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kupik [55]
3 years ago
8

a difference in density between gases creates buoyancy, which is the ability of an object to float. At 0 degrees celsius, helium

has a density of 0.18kg
Chemistry
1 answer:
GaryK [48]3 years ago
3 0

Answer: for an object or gas or liquid to float in another there must be a difference in density

Explanation:

Helium has a density of 0.18 kg/m³ and air has a density of 1.29 kg/m^³. If a balloon is filled with helium it will float in air due to density differences

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces

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Nimfa-mama [501]

Answer:

Mass = 4.6 g

Explanation:

Given data:

Number of molecules of sucrose = 8.1 ×10²¹ molecules

Mass of sucrose = ?

Solution:

First of all we will calculate the number of moles by using Avogadro number.

1 mole × 8.1 ×10²¹ molecules / 6.022×10²³ molecules

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kozerog [31]

Answer:

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<em>hope it helps :)</em>

<em>please mark it the brainliest!</em>

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