The atomic number of gold (au) is 79, and the atom has a mass number of 197. how many neutrons are present in the atom of gold?

Equation for hydrogen

My high school chemistry is learning this and I don't understand it. "Heat is measured by the following equation: q=m-c-AT

What is one example of a response? the angle of the sun changing during the day outside temperature dropping at night ivy growing around the pole of a fence water lost from the lungs during breathing

The bond between which two atoms has the greatest degree of polarity

What substance is considered to be the "universal" solvent? why?

What is the difference between potassium 39, 41, and 40

What is physical chemistry?

Which of the following happens during a solar eclipse? The moon appears red. The moon casts a shadow on Earth. Earth, the moon, and the sun form a triangle. Earth comes between the sun and the moon.

The four elements comprising over 90 of living matter are

Consider the gas-phase reaction, n2 (g) + 3 h2 (g) 2 nh3 (g), for which kp = 43 at 400 k. if the mixture is analyzed and found to contain 2.0 bar of n2, 2.0 bar of h2 and 27.0 bar of nh3, describe the situation: