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3 years ago

Which statement is true?

Chemistry

1 answer:

Amiraneli [1.4K]3 years ago

8 0

Answer: c. Matter and energy are conserved in chemical reactions.

Explanation:

According to the law of conservation of matter, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

For every chemical reaction, the law of conservation of energy is applicable which states that the energy of the system remains conserved. Energy can neither be created nor destroyed. It can be transformed from one form to another.

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What is the purpose of the lateral line

artcher [175]

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3 years ago

Mercury melts at 234.3 k. Convert this this melting point to degrees celcius

DerKrebs [107]

Answer:

2069.85°C

Explanation:

0 K − 273.15 = -273.1 °C

Then,

234 K − 273.15 = 2069.85 °C

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4 years ago

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Draw a Lewis structure for SO2 in which all atoms have a formal charge of zero. Explicitly showing the zero charges is optional.

Radda [10]

Answer:

See explanation and image attached

Explanation:

"A formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity" (chemlibretext).

We can obtain the formal charge from the formula;

Formal Charge = [number of valence electrons on atom] – [non-bonded electrons + 1/2number of bonds].

A structure in which SO2 has a zero formal charge is attached to this answer.

Image credit: Chemtopper

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3 years ago

What is the distance from earth to Neptune in standard notation and scientific notation.

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Answer:

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Which of the following is a property of water a. polar molecule b. regulates temperature c.universal solvent d. all of the above

Vladimir [108]

The answer is the letter c

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3 years ago

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