A 10.0-mL sample of 1.0 M NaHCO3 (sodium bicarbonate) is titrated with 1.0 M HCl (hydrochloric acid). Give the pH at the indicated volumes. 1. pH after 0 mL HCl added,
2. pH after 1.0 mL HCl added,
3. pH after 9.5 mL HCl added,
4. pH after 10.0 mL HCl added (equivalence point),
5. pH after 10.5 mL HCl added, and
6. pH after 12.0 mL HCl added.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided