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sammy [17]
3 years ago
10

THIS NOT MY WORK. its for my sister. HELP HER

Chemistry
2 answers:
Stolb23 [73]3 years ago
5 0

Answer:

Your answer will be b(molten material from the outer core makes its way to the surface of earth)

Explanation:

Elina [12.6K]3 years ago
4 0

Answer:

C

Explanation:

I'm pretty sure molten material comes from the inner core. I think you can search up this though, try to find where molten material comes from. Goodluck!

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Nitrogen gas (112 g) reacts with hydrogen gas to produce 40.8 g of ammonia according to the following
Lemur [1.5K]

Answer:

%yield of NH₃ = 30%

Explanation:

Actual yield of NH₃ = 40.8g

Theoretical yield = ?

Equation of reaction

N₂ + 3H₂ → 2NH₃

Molar mass of NH₃ = 17g/mol

Molarmass of N = 14.00

2 molecules of N = 2 * 14.00 = 28g/mol

Number of moles = mass / molar mass

Mass = number of moles * molar mass

Mass = 1 * 28.00 = 28g of N₂ (the number of moles of N₂ from the equation is 1).

From the equation of reaction,

28g of N₂ produce (2 * 17)g of NH₃

28g of N₂ = 34g of NH₃

112g of N₂ = x g of NH₃

X = (112 * 34) / 28

X = 136g of NH₃

Theoretical yield = 136g of NH₃

% yield = (actual yield / theoretical yield) * 100

% yield = (40.8 / 136) * 100

% yield = 0.3 * 100

% yield = 30%

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3 years ago
The simplest type of stream cipher, one in which one letter or character is exchanged for another, is known as what?
QveST [7]

Answer: This is known as substitution cipher.

Explanation:

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2 years ago
A company wants to develop audio speakers using an inexpensive type of plastic that has a very high quality of sound output. Whi
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Answer:

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What is the composition and percentage of the gases in earths atmosphere?
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