Why are the average atomic masses of some of the elements in parentheses?

Mercury freezes at - 38.9C. What is the coldest temperature, in degrees Fahrenheit, that can be measured by using a mercury thermometer?

The N-H bond in ammonia is polar because A: nitrogen occupies more space than hydrogen. B: hydrogen is much more electronegative than nitrogen. C: it is a hydrogen bond. D: it is an ionic bond. E: nitrogen is much more electronegative than hydrogen.

A distance of 2 kilometers is equal

How much energy would be required to vaporize 45.0 grams of water?

Neon has 10 electrons and krypton has 18 electrons which element do you think has a greater chance of forming a momentary dipole and why

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for

Atoms of the halogen family typically steal two electrons from other atoms when they react true or false

Looking at the periodic table, which group consists of elements that will not form an acid when combine with hydrogen? A) radon, neon, calcium B) neon, bromine, barium C) beryllium, iodine, krypton D) lithium, potassium, fluorine

Mixtures have (exact, relative) amounts of the same substances