Which statement is not true?

A) All planetary orbits are elliptical

B) Some planets revolve backwards

C) All planets revolve are the sun

D) All planets spin/rotate on their axis

Which description best characterizes the motion of particles in a solid

What is the only force acting on an object orbiting earth

Malia was able to make a paper lip float on the surface of water. What will most likely happen to the paperclip if a drop of dishwashing detergent is added near it?

Explanation electrovalent bond

Aluminum bronze contains 92.0% of copper and 8.0% aluminum. what maximum mass of aluminum bronze can be prepared from 73.5g of copper and 42.2g of aluminum?

cetic anhydride can be synthesized by heating acetic acid with a strong dehydration agent through nucleophilic acyl substitution. Why is this method not practical for preparation of acetic benzoic anhydride (a mixed anhydride) ?

Determine the number of grams of Carbon in 215 g of sucrose.

Which of the following has the highest critical temperature? H2 N2 NH3 H2O

What happens when an atom is exposed to an energy source such as electricity?

If a simple gas is collected over water. The atmospheric pressure is 778 mm and the temperature is 30°C. If the vapor pressure of water at 30 C is 31.8 mm, what is the pressure of the gas?