Which compound is an alkyne?

(1) C2H2 (3) C4H8

(2) C2H4 (4) C4H10

Which of the following is an example of a homogeneous mixture? A. apple juice B. granite C. fruit salad D. Sand at the beach

2. All of the following are true regarding alcoholic fermentation, except that alcoholic fermentation A. produces ethanol. B. uses glycolysis. C. does not require oxygen. D. produces as much energy as cell respiration.

Combustion of hydrocarbons such as propane (C3H8) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth.

You stir a cup of hot chocolate with a spoon. Why does the spoon keep its shape in the drink? Select one: a. The spoon's particles do not move as much as the hot chocolate's particles which move in all directions. b.

according to Charles law when the temperature of a gas at constant pressure is increased it

What is the general term used to describe animals from Platyhelminthes?

Formulae for decomposition of alumium oxide?

Draw the structural formula of an alkane that has eight carbon atoms and only primary hydrogen atoms.

A 5.0 gallon container contains 15.0 moles of propane gas at room temperature (20. °c). what is the pressure of the gas? (1.0 gal = 3.79 l)

Radioisotopes tell scientists that Earth is how old? A. 65 million years B. 500 million years C. 4.5 billion years D. 13.4 billion years