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3 years ago

What is the SI Unit used to measure the temperature of a substance?

Chemistry

2 answers:

Marizza181 [45]3 years ago

6 0

Answer: The correct answer is Kelvin

Explanation:

Temperature of the substance is defined as the intensity of heat that a substance contains. It may also be defined as the degree of hotness or coldness.

S.I. unit stands for standard international unit.

Temperature is measured in various units such as Degree Celsius, Degree Fahrenheit and Degree kelvin.

The S.I. unit of temperature is Degree Kelvin.

Gram is the S.I. unit of Mass of the substance.

Mole is the S.I. unit of amount of substance.

ser-zykov [4K]3 years ago

5 0

Answer:

kelvin

Explanation:

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3 years ago

What is the molarity if I take 10mL of 20 volumes Hydrogen Peroxide?

Kryger [21]

Answer:

1.635 M

Explanation:

Given:

10 mL of 20 volumes Hydrogen Peroxide

Here,

20 volumes of Hydrogen Peroxide means that on decomposition of 1 mL of H₂O₂ 20 mL of O₂ is obtained

also,

means 1 dm³ of H₂O₂ solution produces 20 dm³ oxygen

Now,

at 298K and 1 atm

20 dm³ oxygen = $\frac{\textup{20}}{\textup{24.47}}$ moles

= 0.817 moles

also,

2H₂O₂ → 2H₂O + O₂

thus,

1 dm³ of solution must contain 2 × moles of O₂ as moles of H₂O₂

thus,

Number of moles of H₂O₂ = 2 × 0.817

Number of moles of H₂O₂ = 1.635 moles

Hence,

For 20 volume hydrogen peroxide is 1.635 M

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3 years ago