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2 years ago

Hey Friends Can Yall Help Me Show Ya Work And Don’t Comment No B.S Cause Yu Will Get Cursed Out

Chemistry

1 answer:

melisa1 [442]2 years ago

3 0

C. Speed is how fast, velocity has direction and acceleration is a change in velocity.

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A mixture of ethyl acetate vapour and air has a relative saturation of 50% at 303 K and a total pressure of 100 kPa. If the vapo

AURORKA [14]

Answer : The correct option is, (b) 0.087

Explanation :

The formula used for relative saturation is:

$\text{Relative saturation}=\frac{P_A}{P_A^o}$

where,

$P_A$ = partial pressure of ethyl acetate

$P_A^o$ = vapor pressure of ethyl acetate

Given:

Relative saturation = 50 % = 0.5

Vapor pressure of ethyl acetate = 16 kPa

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

$0.5=\frac{P_A}{16kPa}$

$P_A=8kPa$

Now we have to calculate the molar saturation.

The formula used for molar saturation is:

$\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}$

and,

P(vapor free) = Total pressure - Vapor pressure

P(vapor) = $P_A$ = 8 kPa

So,

P(vapor free) = 100 kPa - 8 kPa = 92 kPa

The molar saturation will be:

$\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}$

$\text{Molar saturation}=\frac{8kPa}{92kPa}=0.087$

Therefore, the molar saturation is 0.087

5 0

3 years ago

What mass of oxygen is contained in a 5.8 g sample of NaHCO3?

White raven [17]

Molar mass of NaHCO3 is 83.9. moles of Na...O3= 5.8/83.9
=0.0691
for every mole of Na..O3 there are 3 O
n(O) = n(NaHCO3) x3
= 0.207
mass of O is the moles x molar mass (16)
therefore the mass of O is 3.3 grams

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3 years ago

Force is calculated by dividing mass by acceleration true or false?

jeka57 [31]

Hello!

False.

The equation to calculate force, according to Newton's Second Law, is equivalent to F = m · a where:

m = mass of the object

a = acceleration of the object

Those two multiplied are equivalent to force.

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2 years ago

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Which substance is acting as the Brønsted-Lowry acid in the following chemical reaction? NH4 + OH- yields NH3 + H2O

olya-2409 [2.1K]

Is that all to your question

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3 years ago

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What is the lewis structure for the anion -CH2CN?

Rina8888 [55]

The question is asking to calculate the lewis structure for the anion -CH2CN and abse on my research, Lewis structure is a simple way to keep track of bonding electrons, non-bonding electrons, and formal charges in molecules. I hope you are satisfied with my answer and feel free to ask for more

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2 years ago

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