This important element contains 26 electrons and rust in the presence of air.

A. Aluminum

B. iron

C. magnesium

D. silver

Which of the following is NOT a concern that scientists have about oceans getting warmer? Warmer oceans cannot store as much carbon dioxide, which is a greenhouse gas.

This equation indicates that the reaction gives off heat. What is this type of reaction called? C3H8 + ? O2 → 3CO2 + 4H2O + heat A. synthesis reaction B. decomposition reaction C. endothermic reaction D. exothermic reaction

Which of the 3 states of matter is easier to increase the temperature by one degree; in a liquid, in a solid, or in a gas?

A charged particle is known as a (n) options: plasma gas ion neutron

The amount of work done in pumping water out of a cubical vessel of height 1 m is nearly (a) 5000 J (b) 10000 J (c) 5Job (d) 10 J

These examples include learned and innate behavioral adaptations of animals. Which statement describes a learned behavioral adaptation of an animal? A. Your knee j e r k s when it is hit by a doctor. B. A dog shakes water from its fur. C.

Vitellium (Vi) has the following composition:Vi-188: 187.9122 amu; 10.861%Vi-191: 190.9047 amu; 12.428%Vi-193: 192.8938 amu; 76.711%Based on this data, what can you predict about the average atomic mass of vitellium?

if you have an experimental setup which has three unknowns, how many linearly independent equations do you need to determine the unknowns to find one unique solution?

What is a sedimentary rock consisting of material that was precipitated from water

The path of a beam of light from the sun to your eye when you are wearing sunglasses