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4 years ago

A parallelogram has one angle that measures 60°. What are the measures of the other three angles in the parallelogram?

Chemistry

2 answers:

yanalaym [24]4 years ago

8 0

a= 60

b=60

c= 40

d=20

if this is what u mean then i think its correct :)

p.s a parallelogram adds up to 180

umka2103 [35]4 years ago

4 0

The angles are 60°, 60°, 120° & 120° .... do you need the work too?

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In class we derived the Gibbs energy of mixing for a binary mixture of perfect gases. We also discussed that the same result is

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Answer:

Attached below

Explanation:

Free energy of mixing = ΔGmix = Gf - Gi

attached below is the required derivation of the

a) Molar Gibbs energy of mixing

ΔGmix = Gf - Gi

hence : ΔGmix = ∩RT ( X1 In X1 + X2 In X2 + X3 In X3 + ------- )

b) molar excess Gibbs energy of mixing

Ni = chemical potential of gas

fi = Fugacity

N°i = Chemical potential of gas when Fugacity = 1

ΔG = RT In ( a2 / a1 )

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3 years ago

What causes hydrogen bonding?

Sidana [21]

Answer:

the tendency of some atoms in molecules to attract electrons more than their accompanying atom.

Explanation:

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4 years ago

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At − 12.0 ∘ C , a common temperature for household freezers, what is the maximum mass of sorbitol (C6H14O6) you can add to 2.00

allochka39001 [22]

Answer:

2,347.8 grams

Explanation:

The freezing point depression Kf of water = 1.86° C / molal.

To still freeze at -12° C, then the molality of the solution 12/ 1.86 = 6.45 moles

The molecular weight of sorbitol (C6H14O6)is:

6 C = 6 ×12 = 72

14 H = 14 × 1 = 14

6 O = 6 × 16 = 96

...giving a total of 182

So one mole of sorbitol has a mass of 182 grams.

Since there are 2 kg of water, 2 × 6.45 moles = 12.9 moles can be added to the water to get the 12° C freezing point depression.

Therefore

grams = moles × molar mass

12.9 moles × 182 grams / mole = 2,347.8 grams of sorbitol can be added and still freeze

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4 years ago

CH4(g) gas reacts with F2(g) to produce CH3F(g) and HF(g) .

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Answer:

I am looking for this as well. Can someone please help!

Explanation:

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3 years ago

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solution contains 174 grams of lithium bromide in 360 grams of water, what is the mole fraction of lithium bromide

Luba_88 [7]

Answer:

$\large\boxed{\large\boxed{0.091}}$

Explanation:

The mole fraction of a component in a mixture is the number of moles of the component divided by the total number of moles of all the components, multiplied by 100.

The symbol X is used to represent the mole fraction.

$X_A=\dfrac{\text{number of moles of component A}}{\text{number of moles of all the components}}\times 100$

1. Convert masses in grams to number of moles

Formula:

number of moles = mass in grams / molar mass

a) Lithium bromide

Chemical Formula: LiBr
Molar mass: 86.845 g/mol

$\text{Number of moles}=\dfrac{174g}{86.845g/mol}=2.00mol$

b) Water

Chemical formula: H₂O

Molar mass: 18.015 g/mol

$\text{Number of moles}=\dfrac{360g}{18.015g/mol}=19.98mol\approx 20.0mol$

c) Total number of moles = 2.00 mol + 20.0 mol = 22.0 mol

2. Mole fraction of lithium bromide

$\text{Mole fraction of lithium bromide}=\dfrac{2.00}{22.0}=0.091$

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3 years ago