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2 years ago

Please answer this question only if you know the answer! 30 points and brainliest!

Chemistry

2 answers:

liq [111]2 years ago

5 0

A. i think it’s the correct answer

telo118 [61]2 years ago

5 0

A. The circuit has insufficient power supplied by the battery

Was their meant to be a diagram?

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The gold-foil experiment was used to discover which subatomic particle? Question 2 options: electrons protons ==> neutrons (m

Gelneren [198K]

Proton, the gold foil experiment indicated that the nucleus has a positive charge.

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2 years ago

Read 2 more answers

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

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3 years ago

Why is an electron ejected when green light hits the metal?

Roman55 [17]

Explanation:

If a large photon strikes the surface, that has enough strength to take out an electrode, which will then travel to the positive side since it is negative. Current is flowing at this stage. Since the reduced photons will be unable to distinguish between atoms, no power can pass.

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2 years ago

1) Write the symbol and charge for each individual ion

ololo11 [35]

N -3

Ba +2

Sr +2

F -1

I -1

Ca +2

Mg +2

S -2

Al +3

Ba3N2

SrF2

CaI2

MgS

Al2S3

I don't really understand 2.

3 0

2 years ago

What two things effect the amount of kinetic energy an object has?

marta [7]

Answer:

mass and speed

Explanation:

the motion of an object depends on how fast it's travelling and also how much mass it has

3 0

2 years ago