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3 years ago

What is the molarity of NO−3 in 0.160M KNO3?

1 answer:

5 0

A solution of KNO3 consists of ions of potassium and nitrate. The ionic equation is expressed as:

KNO3 = K+ + NO3-

There is 1 is to 1 ratio between the substances. So, the molarity of NO3- in the solution is calculated as follows:

0.160 mol / L KNO3 ( 1 mol NO3- / 1 mol KNO3 ) = 0.160 M NO3-

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Explain why two liters of hydrogen gas and one liter of oxygen gas react to form two liters of water, when the pressures and tem

aleksley [76]

<u>Answer:</u> In accordance to Avogadro's law, two liters of hydrogen gas and one liter of oxygen gas react to form two liters of water.

<u>Explanation:</u>

The relationship of number of moles and volume at constant temperature and pressure was given by Avogadro's law. This law states that volume is directly proportional to number of moles at constant temperature and pressure.

Mathematically,

$V\propto n$ (at constant pressure and temperature)

The chemical equation for the formation of water molecule follows:

$2H_2+O_2\rightarrow 2H_2O$

The mole ratio of $H_2:O_2:H_2O$ is 2 : 1 : 2

The volume ratio of $H_2:O_2:H_2O$ will also be 2 : 1 : 2

We are given:

Volume of hydrogen gas = 2 L

Volume of oxygen gas = 1 L

Volume of water = 2 L

So, the volume ratio of $H_2:O_2:H_2O$ is 2 : 1 : 2

Hence, in accordance to Avogadro's law, two liters of hydrogen gas and one liter of oxygen gas react to form two liters of water.

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2 years ago

Name the four types of friction. Provide one example not used in your lesson for each type.

Bond [772]

Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces.

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2 years ago

If you have 5 unknowns and they were secondary alcohol aldehyde, carboxylic acid, amine, and alkane Put plan to identify the unk

Finger [1]

Answer:

the unknowns

Explanation:

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2 years ago

I need some help with with question:

defon

Answer:

C1V1=C2V2

C1 is 2.0mol/l

V1=?

C2=.4mol/L

V2=100ml or for this 0.1L

V1 is 20ml

Best way to prepare this is to measure out 20ml of the 2 molar solution and add 80mL to it to get to 100mL

Explanation:

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2 years ago

What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in t

alisha [4.7K]

Answer:

uhh

Explanation:

Have no clue but I hope u get the question answered

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2 years ago

Read 2 more answers