What are the features of alkali metals?

a. Non-metallic, hard, high density, unreactive

c. Metallic, hard, high density, medium reactivity

b. Metallic, soft, low density, highly reactive

d. Non-metallic, medium hardness, high density, inert

The Atlantic Ocean is expanding. What does this tell us about plates under the Atlantic Ocean? A. they are being forced down B. they are being force apart C. they are being pressed together D, most likely nothing is happening to the plates

A sample of the amino acid tyrosine is barely soluble in water. Would a peptide containing only a string of Tyr residues be more or less soluble, assuming the total number of Tyr groups remains constant? Explain.

Identify the conjugate acid base pair H3PO4 (ag) + CO32=HCO3 - (ag) + HPO42 - (ag)

What type of energy is needed to get a reaction started?

14) A wheelbarrow is experiencing two forces. One is pushing 5 N to the east and the other 5 N in the exact opposite direction. What must be true of the wheelbarrow's motion? a. It is moving. b. It is accelerating. c. It is slowing down. d.

When 0.880 g of an organic compound containing carbon, hydrogen and oxygen is burned completely in oxygen, 1.760 g of co2 and 0.720 g h2 o are produced. what is the empirical formula of the compound?

In ammonium chloride salt (nh4cl) the anion is a single chloride ion, cl. what is the cation of nh4cl

What does copper II sulfate do to the enzyme activity?

In a closed system, if a gas is transported to a container with double the volume of the previous container, gas was held in, What is the gases' new volume?

Rebekah is studying a molecule and trying to determine if it is DNA or RNA. Which kind of molecule is she studying? carbohydrate protein nucleic acid lipid