All elements in a period have the same energy level due to which of the following reasons?

a. the same atomic number

b. the same number of neutrons

c. the same number of electrons

d. the same number of electron shells

Can you live without chemical reactions

What type (s) of atoms make up the element carbon? A. carbon only B. oxygen only C. carbon and oxygen

All of the following require breaking and forming chemical bonds except rusting a nail smashing a rock baking a cake burning wood

14.2 grams of Na2SO4 is dissolved in water to make a 2.50 L solution. What is the molarity of the solution?__M

Why are the transition medals section ten columns wide

One of the characteristics of living things is that they respond to external changes in their environment so that their internal environment stays as stable as possible. why must an organism do this

A 21.0 kg child is running at a velocity of 2.50 m/s. The child is carrying a 2.25 kg gallon of milk. What is the momentum of the child and the milk together?

What's the mass number of this carbon atom?

Can Magnesium hydroxide be used as the base for this titration? Why or why not? 5. Describe the procedure that you will follow to prepare 250 ml of a. 100 M soliution of KHP. 6. 25.0 ml of. 100M KHP is required to neutralize 10.

What is the most metallic element