Why is water densest 40 degree Celsius

Why is it important to waft when smelling chemicals? A. Chemical have very little odor B. A chemical is best identified with smell C. Many chemical are dangerous D. Most chemical are harmless

When heat is supplied to a solid, the molecules vibrate but do not leave their positions. Why is this behavior observed?

What forces act between molecules in a molecular compound and formula units in an ionic compound?

What do you know about the imaginary element justwondericium

Nicotine is an example of a A. narcotic drug. B. stimulant drug. C. depressant drug. D. hallucinogen drug.

What is silicon used for? -matches -gunpowder -glass -steel can coating

A intramuscular medication is given at 5.00mg/kg of body weight. What is the dose in grams for a 180-lb patient?

Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars?

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?

How many litres of 0.215 m NaCl contains 4.30 mol of this salt? Assume this solvent is H2O I'm confused on this question because little m is molality but when I looked this up on google, someone solved the problem assuming it was molarity