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Lesechka [4]
3 years ago
6

What is the density of an object with the density of 3 when cut in half?

Chemistry
1 answer:
anyanavicka [17]3 years ago
8 0
The density is 3 because the density remains the same.
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Calculate the molecular weight when a gas at 25.0 ∘C and 752 mmHg has a density of 1.053 g/L . Express your answer using three s
stiks02 [169]

Answer:

26.0 g/mol is the molar mass of the gas

Explanation:

We have to combine density data with the Ideal Gases Law equation to solve this:

P . V = n . R .T

Let's convert the pressure mmHg to atm by a rule of three:

760 mmHg ____ 1 atm

752 mmHg ____ (752 . 1)/760 =  0.989 atm

In density we know that 1 L, occupies 1.053 grams of gas, but we don't know the moles.

Moles = Mass / molar mass.

We can replace density data as this in the equation:

0.989 atm . 1L = (1.053 g / x ) . 0.082 L.atm/mol.K . 298K

(0.989 atm . 1L) / (0.082 L.atm/mol.K . 298K) = 1.053 g / x

0.0405 mol = 1.053 g / x

x =  1.053 g / 0.0405  mol = 26 g/mol

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3 years ago
plants use energy from the sun in the process of photosynthesis to manufacture glucose what form of energy is that?
timurjin [86]
Solar, or <span>radiant to chemical.</span>
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you see a structural formula and which the symbols for elements are connected by a long Dash you can assume that the chemical bo
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In the representation of chemical molecules long dashes are used to represent simple bonds since these bonds are longer than double and triple bonds, which are represented by = and ≡ respectively.

8 0
3 years ago
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What is the name given to the electrons in the highest occupied energy level of an atom? -anions -cations -valence electrons -or
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Answer:

i know the answer the answer is valence electrons.

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What is the chemical formula for the molecule shown?
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