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3 years ago

According to the arrhenius concept, an acid is a substance that ________.

Chemistry

1 answer:

nydimaria [60]3 years ago

7 0

An acid is a substance that dissociates in water to produce hydrogen ions or protons.

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What pressure will be exerted by 26g if CO2 at a temperature of 35C and a volume of 550ml?

STALIN [3.7K]

Answer:

P = 28.5 atm

Explanation:

PV = nRT => P = nRT/V

P = Pressure = ?

n = moles of sample = mass/molar mass = 26g/44g·mol⁻¹ = 0.619 mole CO₂

R = gas constant = 0.08206 L·atm/mol·K

T = temperature in Kelvin = (35 + 273)K = 308K

V = volume in Liters = 550 ml = 0.550 L

Pressure (P) = nRT/V

= (0.619 mole)(0.08206 L·atm/mol·K)(308K)/(0.550 L) = 28.5 atm

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3 years ago

What percentage of water on earth is fresh water

marshall27 [118]

Answer:

only 2.5% is fresh water on earth

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What is a solution?

Mama L [17]

The correct answer is a solute and a solvent

A solution is any homogenous mixture of two or more substances. It does not necessarily have to be liquid or gaseous.

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3 years ago

Select the correct answer. Which substance is made of polymers? A. marble B. protein C. salt D. steel

Greeley [361]

Answer:

the answer is B proteins

Explanation:

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mixas84 [53]

Answer :

Charles's Law : It is defined as the volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

Mathematically,

$V\propto T$

Boiling water bath Cool bath 1 Cool bath 2

Temperature (⁰C) 99 17 2

Temperature (K)(T) 273+99=372 273+17=290 273+2=275

Volume of water 0.0 27.0 34.0

in cool flask (mL)

Volume of water= 135.8 135.8 135.8

Air in flask (mL)

Volume of air 135.8 108.8 101.8

in cool flask (V)

$\frac{V}{T}$ $\frac{135.8}{372}=0.365$ $\frac{108.8}{290}=0.375$ $\frac{101.8}{275}=0.370$

The graph volume versus temperature for a gas is shown below.

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3 years ago