A salt is obtained as a reaction between

a. a base and water.

b. a base and an acid.

c. an acid and oxygen.

d. a nonmetal and a metal.

One example of a chemical change is filtering a mixture, burning wood, boiling water, or crushing a can?

Which units are used to measure force? newtons feet miles grams

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. Sweat b. Carbon dioxide c. Aluminum d. Vegetable soup

What is the half-life of a 3 g sample of radioisotope that decayed to 0.75 g in 30 days?

Which of the following is a buffer system? Which of the following is a buffer system? H2CO3 (aq) and KHCO3 (aq) NaCl (aq) and NaOH (aq) H2O (l) and HCl (aq) HCl (aq) and NaOH (aq) NaCl (aq) and NaNO3 (aq)

48g LiOH dissolved in 1.0 L of solution. calculate the molarity

A (g) + 2B (g) → C (g) + D (g) If you initially start with 1.00 atm of both A and B and find that at equilibrium 0.211 atm of C is present, what is the value of Kp for the reaction at the temperature the reaction was run?

Erwin Schrödinger developed the quantum model of the atom. What scientific knowledge was necessary for Schrödinger's work?

What is not needed in the chemical formula for a covalent compound a-display of positive and negative charges b-specific atoms put together in the compound c-how many of each atom are combined d-abbreviation for an atoms included

Are there more bones in the arm than in the leg?