Which equivalence factor set should you use to convert from 4.23 x 1012 atoms of calcium (Ca) to grams of Ca?

The more particles an object has at a given temperature the more thermal energy is has true or false

Which substance has Hf defined as 0 kJ/mol? H2O (s) Ne (l) O2 (g) CO2 (g)

if scientist wants to retrieve the salt grom a sample of salwater, which of. the following should she do

Which of the following elements has chemical properties similar to selenium? Which of the following elements has chemical properties similar to selenium? sulfur fluorine nitrogen hydrogen

Are all elements abbreviated with one or two letters? If not, name some that aren't.

List at least 3 factors that can influence a body's temperature after death.

How many grams of water form when 1.24 l of gas h2 at stp completely reacts with o2?

According to the following reaction, how many grams of hydrogen peroxide ( H 2 O 2 ) are necessary to form 0.182 moles oxygen gas? hydrogen peroxide ( H 2 O 2 ) (aq) → water (l) + oxygen (g)

Using the bohr model describe the changes in electrons energy and electron location when an atom changes from the ground state to an excited state.

Sally is making a model of gold for her chemistry class. She has foam balls for the protons, neutrons, and electrons. She has added 70 protons to her model so far. How many more protons does she need to add to complete her neutral atom of gold?