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3 years ago

How much energy is needed to melt 47.6g of water

Chemistry

1 answer:

Rasek [7]3 years ago

5 0

Answer:

15.9 kJ

Explanation:

Use the equation q = nΔH

q = (47.6)(334)

q = 15898.4 J

or 15.9 kJ

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What are the requirements for combustion of a candle?

cestrela7 [59]

For a candle to burn, it requires a spark, which provides the activation energy for the oxidation reaction of the hydrocarbon making the candle.
It also requires oxygen to facilitate the oxidation of the hydrocarbon.
Therefore the two main requirements of combustion of a candle are oxygen and a spark (or an initial flame)

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3 years ago

Which of the following is the largest volume? (B?)

vekshin1

Yeah, it would be B (1.2 x 102 m^3) because the measurement gave it away even though other numbers were higher, however, the measurements for those were smaller in size.

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3 years ago

What is meant by the term chemical reaction

pantera1 [17]

Answer:

<h3> $\huge{ \underline{ \underline { \bold{ \sf{ \orange{See \: below}}}}}}$ </h3>

Explanation:

▪️ $\underline{ \bold{ \sf{ \blue{Chemical \: reaction}}}}$

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▪️ $\underline{ \bold{ \sf{ \purple{ \: Further \: more \: explanation}}}}$

Various conditions bring about these changes. The chemical reactions are represented by chemicalequation. The compounds or elements that take part in chemical reaction are called reactant. They are written at the left side of an arrow that represent a change while the compound or elements that formed after the chemical change are called product. They are written at the right side of the arrow.

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Hope I helped!

Best regards!!

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2 years ago

Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?

anygoal [31]

Answer: Boiling chips provide surfaces on which bubbles can form as the liquid boils.

Hope this helps!

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3 years ago

Consider the energy diagram below.

Kazeer [188]

Answer:

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Explanation:

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2 years ago

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