10. The gas inside each balloon takes up the same amount of space. The
difference in the mass of the balloons is only a few grams at most. The
balloon resting on the table is filled with air. The floating balloon is filled
with helium gas. Why might the helium balloon float while the other rests
on the table?
A.
Helium has less mass in the same amount of space than air does,
so the helium balloon sinks in air.
B.
Helium has less mass in the same amount of space than air does,
so the helium balloon floats in air.
C.
Air has less mass in the same amount of space than does helium,
so the helium balloon sinks in air.
D.
Air has less mass in the same amount of space than helium does,
so the helium balloon floats in air.
Answers: 2
Chemistry, 22.06.2019 11:00
Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation
Answers: 1
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
Chemistry, 22.06.2019 21:40
A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
Answers: 3
10. The gas inside each balloon takes up the same amount of space. The
difference in the mass of th...
Mathematics, 12.09.2019 04:20
Mathematics, 12.09.2019 04:20
Mathematics, 12.09.2019 04:20
English, 12.09.2019 04:20
Advanced Placement (AP), 12.09.2019 04:20