What best describes the sun?

A huge ball of fire

A mass of solid matter

Molten matter held together by gravity

A mass of protons and magnetic

Two of the main dangers for the icebreaker ship Polarstern during their year-long stay in the frozen Arctic ocean are 1) the ship being crushed by the frozen ice and 2) polar bears. True False

If 5.0 L of carbon dioxide gas are produced by the reaction below at STP, how many liters of oxygen gas were used in the reaction?

What is the concentration of the acid in this titration? 1.2 m 2.4 m 1.95 m 0.98 m 1.98 m?

What type of compound does the formula, HCl, represent?

Nomadic people received income from where

A sample of three mixed gases is at 632.0 mmhg. if the partial pressure of co2 is 124.3 mmhg and the partial pressure of n2 is 461.9 mmhg, what is the partial pressure of o2?

How do the products and reactants of a chemical change compare? The mass of the products is greater than the mass of the reactants because energy is taken in by the reaction.

All the following are characteristic properties of phosphorus. Which one is a chemical property? (a) When exposed to air, white phos - phorus will burn spontaneously, but red phosphorus will not. (b) Red phosphorus and white phos - phorus are solids.

What are the monomers of proteins called

What type of fermentation occurs in yeast?