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taurus [48]
3 years ago
14

if 8.15 ml of water is placed in a graduated cylinder the mass of the cylinder = 56.98g and the combined mass of both the cylind

er of both the cylinder + water is 65.11g What is the mass of the water? what is the density of the water?
Chemistry
1 answer:
Allushta [10]3 years ago
4 0

1. The mass of the water is 8.13 g.

2. The density of the water is 1 g/mL

Density is related to mass and volume by the following equation:

<h3>Density = mass / volume </h3>

<h3>1. Determination of the mass of water. </h3>

Mass of cylinder = 56.98 g

Mass of cylinder + water = 65.11 g

<h3>Mass of water =? </h3>

<h3>Mass of water = (Mass of cylinder + water) – (Mass of cylinder) </h3>

Mass of water = 65.11 – 56.98

<h3>Mass of water = 8.13 g</h3>

Thus, the mass of the water is 8.13 g

<h3>2. Determination of the density of water. </h3>

Mass of water = 8.13 g

Volume of water = 8.15 mL

<h3>Density of water =? </h3>

Density = mass / volume

Density = 8.13 / 8.15

Density of water = 0.998 g/mL

<h3>Density of water ≈ 1 g/mL </h3>

Therefore, the density of the water is 1 g/mL

Learn more: brainly.com/question/24679715

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The hours taken for concentration to decrease from 0 to 74 min. to 0.21 m is 91.7 hours.

<h3>What is the rate law of a reaction?</h3>

Rate law depicts the rate of a chemical reaction depend on the concentration of the reactant.

The given reaction is second order reaction

Thus, the hours taken for concentration to decrease from 0 to 74 min. to 0.21 m is 91.7 hours.

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2 years ago
Which list ranks the gasses in the correct order from the
JulijaS [17]

Answer:

D. chlorine, oxygen, nitrogen, hydrogen.

Explanation:

  • Thomas Graham found that, at a constant  temperature and pressure the rates of effusion  of various gases are inversely proportional to  the square root of their masses.

<em>ν ∝ 1/√M</em>

where ν is the rate of effusion and M is the atomic  or molecular mass of the gas particles.

  • The molecular mass for the listed gases are:

O₂: 32.0 g/mol,

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N₂: 28.0 g/mol,

H₂: 2.0 g/mol.

  • Hence, the smallest molecular mass of the gas, the fastest rate of effusion.

So, the order from the slowest to the fastest rate of effusion is:

<em>Chlorine, oxygen, nitrogen, hydrogen.</em>

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The total amount that Staci had in hand is $200.00.

The ticket at that time costs $87.96.

One Tshirt costs, $30.00.

Now that she has paid ticket, she will deduct the ticket from the cash she has in hand, so as to know the amount she is remaining with.

Tha is, $200-$87.96 = $112.04.

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To get the number of tshirt she can buy, she will divide the amount she has in hand by the amount per piece of t shirt.

For example, $112.04 / $30 = $3.73.

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Staci has excess of 22.04 after deducting ticket and the other amount she has used to purchase the extra t shirts.

That is, $112.04 - $90 = $22.04.

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Answer:

Hey mate.......

Explanation:

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<em>Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.</em>

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