When a cup of hot chocolate cools from 90 C to 80 C, which

of the following is happening to the molecules of the liquid?

Why would the cell membrane shrink when the cells were placed in the 4% salt solution?

When 0.2 kg of gasoline undergoes combustion, 18500 kJ of energy are released. Express the heat released, 18500 kJ in calories. (Given 4.184 J = 1 cal)

Boiling occurs when a liquid changes to a gas below and at the suface is that correct

What is the correct chemical formula for NaCl

If you had excess chlorine, how many moles of of aluminum chloride could be produced from 28.0 g of aluminum?

Radioactive elements decay at a know rate known as half-life. Choose all of the correct statements concerning half-life. Carbon-14 has a half-life of 5,730 years. A 30 gram sample will be 10 grams after 5,730 years.

I am the most reactive metal in Period 4.

Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. titanium tetrachloride (ticl4) is extracted from titanium oxide using chlorine and coke (carbon). if you begin with 1.

Complete the following statements about the functions of the digestive system. The starts an involuntary swallowing action when it senses food. The squeezes food down the digestive tract by an involuntary synchronized muscle movement called.

How do you preform water displacement