3 years ago

A plane on the ground will weigh

Chemistry

1 answer:

sergejj [24]3 years ago

5 0

Answer:

The weight of the plane is (mass) x (acceleration of gravity).

Neither of these changes when the plane rises from the ground.

Its weight on the ground is equal to (the same as) its weight in the air.

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rewona [7]

Answer:

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Explanation:

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8 0

2 years ago

The density of benzene at 15 °c is 0.8787 g/ml. Calculate the mass of 0.1500 l of benzene at this temperature. Enter your answer

Otrada [13]

Answer:

131.8 g.

Explanation:

There is a relation that relates the density of the substance (d) to the mass (m) and the volume of the substance (V):

d = 0.8787 g/ml.

V = 0.15 L x 1000 = 150 ml.

∴ the mass of 0.15 L of benzene = d x V = (0.8787 g/ml) (150 ml) = 131.8 g.

5 0

2 years ago

A gas at 400 k is placed in a 4.0 l moveable piston. The gas is cooled to 252 k. What is the new volume of the piston?

katrin [286]

Answer:

2.52L

Explanation:

Given parameters:

T₁ = 400K

V₁ = 4L

T₂ = 252K

unknown

V₂ = ?

Solution:

To solve this problem, we are going to apply charle's law. The law states that the volume of a fixed mass of gas is directly proportional to temperature provided pressure is constant.

Mathematically,

$\frac{V_{1} }{T_{1} } = \frac{V_{2} }{T_{2} }$

Substitute and solve for V₂

$\frac{4}{400} = \frac{V_{2} }{252}$

V₂ = 2.52L

6 0

3 years ago

What is the name of this compound

lys-0071 [83]

Answer:

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Explanation:

5 0

3 years ago

How many molecules (not moles) of NH3 are produced from 5.25x10^-4 g of H2?

Oksi-84 [34.3K]

Answer:

not 100% but i think its 1.57x10^20

Explanation:

5.25x10^-4g / 2.016g

2.60x10^-4 x 6.022x10^23= 1.56x10^20 molecules

6 0

3 years ago