Questions from General Chemistry

Q: Give the name of each of the following polyatomic ions.

Give the name of each of the following polyatomic ions. a. CO32- b. MnO4- c. NO3- d. HSO4- e. C2H3O2- f. CrO42- g. OH- h. ClO2- i. HCO3- j. HPO42-

Q: Using the negative polyatomic ions listed in Table 5.4,

Using the negative polyatomic ions listed in Table 5.4, write formulas for each of their sodium and calcium compounds. From table 5.4:

Q: How do we know that 16.00 g of oxygen contains

How do we know that 16.00 g of oxygen contains the same number of atoms as does 12.01 g of carbon, and that 22.99 g of sodium contains the same number of atoms as each of these? How do we know that 10...

Q: Consider the amino acids alanine, cysteine, and asparagine. Which

Consider the amino acids alanine, cysteine, and asparagine. Which of these contain polar side chains? Why?

Q: Define molar mass. Using H3PO4 as an example, calculate the

Define molar mass. Using H3PO4 as an example, calculate the molar mass from the atomic masses of the elements.

Q: What is meant by the percent composition by mass for a compound

What is meant by the percent composition by mass for a compound? Describe in general terms how this information is obtained by experiment for new compounds. How can this information be calculated for...

Q: Define, compare, and contrast what are meant by the empirical

Define, compare, and contrast what are meant by the empirical and molecular formulas for a substance. What does each of these formulas tell us about a compound? What information must be known for a co...

Q: When chemistry teachers prepare an exam question on determining the empirical formula

When chemistry teachers prepare an exam question on determining the empirical formula of a compound, they usually take a known compound and calculate the percent composition of the compound from the f...

Q: Rather than giving students straight percent composition data for determining the empirical

Rather than giving students straight percent composition data for determining the empirical formula of a compound (see Question 7), sometimes chemistry teachers will try to emphasize the experimental...

Q: Balanced chemical equations give us information in terms of individual molecules reacting

Balanced chemical equations give us information in terms of individual molecules reacting in the proportions indicated by the coefficients, and also in terms of macroscopic amounts (that is, moles). W...