An atom with 16 protons must be:

A. oxygen

B. selenium

C. sulfur

D. can't tell

Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2. What is the displacement of Andy's car after 30.0 seconds?

Arrange each set in order of decreasing atomic size: (a) Ge, Pb, Sn (b) Sn, Te, Sr (c) F, Ne, Na (d) Be, Mg, Na

Mr. Holmes is busy making a paper mache volcano that he is sure is going to win the national science fair contest. He only has room in the volcano's vent to put 100g of baking soda and 100ml of vinegar. Mr.

As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively.

About 25 of the 92 natural elements are known to be essential to life. which four of these 25 elements make up approximately 96% of living matter? a. carb

What is the effect of the biogeochemical cycles? O O O O cycling energy through a food chain recycling matter through the biosphere recycling rocks through the layers of Earth cycling nutrients through the human body

Calculate the ratio of effusion rates of oxygen (o2) to hydrogen (h2)

4. You are studying the behavior of a perfluorocarbon-based O2 carrier as an emergency treatment for hypoxemia. It has an approximate molecular radius of 2 nm.

Of the four methods of heat transfer: conduction, advection, convection, and radiation, which one is considered the most important method of heat transfer?

Which of the following is true of the water molecule? A. It has a linear shape and is polar B. It has a bent shape and is polar C. It has a linear shape and is not polar D. It has a bent shape and is not polar