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Likurg_2 [28]
3 years ago
11

Select the true statement:

Chemistry
1 answer:
Vsevolod [243]3 years ago
8 0

Answer:

Bonds are broken and new bonds are formed during chemical reactions only.

Explanation:

  • A physical change in a substance doesn't change what the substance is.
  • In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
  • Physical changes can be reversed, chemical changes cannot be reversed with the substance changed back without extraordinary means, if at all. For example, a cup of water can be frozen when cooled and then can be returned to a liquid form when heated.

So, the right choice is:

Bonds are broken and new bonds are formed during chemical reactions only.

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Jane described two substances which participate in photosynthesis.
IceJOKER [234]
A gaseous product is formed
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What is the mass (in grams) of 9.27x1024 molecules of methanol(CH3OH)
garri49 [273]
Moles of methanol = 9.27x10^24/6.02x10^23 = 15.398 moles.

Mass of methanol = moles of methanol x molar mass of methanol
                               = 15.398 x 32.042
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Hope this helps!

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3 years ago
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You have 100 mL of a solution of benzoic acid in water; the amount of benzoic acid in the solution is estimated to be about 0.30
dimaraw [331]

Answer:

0.00370 g

Explanation:

From the given information:

To determine the amount of acid remaining using the formula:\dfrac{(final \ mass \ of \ solute)_{water}}{(initial \ mass \ of \ solute )_{water}} = (\dfrac{v_2}{v_1+v_2\times k_d})^n

where;

v_1 = volume of organic solvent = 20-mL

n = numbers of extractions = 4

v_2 = actual volume of water = 100-mL

k_d = distribution coefficient = 10

∴

\dfrac{(final \ mass \ of \ solute)_{water}}{0.30  \ g} = (\dfrac{100 \ ml}{100 \ ml +20 \ ml \times 10})^4

\dfrac{(final \ mass \ of \ solute)_{water}}{0.30  \ g} = (\dfrac{100 \ ml}{100 \ ml +200 \ ml})^4

\dfrac{(final \ mass \ of \ solute)_{water}}{0.30  \ g} = (\dfrac{1}{3})^4

\dfrac{(final \ mass \ of \ solute)_{water}}{0.30  \ g} = 0.012345

Thus, the final amount of acid left in the water = 0.012345 * 0.30

= 0.00370 g

3 0
3 years ago
When there is a shifting of party allegiances within the electorate, it is called?
IgorLugansk [536]

Party realignment a shifting of party alliances within the electorate.

<h3 /><h3>What is party alliances?</h3>

An electoral alliance is a grouping of political parties or individuals who get together primarily to run for office in elections. It is also referred to as a bipartisan electoral accord, electoral pact, electoral agreement, electoral coalition, or electoral bloc.

Founded in 2019, the Alliance Party is a centrist American political party. It is connected to the American Party of South Carolina, the Minnesota Independence Party, the Connecticut Independent Party, and the Florida Reform Party.

to learn more about party alliances go to -

brainly.com/question/12448825

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2 years ago
40.3 degrees Fahrenheit. Each hour the temperature decreases by 2.09 What is the
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ANSWER

36.12 degrees fahrenheit
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