Which reaction has a positive δs°? question 6 options:

a. o2 (g) + 2h2 (g) → 2h2o (l)

b. 2n2h4 (g) → 2nh3 (g) + h2 (g)

c. 2no (g) → n2o2 (g)

d. n2 (g) + 3h2 (g) → 2nh3 (g) ?

Nuclear fusion differs from nuclear fission because nuclear fusion reactions (1) form heavier isotopes from lighter isotopes (2) form lighter isotopes from heavier isotopes (3) convert mass to energy (4) convert energy to mass

Is making salt water to gurgle for a sore throat a physical or chemical change

Protein in foods are broken down into amino acids through what process? Explain your answer. a. adsorption b. elimination c. chemical digestion d. mechanical digestion

Three synonyms for introduced species

Johannes Kepler, an apprentice of Brahe, believed in the heliocentric universe but rejected past astronomers' belief in

Which describes the polarity in a water molecule? a). partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms b).

To what temperature in kelvin will a 2.3 L balloon have to be heated to expand to a volume of 400 L Assume the initial temperature of the balloon is 25 degrees celsius.

In which changes of state do atoms lose energy?

Can you live without body tissue? This is a yes or no question, no explaining required, but you can add it if you want. : D

According to the graph, which activity has used the largest amount of water over the past twenty years?