Hydrocarbons are composed of the elements

(1) carbon and hydrogen, only

(2) carbon and oxygen, only

(3) carbon, hydrogen and oxygen

(4) carbon, nitrogen and oxygen

How many moles are in 42.1 grams of NaCl?

What must be added or removed to change the state of matter?

What is matter and how does it work

How many moles are in 1g of baking soda (NaHCO3) ? show all work

Why will the crucible and its contents gain mass when heated?

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon

Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons Neutrons are in motion around a nucleus that contains protons and electrons Protons are in