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Nady [450]
3 years ago
13

Copper wire is used to fabricate electrical wire. How many copper atoms are in 6.3g of wire?

Chemistry
1 answer:
KiRa [710]3 years ago
6 0

Answer:

16jbckjeb :)

Explanation:

i took the test

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An ideal gas in a 1.25-gallon container is at a temperature of 125 degrees Celsius and pressure of 2.5 atmospheres. If the gas i
Tresset [83]
You will need the equation PV = nRT

P = Pressure in kPa
V = Volume in L
n = moles
R = 8.314 (constant)
T = Temperature in Kelvin 

First convert 2.5 atm into kPa:

2.5 X 101.3 = 253.25 kPa

Convert 125 Celsius into Kelvin:

125 + 273 = 398 K

Convert Gallons to Litres:

1.25  X 3.79 = 4.74 L

Plug your values into the equation to solve for n:

(253.25)(4.74) = n(8.314)(398)

n = (253.25)(4.74)/(8.314)(398)

n = 0.362 moles

Now use M = m/n to solve for the mass of O2

M = Molar Mass 
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32 = m/(0.362)

m = (32)(0.362) 

m = 11.58g
8 0
3 years ago
Which of the following is not an example of a science? a.geology b.astrology c.astronomy d.ecology
Rasek [7]
I think it is b.astrology

6 0
3 years ago
The amount of heat involved in the synthesis of 1 mole of a compound from its elements, with all substances in their standard st
Pachacha [2.7K]

Answer:

A

Explanation:

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4 years ago
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The statements in the table summarize what Johannes Kepler stated in the early 1600s about the motion of planets.
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Answer:

it's law

Explanation:

i got it wrong because i put the wrong answer but it was law or c

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4 0
3 years ago
I don’t know what the correct answer is? Can anyone explain?
Scorpion4ik [409]

Short Answer:

C)

Long Answer:

A- When a solid is heated, it melts and becomes a liquid. (Another older term is Fusion.) An example of this is ice to water when you leave it outside the freezer.

B- When a liquid becomes a gas, it undergoes a process called boiling. Example: When you boil water, it becomes steam.

C- It is called deposition. Example: How snow forms in clouds.

7 0
3 years ago
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