Helium has two protons, two neutrons and two electrons. what is the charge of this atom?

a. 0

b. 2

c. 4

d. more information is needed.

Which type of elements are lanthanides and actinides part of? halogens inner transition metals metals noble gases

How many grams of solute are needed to make 125 mL of 2.50 M NH4Cl solution? Round to three significant digits.

Element m is a metal and its chloride has the formula mcl2. to which group of the periodic table does m most likely belong

Name the alcohol that contains five carbons and has a hydroxyl (alcohol) group on the second carbon.

Which of the following is NOT true of fusion? Question 9 options: 2 or more smaller atoms come together to create a larger atom Occurs in the stars, such as the sun Used in nuclear power plants High density, high temperature is required

Why is it important to reduce coefficients in a balanced equation to the lowest possible whole-number ratio?

Which agent causes sand dunes to form? Ocean waves Gravity The wind carries the sand until it runs into an obstacle Weathering of old rocks in the desert

What does composition mean in science

Which of the following descriptions best describes a solid substance? A. The volume of the substance depends on the container it is in. B. Volume of the substance changes depending on its location. C. The shape of the substance changes often. D.

Which element is present in all amino acids but not necessarily in fats or carbohydrates?