Question

A sample of a substance has a mass of 4.2 grams and a volume of 6 milliliters. The density of this substance is
grams/milliliter.

Answer 1

just divide 4.2 by 6 and you will have your answer

Answer 2

thank you

Answer 3

your welcome

Answer 4

can you answer A student places a sample of white sodium bicarbonate powder in a test tube and heats it. The student observes that the sodium bicarbonate undergoes a chemical change. After the change, what must be true about the substance in the test tube?

A.
It is not white.
B.
It is a liquid.
C.
It is an element.
D.
It is not sodium bicarbonate.

Answer 5

no direct answers. I got tried for answering questions like this

Answer 6

NaHCO3(s) + O2(g) is a combustion reaction and when heated to a certain temperature, thermal decomposition occurs
A
B
C. straight up wrong
D. It turns into sodium carbonate + h2o + co2

what do you think?

Answer 7

There, I guess that fixes it

Answer 8

I know. I tried arguing to hero about it but it didnt get me anywhere

Answer 9

oh, I didn't know direct answers gets you in trouble. I'll keep that in mind next time. Thanks

Answer 10

they have to do at least a portion of the work

Answer 11

Got it thx for letting me know