4. Thinking Critically Applying Concepts

Balance the following chemical equations by

adding coefficients:

a. HCI + NaOH + H2O + NaCl

b. Fe2O3 + C → Fe + CO2

C. SO2 + O2 → SO3

Find the pH of a solution whose H + concentration is 1.8 x 10-12

Which is the correct electron configuration for sodium (na) ?

Which of the types of orbitals are found in the principle energy level n=3 A) s, d B) s, p, d C) s, p D) s, p, f E) s, d, f

1. If you have 20 grams of parent material and TWO half-lives go by, how much parent material do you have remaining? How much daughter material do you now have?

Can ocean currents be caused by differences in water temperature

The atomic number of an element best corresponds to which of the following? O The mass of an atom of that element. O The number of electrons orbiting the nucleus of an atom of that element.

If a dinosaur once lived in mexico, and i now live in arkansas, can i be drinking the same water the dinosaur did?

Dough to which potassium bromate has been added rises better, producing a lighter, larger volume loaf.

Each enzyme has an optimal temperature and pH that it works best in. If enzyme ABC works best at pH 7, but ABC is in a cell with a pH of 9, will it catalyze more or less reactions?

What is the molarity of a solution that contains 5.0 moles of solute in 2.0 liters of solution?