The clown, which your grandparents hire for your 18th birthday, is filling balloons with helium (He) to a volume of 2500 mL.
If the density of helium (He) at room temperature is 0.0001785 g/mL, calculate the mass of the helium the clown is using.
Question 1 options:
0.45
0. 44625 g
0.45 g
0.44625
Question 2 (1 point)
Saved
The density in proper scientific notation is
Question 2 options:
0.0001785
0.0001785 g/mL
1.785 x 10-4 g/mL
1.785 x 104 g/mL
Question 3 (1 point)
How many significant figures does the density have?
Question 3 options:
1
2
3
4
Question 4 (1 point)
How many significant figures does the volume have?
Question 4 options:
1
2
3
4
Question 5 (1 point)
How many significant figures should the mass have?
Question 5 options:
1
2
3
4
(these questions are all based on the info in the first question)
