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adell [148]
3 years ago
12

Calculate the mass of sodium hydroxide needed to make a 5.00L with a molarity of 0.400M​

Chemistry
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

79.994g NaOH

Explanation:

The formula for molarity is M=moles of solute/Liters of solution, M=n/L

You are given L and M, so 0.4=n/5

n (moles of solute) = 2

2 moles of NaOH, multiplied by the molar mass of NaOH (39.997) to get the mass needed: 79.994g

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In the cathode ray tube experiment, J. J. Thomson passed an electric current through different gases inside a cathode ray tube i
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It showed that atoms can be divided into smaller parts.

It showed that all atoms contain electrons.

Explanation:

The experiment carried out by J.J Thomson on the gas discharge tube by passing electric current through a tube filled with many different gases provided a good insight into the structure of an atom.

This experiment led to the development of the plum pudding model of the atom.

  • Cathode rays and it properties were discovered in this set up.
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3 years ago
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The first word in the name of an ester is derived from the ________ used in the esterification.
oksian1 [2.3K]

The first word in the name of an ester is derived from the alcohol used in the esterification.

<h3>What is esterification?</h3>

Esterification is a chemical process where an organic acid with the formula is combined with an alcohol molecule having the chemical formula (ROH).

The process of esterification is known to produce an ester molecule and during this phenomenon is released water (H2O).

An example of an esterification reaction occurs when ethanoic acid (i.e., the active ingredient of vinegar) can react with C2H5OH (i.e., ethanol) in order to form the ethyl ethanoate molecule, which is a well-known ester molecule.

In conclusion, the first word in the name of an ester is derived from the Alcohol used in the esterification.

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8 0
2 years ago
The bottom of a box has a surface area of 25.0 cm 2 . The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea
Viktor [21]
Pressure given by: 
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Force=Mass*gravitational pull
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so,
force=34*9.8=333.2
thus;
pressure=333.2/25=13.328=13.3 N/cm^2

Hope this helped :)
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3 years ago
PPLLLSSSSSSS HELLLPPP!!!!! What is runoff?
mr Goodwill [35]

Answer:

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Explanation:

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3 years ago
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Write this number using scientific notation:<br> 0.000735
bixtya [17]
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