DNA is not always available in a hair sample.

A

True

B.

False

If a car traveling 85.0 kilometers per hour how many feet will it travel in 5.00 seconds

How many moles are in 30 grams of H3PO4?

A sample of a chromium-containing alloy weighing 3.450 g was dissolved in acid, and all the chromium in the sample was oxidized to 2cro42-. it was then found that 3.

All of the following can be used to define a base except a hydronium ion donor in a reaction a substance that increases the concentration of hydroxide ions an electron pair donor in a reaction a substance that is a hydrogen ion acceptor in a

How many grams of calcium chloride are dissolved in 5.65 liters of a 0.11 m solution of calcium choride?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?

Electric force is an A. attraction and repulsion between protons and electrons . B. attraction and repulsion between protons and neutrons. C. attraction and repulsion between neutrons and electrons.

A salt crystal has a mass of 0.18 mg. how many nacl formula units does it contain?