The atomic mass of an element is found of which of the following methods?

A.) doubling the number of protons

B.) identifying the number of protons

C.) adding the number of protons and neutrons

D.) adding the number of protons and electrons

In calculating the mean donation amount, which steps would you need to take? Check all that apply. A) Multiply each donation amount by the number of people. B) Add the total amount of money.

How many kg are in 10 pounds

Explain the difference between passive transport and active transport

What is silver? Hows it formed? Who created it? Make sure you include the year. At least 5 sentences for each.

Imagine that a new polyatomic anion called "platoate" is invented. What would an acid of "platoate" be named?

How many moles of oxygen are needed to make 6.50 moles of magnesium oxide?

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.

What material was added to powdered rock during tuttle and bowen's experiments?

Which of the following statements is true? Selected Answer: D. At least two of the above statements (A-C) are true. Answers: A. Ions are formed by adding or removing protons or electrons. B. Scientists believe that solids are mostly open space. C.

Does anybody know which element from the periodic table that has 19 electrons and 24 neutrons, for atomic charge.