Question: Q: The mole fraction of the solvent is just one minus the mole fraction of what? A:
OPTIONS:
- nutrients
- solution
- molecules
- solute
Answer: solute

input with options: Q: All chemical changes involve a transfer of what? A:
OPTIONS:
- hydrogen
- pressure
- nitrogen
- energy
output: energy

Q: Q: The cubic crystal system is composed of how many different types of unit cells? A:

OPTIONS:
- one
- four
- five
- three

A: three

input: OPTIONS:
- ten
- three
- four
- two Now, answer this question: Q: How many forces do objects on earth have acting on them at all times? A:
A:
output: two

Q: Which organ in the human body filters blood and excretes urine? A:

OPTIONS:
- the liver
- the bladder
- the thyroid
- the kidney

Answer: the kidney

Q: Q: Food chains and what describe the transfer of energy within an ecosystem, from one organism to another? A:

OPTIONS:
- spider webs
- fuel webs
- the webs
- food webs

A:
food webs