Question

#1: A material has a density of 8.9 g/cm^3. You have six cubic centimeters of the substance. What is the material’s mass in grams?

A. 3.0 g

b. 5.9 g

C. 27 g

D. 53 g
**Idk i think it is either C. 27 g or D. 53 g :/

Answer 1

d=m/V

use some math!

Answer 2

dont guesss haha

Answer 3

#2: Which of the following describes an element?

A. H2O

B. CH4

C. H2SO4

D. N2
**I kinda forgot about elements... :/ i think it is D. N2 tho if i remember correctly.. but can u pls explain some more?? :) and is D even correct?? :/

Answer 4

**sorry my internet got cut off.. but hold on lemme try to solve #1 :)

Answer 5

8.9 g/cm^3=m/6
right??

Answer 6

is that right @aaronq ??? and then i multiply each side by 6???? is that correct???

Answer 7

you're right about #2. it is D, while it's still a molecule (a diatomic one (2 atoms)) it consists of only 1 element, while the others are compounds, meaning at least 2 different atoms, and these are not considered elements.

Answer 8

so yay!! #2 = D. N2 :)
and did i get the steps right for #1 above??

Answer 9

yes #1 is good (Y)

Answer 10

8.9 g/cm^3=m/6
multiply both sides by 6 and i get this???
m=53.4 which is about 53.
So my answer to #1 is D. 53 g???

Answer 11

yep! try doing these without a calculator ;)

Answer 12

okay :) but yayy!! :) thank youuu :D