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Mrac [35]
3 years ago
15

Ocean water contains 3.5% NaCl by mass. How many grams of sodium chloride can be obtained from 750 g of seawater

Chemistry
1 answer:
Masteriza [31]3 years ago
3 0

26.25g

Explanation:

Given parameters:

Percentage of NaCl in ocean water = 3.5%

Mass of given seawater = 750g

Unknown:

Mass of NaCl in the seawater = ?

Solution:

  This is a simple percentage problem:

We have been given that ocean water contains 3.5% of NaCl;

 Therefore;

Mass of NaCl in seawater = Percentage of NaCl in ocean water x Mass of seawater

Mass of NaCl in seawater = \frac{3.5}{100} x 750g = 26.25g

Learn more:

Percentage brainly.com/question/2917248

#learnwithBrainly

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Two containers hold the same radioactive isotope. Container A contains 1000 atoms, and container B contains 500 atoms. which con
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Answer:

The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.

Explanation:

From the question,

Container A contains 1000 atoms

Container B contains 500 atoms

<u>The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.</u>

The reason for such is due to the difference in the concentration of the isotopes. Container A which contains higher number of atoms will have the more changes of the release of the neutron as the changes of the hitting and splitting increases as the density of the atoms increases.

<u>Thus, the atoms in the container A will therefore decay faster than the atoms in the container B. </u>

8 0
3 years ago
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?
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(2) the motion of the gas particles is random and straight-line, they cannot be influenced by outside forces, one example being a magnetic field.
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3 years ago
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A solution of an enzyme normally found in the human body was added to a flask containing a solution of proteins in distilled wat
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<h3><u>Answer;</u></h3>

increase the temperature from 27 degrees celsius to 37 degrees celsius

<h3><u>Explanation;</u></h3>
  • The rate of an enzyme-catalyzed reaction increases as the temperature is raised.
  • <em><u>The human body is maintained at 37°C as this is the temperature at which the enzymes in our body work best. Therefore increasing the temperature from 27 degrees Celsius to 37 degrees Celsius increases enzyme activity and in turn increases the production of amino acid in the flask.</u></em>
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3 0
3 years ago
What volume does 4.24g of argon gas occupy at 58.2 degrees celcuis and 1528torr
lilavasa [31]

Answer:

V = 1.434 L

Explanation:

Given data:

Mass of argon = 4.24 g

Temperature = 58.2 °C

Pressure = 1528 torr

Volume = ?

Solution:

58.2 °C = 58.2 + 273 = 331.2 K

1528/760= 2.01 atm

<em>Number of moles:</em>

Number of moles = mass/molar mass

Number of moles = 4.24 g / 39.948 g/mol

Number of moles = 0.106 mol

<em>Volume:</em>

PV = nRT

V = nRT/P

V =  0.106 mol ×0.0821. atm. L. mol⁻¹. K⁻¹ × 331.2K/ 2.01 atm

V = 2.88 atm L/ 2.01 atm

V = 1.434 L

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