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inn [45]
3 years ago
9

How can u describes a true solution?

Chemistry
1 answer:
zubka84 [21]3 years ago
5 0
<span>True Solution is a homogeneous mixture of two or more substances in which substance dissolved (solute) in solvent has the particle size of less than 10-9 m or 1 nm. Simple solution of sugar in water is an example of true solution.</span>
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Give the word equation for the neutralization reaction of an acid and a base.
Grace [21]

Answer:Acid+Base--> salt+water

Explanation:the reaction between acids and bases is called neutralization and will always produce salt and water

7 0
3 years ago
Calculate the concentration of acetic acid and acetate ion in a 0.2 M acetate buffer at pH 5. The p K a of acetic acid is 4.76
Levart [38]

Answer:

[Acetic acid] = 0.07 M

[Acetate] = 0.13 M

Explanation:

pH of buffer = 5

pKa of acetic acid = 4.76

pH=p_{Ka} + log\frac{[Salt]}{[Acid]}

Now using Henderson-Hasselbalch equation

5=4.76 + log\frac{[Acetate]}{[Acetic\;acid]}

log\frac{[Acetate]}{[Acetic\;acid]} = 0.24

\frac{[Acetate]}{[Acetic\;acid]} = 1.74  ....... (1)

It is given that,

[Acetate] + [Acetic acid] = 0.2 M     ....... (2)

Now solving both the above equations

[Acetate] = 1.74[Acetic acid]

Substitute the concentration of acetate ion in equation (2)

1.74[Acetic acid] + [Acetic acid] = 0.2 M

[Acetic acid] = 0.2/2.74 = 0.07 M

[Acetate] = 0.2 - 0.07 = 0.13 M

5 0
3 years ago
Wwicth substance makes a recipe unheatly
Marina86 [1]
If present in a high amount, unsaturated fat makes a substance an unhealthy choice in a recipe. 
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4 years ago
7. Given a 32.0 g sample of methane gas (CH), determine the pressure that would be exerted on a container with
pishuonlain [190]

Answer:

P = 58.52 atm

Explanation:

Given data:

Mass of sample = 32.0 g

Pressure of sample = ?

Volume of gas = 850 cm³

Temperature of gas = 30°C

Solution:

Number of moles of gas:

Number of moles = mass/molar mass

Number of moles = 32.0 g/ 16 g/mol

Number of moles = 2 mol

Pressure of gas:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

30+273 = 303 K

850 cm³ × 1L /1000 cm³ = 0.85 L

by putting values,

P× 0.85 L = 2 mol × 0.0821 atm.L/ mol.K  × 303 K

P = 49.75 atm.L/ 0.85 L

P = 58.52 atm

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3 years ago
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