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3 years ago

Which of the following is a unit of heat? 1. Fahrenheit 2. Energy 3. Joule 4. Celsius

Chemistry

2 answers:

ELEN [110]3 years ago

6 0

The unit of heat is Joule

satela [25.4K]3 years ago

3 0

Answer : The correct option is, (3) Joule

Explanation :

S.I : It is known as the international System of Units. It is a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As per question, the unit of is joule.

Fahrenheit and Celsius are the unit of temperature.

Hence, the unit of heat is, (3) Joule

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How much heat is required to heat 1.6g of ice from -16c to steam at 112c?

oksian1 [2.3K]

Answer:

Total heat ≅ 49.07 kJ

Explanation:

Given that:

mass = 1.6 g = 0.016 kg

Initial temperature = - 16 ° C

final temperature = 112° C

specific heat for ice = 2.06 kJ/kgC

specific heat of water = 4.186 kJ/kgC

heat fusion of ice = 334 kJ/kg

specific heat for steam = 2.1 kJ/kgK

heat of vaporization of water = 2256 kJ/kg

To heat ice from -16 ° C to 0 ° C

Q₁ = 2.06 kJ/kgC × 0.016 kg × 16 ° C

Q₁ = 0.52736 kJ

To melt Ice at 0° C

Q₂= 334 kJ/kg × 0.016 kg = 5.344 kJ

To heat water from 0° C to 100° C

Q₃ = 4.186 kJ/kgC × 0.016 kg × 100° C

Q₃ = 6.6976 kJ

To vaporize water to steam at 100° C

Q₄ = 2256 kJ/kg × 0.016 kg = 36.096 kJ

To heat steam from 100C to 112° C

Q₅ = 2.1 kJ/kgC × 0.016 kg × 12 C

Q₅ = 0.4032 kJ

Total heat = Q₁ + Q₂ + Q₃ + Q₄ + Q₅

Total heat = (0.52736 + 5.344 + 6.6976 + 36.096 + 0.4032) kJ

Total heat = 49.06816 kJ

Total heat ≅ 49.07 kJ

6 0

3 years ago

Rank the following by their miscibility in

tatuchka [14]

Answer:

Explanation:

Decane is a hydrocarbon so it is a non-polar molecule. Non-polar molecules are soluble in non-polar molecules and polar molecules are soluble in polar molecules. Water is a polar molecule so it is least soluble in decane molecule and $C_{9}H_{20}$ is a non-polar molecule so it is most soluble in decane molecule. Methanol and ethanol are the derivatives of hydrocarbon so they have more solubility than water but less solubility than nonane molecules.

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3 years ago

When a reaction results in an almost complete conversion of reactants to products, chemists say that the reaction goes to comple

Agata [3.3K]

Yes, that is completion reaction.
<span>This type of reactions do not set up an equilibrium and goes until one of the reactants runs out.
</span>Three major types of completion reactions are:
1. <span>Formation of a slightly ionized product (for example mixture of sodium bromide and potassium chloride).
</span>2. <span>Formation of a gas (for example hydrogen gas from metal and acid).
3.</span> Formation of a precipitate (feor example silver chloride).<span>
</span>

5 0

3 years ago

How can a solution become saturated?

vladimir2022 [97]

Answer:

it think it is more solute added

7 0

2 years ago

Read 2 more answers

What is the mass of 8.00 moles of sodium chloride

Korolek [52]

N(NaCl)=8 moles

M(NaCl)=A(Na)+A(Cl)
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m(NaCl)=n(NaCl)·M(NaCl)
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4 0

3 years ago