I will give brainlyest Explain why science is a continuous progression of study.

Chemistry

1 answer:

Likurg_2 [28]3 years ago

8 0

It’s because new discoveries are made all the time sometimes what was considered right may be found out to be wrong

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Can a nonpolar molecule contain polar covalent bonds?

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Yes they can have a trace of polar in them

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3 years ago

Compare the density of 25g of copper to 80g of copper?

tiny-mole [99]

Answer:

Explanation:

25g is less dense than 80g therefore will mostly float. if you subtract 80-25 that will leave you will 55 as the difference

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Calculate the morality of a 35.4% (by mass) aqueous solution of phosphoric acid (H3PO4). Molar mass of H3PO4 is 98.00g/mol

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2 years ago

Choose the following statements that show evidence for a chemical reaction.

Leno4ka [110]

Explanation:

A chemical reaction is defined as the reaction in which bonds between the reactants either break or form which leads to the formation of a new substance.

For example, $2Li + Cl_{2} \rightarrow 2LiCl$

So, when we drop a sodium metal into water then it produces a frizzing sound which shows the metal is reacting with water.

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This means that formation of a precipitate is also a chemical reaction.

Thus, we can conclude that following are the statements which show evidence for a chemical reaction.

Dropping sodium metal into water produces fizzing.

Mixing two aqueous solutions produces a precipitate.

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3 years ago

A student mixes some sugar into a cup of hot water. The sugar dissolves in the liquid. What are the BEST ways for the student to

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You would have to evaporate the water to get just the sugar

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