Why does filling a balloon with baking soda, getting a cup and put vinegar it in, and mix them together, represent a closed system

Why does a burning splint burn more vigorously in pure oxygen?

A radioactive nuclide is used to detect eye tumors. An atom of this radionuclide contains 15 protons, 15 electrons, and 17 neutrons. Which is symbol of this radionuclide?

Why is energy required to break a chemical bond

Which is apart of the sales process? A. Customer retention. B. Billing. C. Cost planning. D. Costumer relations

Generator is a special device that converts chemical energy to mechanical energy. True False

Which of the following contains both ionic and covalent bonding? CH4 NaCl NH4Cl N2O4 If the formula for a compound is represented by X2Y3 and the charge on the Y ion is - 2, what is the charge in the X ion? +1 +2 +3 +4

Qual e o maior orgao do corpo humano

Whic of the following fromulas represents a nonpolar molecule? a) N2 b) H2O c) NaCI d) HCI

What is the density of 19.2 g of oak that has a volume of 25.7 cm3?

Which of these is a compound? О co2, O2, Co