What is the symbol for the ion with 19 protons and 18 electrons?

The ph of lemon juice is approximately 2.4. at this ph, the hydronium ion concentration is closest to which value? 1. 250 m 2. 4.00 * 10-3 m 3. 2.50 * 10-12 m 4. 5.62 * 10-4 m

New technology has made methods of transportation faster

Is the combustion of gasoline endothermic or exothermic?

Which of the following statements is not true, according to the kinetic theory

What is not represented by a balanced chemical equation? 1) The same number of atoms is on each side of the equation. 2) The formulas for all substances are correct. 3) The same mass is represented on each side of the equation.

What is the term for the different phases water can take?

The amazing successes of science are because scientists have followed the rules of science True or false

In this assignment, you will write and balance a chemical equation. Then, you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.

Lead (ii) carbonate decomposes to give lead (ii) oxide and carbon dioxide: pbco3 (s) ? pbo (s) + co2 (g) how many grams of lead (ii) oxide will be produced by the decomposition of 2.50 g of lead (ii) carbonate?

What is the difference expressed in kilograms between the mass of proton and the mass of electon?