9 g of glucose in every g of solution.

Q: Calculate the mass, in grams, of solute present in each

Calculate the mass, in grams, of solute present in each of the following solutions. a. 375 g of 1.51% ammonium chloride solution b. 125 g of 2.91% sodium chloride solution c. 1.31 kg of 4.92% potas...

Q: In each of the following chemical equations, identify the conjugate acid

In each of the following chemical equations, identify the conjugate acid–base pairs. a. NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH-(aq) b. PO43-(aq) + H2O(l) ⇌ HPO42-(aq) + OH-(aq) c. C2H3O2-(aq) + H2O(l) ⇌...

Q: A sample of an iron alloy contains 92.1 g Fe

A sample of an iron alloy contains 92.1 g Fe, 2.59 g C, and 1.59 g Cr. Calculate the percent by mass of each component present in the alloy sample.

Q: Consider the iron alloy described in Question 19. Suppose it is

Consider the iron alloy described in Question 19. Suppose it is desired to prepare 1.00 kg of this alloy. What mass of each component would be necessary? From 19: A sample of an iron alloy contains 9...

Q: Write the formula for the hydronium ion. Write an equation for

Write the formula for the hydronium ion. Write an equation for the formation of the hydronium ion when an acid is dissolved in water.

Q: If 67.1 g of CaCl2 is added to 275 g

If 67.1 g of CaCl2 is added to 275 g of water, calculate the mass percent of CaCl2 in the solution.