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3 years ago

Most of the fresh water that is available for human use cannot be seen

Chemistry

2 answers:

tresset_1 [31]3 years ago

8 0

A. True most of the fresh water can’t be seen

icang [17]3 years ago

7 0

Answer:

True. It's underground

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Greeley [361]

B, the height above or below sea level

3 0

3 years ago

A 4.7g sample of ethanol is burned in a calorimeter containing 95.8 mL of water. If the initial temperature of the water is 29.1

Anna11 [10]

Answer:

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You're like a dream

I wanna believe

Hit you with some truth

When we're together

I can't even lie

You and me got chemistry

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Got chemistry

Feel it when you're close to me

And out of reach

And in between

We got la la la, lots of good vibrations

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And out of reach

And in between

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8 0

2 years ago

How many moles are in 400.0 g of ammonium sulfide?

sdas [7]

Answer:

This is the exact answer. Please give brainliest. The answer is 132.13952.

Explanation:

5 0

2 years ago

The general rule of thumb is that the (smaller or larger) a substance's atoms and the (stronger or weaker) the bonds, the harder

Luda [366]

Answer is: <span>The general rule of thumb is that the smaller a substance's atoms and the stronger the bonds, the harder the substance will be.
If the distance between atoms is higher, lesser will be attraction between electrons and protons of atoms, smaller distance means stronger atoms attraction.

</span>

8 0

3 years ago

Calculate the volume of one mole of a gas at 1.00 atm pressure and 0 °C.

N76 [4]

Answer:

Solution:-

The gas is in the standard temperature and pressure condition i.e. at S.T.P

Therefore,

=22.4dm

As given that the expansion is isothermal and reversible

∴ΔU=0

Now from first law of thermodynamics,

ΔU=q+w

∵ΔU=0

∴q=–w

Given that the heat is absorbed.

∴q=1000cal

⇒w=−q=−1000cal

Now,

Work done in a reversible isothermal expansion is given by-

w=−nRTln(

)

Given:-

T=0℃=273K

n=1 mol

∴1000=−nRTln(

)

⇒1000=−1×2.303×2×273×log(

22.4

)

Explanation:

6 0

2 years ago