Question

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

A. 0.3 g

B. 3.0 g

C. 5.9 g

D. 27 g
***my answer: D. 27 g

Answer 1

#2: Which of the following describes an element?

A. H2O

B. CH4

C. H2SO4

D. N2
**My answer: D. N2

Answer 2

#3: Which of the following is the correct scientific notation for 7,820,000 g?

A. 2.87x 10^5g

B. 7.82 x 10^–5 g

C. 7.82 x 10^6g

D. 7.82 x 10^–6 g
***My answer: C. 7.82 x 10^6g

Answer 3

idk are they correct??? :)

Answer 4

all correct!

Answer 5

whoo hoo!! thx!!