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amid [387]
4 years ago
7

Why do electrons flow through a wire?

Chemistry
1 answer:
I am Lyosha [343]4 years ago
4 0

Answer:

When electrons flow through a conductor such as a wire, it is called, "Electricity".

Explanation:

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I hope this helps you with your problem !!!!!

5 0
3 years ago
How many moles of NaCl are present in 2.50 L of a 0.070 M solution?
posledela

Given :

Volume of NaCl solution 2.5 L .

Molarity of NaCl solution is 0.070 M .

To Find :

How many moles are present in the solution.

Solution :

Let, n be the number of moles.

We know, molarity is given by :

M = \dfrac{n}{V(in\ L)}

So,

n = M \times V\\\\n = 0.070\times 2.5 \\\\n = 0.175\ moles

Therefore, number of moles of NaCl is 0.175 moles.

6 0
3 years ago
What is the main product of the fusion reactions in our sun?
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The sun generates its energy by nuclear fusion of hydrogen nuclei into helium.
8 0
4 years ago
what is the amount of heat,in joules, required to increase the temperature of a 49.5-gram sample of wanted from 22c to 66c
aniked [119]

Answer :

the amount of heat,in joules, required to increase the temperature of a 49.5-gram sample of wanted from 22°c to 66°c is 9.104 Joules.

Explanation:

The answer can be calculated using the formula

Q = mCрΔT

where

Q is the amount of heat required in joules to raise the temperature.

m is the mass of the sample in Kg.

Cp is the specific heat of the sample in J/Kg°C.

ΔT is the change in temperature required.

Here, m = 49.5-gram = 0.0495 kg

Cp = 4.18 J/Kg°C (for water)

T₁ = 22°C  ; T₂ = 66°C

ΔT =  66 - 22 = 44

Substituting values in Q = mCрΔT

Q = (0.0495)(4.18)(44)

                  Q = 9.104 J

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3 years ago
PLEASE HELP WITH QUESTION #3!!!!
Margarita [4]

Answer:

40 degrees

Explanation:

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3 years ago
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