Which of the following is used as a thermal insulator?

A. A metal spoon to stir the coffee

B. a lid to cover the coffee mug

C. A hot plate to keep mug warm

D. A ceramic mug filled with coffee

The visible part of the electromagnetic spectrum consists of the colors that we see in a rainbow. Different colors correspond to different wavelengths of light. Which color of visible light has the longest wavelength? A. Violet B. Red C. Green D.

A 19.5 g sample of krypton exerts a pressure of 60 mTorr at 50◦C. What is the volume of the container?

How many atoms are in 167 g of calcium?

What are basic laws in chemistry

How many total electrons can be contained in the 4f sublevel?

Features of carbon that makes it unique in organic chemistry

What is the difference between hydrostatic pressure and atmospheric pressure?

What is the change in energy? e of the hydrogen atom as the electron makes the transition from the n=3 energy level to the n=1 energy level?

2. What kinds of elements do molecular formulas contain?

NaOH is an organic compound true or false?