Which of the following compounds is not considered covalent (i. e., molecular)
a. sif4
b. naf
c. n2s3
d. br2

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

To separate a mixture of hard candies nd marbles the most efficient method would be