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2 years ago

1. What is the downward fores that acts on an airplane in flight?

Chemistry

1 answer:

Westkost [7]2 years ago

4 0

Answer: D. gravity

Explanation:

An airplane in flight is acted on by four forces: lift, the upward acting force; gravity, the downward acting force; thrust, the forward acting force; and drag, the backward acting force (also called wind resistance).

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True or false: The nucleus of an atom contains protons and neutrons.

KonstantinChe [14]

Answer:

true

Explanation:

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2 years ago

A substance is tested and has a pH of 7.0. How would you classify it?

Alexandra [31]

Answer:

Explanation:

The substance would be classified as neutral, so C.

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2 years ago

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ella [17]

Answer:

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3 years ago

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The Density of pure carbon in Diamond form is 3.52 g/cm^3. How many cubic inches would 23.7 moles of pure diamond occupy?

Vedmedyk [2.9K]

Answer : The volume of pure diamond is $0.493inch^3$

Explanation : Given,

Density of pure carbon in diamond = $3.52g/cm^3$

Moles of pure diamond = 23.7 moles

Molar mass of carbon = 12 g/mol

First we have to calculate the mass of carbon or pure diamond.

$\text{ Mass of carbon}=\text{ Moles of carbon}\times \text{ Molar mass of carbon}$

Molar mass of carbon = 12 g/mol

$\text{ Mass of carbon}=(23.7moles)\times (12g/mole)=284.4g$

Now we have to calculate the volume of carbon or pure diamond.

Formula used:

$Density=\frac{Mass}{Volume}$

Now putting all the given values in this formula, we get:

$3.52g/cm^3=\frac{284.4g}{Volume}$

Volume = $80.8cm^3$

As we know that:

$1cm^3=0.061inch^3$

So,

Volume = $0.061\times 80.8inch^3$

Volume = $0.493inch^3$

Therefore, the volume of pure diamond is $0.493inch^3$

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3 years ago

Organisms such as grass and lichens are classified as

mash [69]

I think the answer is producers

I hope that helped and have a nice day!! (:

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3 years ago