What does it mean for an element to be reduced?

When comparing land and sea temperatures, the temperatures of the sea are more constant than the temperatures of the land throughout the day Which of the following explains why?

a sample of a compound that contains only the elements C, H and N is completely burned in O2 to produce 44g of CO2, 45g of H2O, and some NO2. A possible empirical formula of the compound is A. CH2N B. CH5N C. C2H5N D. C3H3N2

Which electron dot diagram represents a molecule that has a polar covalent bond

Tion: This is the rate at which a substance undergoes a chemical change.

In electrophilic aromatic substitution reactions, which of the following molecules are considered to be less reactive than benzene?

What is meant by polar molecule?

Which kind of dating can be used to determine the exact age of the rock and which kind of carbon dating is used to compare the ages of rocks?

Calculate the density of an object with a mass of 30g and volume of 6cm^3

What happens when light from the sun passes through any type of matter? the light slows down. the light speeds up. most of the light is absorbed. most of the light is reflected.

What is the chemical name for Fe (HCO3) 2