If a neutral atom of oxygen (O) has 8 protons, 8 electrons and 7 neutrons, what is the mass number of this atom?

A. 8

B. 15

C. 16

D. 23

The pressure of a tire is 200 kPa as it is pulled out from the garage on a summer day. The temperature in the morning is 10°C. By the afternoon the temperature of the tire in the sun has reached 28°C. What is the pressure in the tire now?

For the reaction 3h2 (g) + n2 (g) 2nh3 (g), kc = 9.0 at 350°c. calculate g° at 350°c.

How many atoms are in 5.7 moles of copper atoms?

What is ISO, ANSI, IEC stand for?

Which would be the more valued result: taking one proton from each nucleus in a sample of gold or adding one proton to each gold nucleus? 1. adding one proton to each gold nucleus 2. equally valuable 3. taking one proton from each gold nucleus 4.

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?