3 years ago

What is the term?

Chemistry

1 answer:

Alika [10]3 years ago

5 0

Answer:

A DNA molecule

Explanation:

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A chemist prepares a sample of helium gas at a certain pressure, temperature and volume and then removes all but a fourth of the

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Answer:

e. T₂= 4T₁

Explanation:

Initially, we have a number of moles (n₁) a gas sample at a certain pressure (P), temperature (T₁) and volume (V). We can relate these variables through the ideal gas equation.

P . V = n₁ . R . T₁

where,

R is the ideal gas constant

We can rearrange this equation like:

$T_{1}=\frac{P.V}{n_{1}.R}$

If only one fourth of the initial molecules remain n₂ = 1/4 n₁. The new temperature (T₂) assuming pressure and temperature remain constant is:

$P.V=n_{2}.R.T_{2}=\frac{1}{4} n_{1}.R.T_{2}\\\frac{P.V}{n_{1}.R} =\frac{1}{4} T_{2}\\T_{1}=\frac{1}{4} T_{2}\\T_{2}=4.T_{1}$

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3 years ago

With the atomic number 1 and an atomic mass of 1.0079, hydrogen has _________.

GarryVolchara [31]

The answer is A for number 1 and D for 2

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2 years ago

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What electron could have quantum numbers n = 4, l = 2, ml = -2, ms = -?

brilliants [131]

The answer is ms= -1/2

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3 years ago

How many moles of 0.225 M CaOH2 are present in 0.350 L of solution?

weeeeeb [17]

Answer : The number of moles of solute $Ca(OH)_2$ is, 0.0788 moles.

Explanation : Given,

Molarity = 0.225 M

Volume of solution = 0.350 L

Formula used:

$\text{Molarity}=\frac{\text{Moles of }Ca(OH)_2}{\text{Volume of solution (in L)}}$

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

$0.225M=\frac{\text{Moles of }Ca(OH)_2}{0.350L}$

$\text{Moles of }Ca(OH)_2=0.0788mol$

Therefore, the number of moles of solute $Ca(OH)_2$ is, 0.0788 moles.

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3 years ago

Hawaii, which sits over a hot spot located near the center of the Pacific

Gnoma [55]

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Shield Volcano . I've been their before

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