Which of the following statements about stars is true?

All stars are the same age.

Stars vary greatly in age.

none of these

Stars rarely differ in age.

Matter that is the same throughout is called what

What is one major function of the endomembrane system

The element germanium is a lustrous, hard, grayish-white solid in the carbon group. It is a semiconductor with an appearance similar to elemental silicon.

If a solution of Co (NO3) 2 has a concentration of 0.10 M, how many moles are contained in 500.0 mL of this solution?

Ionic solids will most likely dissolve in

Of the following, which does NOT have bilateral symmetry? a. Humans b. Frogs c. Fish d. Jellyfish

What is pure chemistry and applied chemistry?

A chemical equation does not give information about what

You are in a laboratory creating a new chocolate bar. You want to create the sweetest chocolate bar by maximizing the sugar concentration. You are doing this by adding the sugar to a chocolate mixture.

Determine the ph of 0.57 m methylamine (ch3nh2) with kb = 4.4 x 10-4 : ch3nh2 (aq) + h2o (l) ⇌ ch3nh3 + (aq) + oh - (aq)