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1 year ago

6

A graduated cylinder initially has 32.5 mL of water in it. After a 75.0 g piece of lead (Pb) is added to the graduated cylinder,

the water level rises to the 39.1 mL mark. What is the the volume of the piece of lead.

1 answer:

Mice21 [21]1 year ago

6 0

Answer:

39.1-32.5 and you will find your answer it always like that, you subtract your starting point from your ending point

Explanation:

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What is the volume in liters of a cube whose edge is 4.33 cm long?

andreyandreev [35.5K]

Assume that the side length of the cube is m.
Since all sides of the cube are equal, therefore, the volume of the cube can be measured using the following rule:
volume of cube = m^3

Substitute in this equation with the length given:
volume = (4.33)^3 = 81.1827 cm^3

From the standards of units conversions, 1 cm^3 = 0.001 liters
Therefore:
volume of cube = 81.1827 cm^3 = 0.0811827 liters

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2 years ago

The pressure of a 609.64 gram sample of F2 in a 88.84 L container is measured to be 2770.96 torr. What is the temperature of thi

Oxana [17]

Answer : The temperature of the gas is, 245.9 K

Explanation :

To calculate the temperature of gas we are using ideal gas equation:

$PV=nRT\\\\PV=\frac{w}{M}RT$

where,

P = pressure of gas = 2770.96 torr = 3.646 atm

Conversion used : (1 atm = 760 torr)

V = volume of gas = 88.84 L

T = temperature of gas = ?

R = gas constant = 0.0821 L.atm/mole.K

w = mass of gas = 609.64 g

M = molar mass of $F_2$ gas = 38 g/mole

Now put all the given values in the ideal gas equation, we get:

$(3.646atm)\times (88.84L)=\frac{609.64g}{38g/mole}\times (0.0821L.atm/mole.K)\times (T)$

$T=245.9K$

Therefore, the temperature of the gas is, 245.9 K

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2 years ago

A scientist has isolated a chemical compound that is partially soluble in water. The chemical helps keep water-soluble substance

VLD [36.1K]

Answer:

Based on the information, the compound is a phospholipid.

Explanation:

Phospholipids are made up of a fatty acid tail which is hydrophobic in nature and a head which comprises of phosphates that is hydrophilic in nature. Hence, phospholipids are amphiphilic compounds so they will be partially soluble in water and will allow water-soluble substances to mix with fats.

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2 years ago

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user100 [1]

Answer: Cu

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2 years ago

You can purchase nitric acid in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL. Describe exactly

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The way to working out the numbers is to increase the measure of HNO3 required by the molarity to discover what number of moles you require: 0.115. You ought to have the capacity to make sense of the recipe weight H is 1, N is 14, O is 16. The result of the quantity of moles duplicated by the recipe weight ought to give an esteem in grams. You can utilize the thickness to change over to a volume of HNO3 to add to the right volume of water.

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2 years ago

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