A single atom of an element has 21 neurons 20 electrons and 20 protons which element is it?

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca (NO3) 2 and 2.40 moles of Li3PO4? Reaction: 3Ca (NO3) 2 + 2Li3PO4 → 6LiNO3 + Ca3 (PO4) 2

When vinegar and baking soda are combined what bubbles form

What is the solubility of NH4Cl at 50°C?

Gaseous vapor observed when handling dry ice (solid co_2 2 ) physical or chemical

Question 1. Count Sergei Lvovich Levitsky invented which of the following? A) Collodion processB) Digital imaging C) Dry plates. D) Bellows camera. Question 2. What substance was the first photograph made from? A) Bitumen B) Silver. C) Lemon juice.

What four things affect the tides

What fraction of the enzymes will be active at ph=4.07 explain?

The temperature of a liquid is measured to be 212 °F. Soon afterward, the temperature is taken again and is determined to be 100 °C. Which of these is a possible true statement about the motion of the liquid's particles? A.

In a solution at 25°C, the [H+] is 3.5 * 10-6 M. What is the [OH-]?

The substance that dissolves to make a solution is called