How does a scientist form a hypothesis?

1 answer:

8 0

Explanation: <em>The hypothesis is a prediction, but it involves more than a guess. Most of the time, the hypothesis begins with a question which is then explored through background research. It is only at this point that researchers begin to develop a testable hypothesis.</em>

(Unless you are creating an exploratory study, your hypothesis should always explain what you expect to happen)

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Which formula correctly represents the product of an addition reaction between ethene and chlorine?

Serjik [45]

The formula that correctly represents the product of an addition reaction between ethene and chlorine is C2H4Cl2
Addition reaction occurs when an atom is added to a compound that has a double bond or triple bond (unsaturated hydrocarbons). Unsaturated compounds are associated with addition reactions. For example Ethene is an example of unsaturated hydrocarbon; when reacted with chlorine gas , chlorine atoms are added to each carbon atoms.

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3 years ago

Stained glass is homogeneous heterogeneous.

Serjik [45]

Answer:

It is heterogeneous as it is made up of visibly different substances or phases.

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Peptides can be separated using an ion-exchange column based on their isoelectric (pl) values. At which pH values would two diff

dybincka [34]

Answer:b

Explanation:

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3 years ago

What is the only true way to tell if a chemical reaction has occurred?<br> CFU

Murljashka [212]

Answer:

change of colour

Explanation:

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3 years ago

Ira Lisetskai [31]

Answer:

$410mg/day *\frac{1000 ug}{1 mg}$

Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.

Explanation:

There are 1000μg in 1 mg and 1000 mg in 1g

1 mg=1000μg

The Recommended daily Amount (RDA) is 410 mg/day of magnesium. Converting 410 mg/day into μg/day

$410mg/day *\frac{1000 ug}{1 mg}$

It will become 410,000 μg/day

So Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.

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3 years ago