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4 years ago

Which statements describe a good hypothesis? Check all that apply.

Chemistry

2 answers:

Natalka [10]4 years ago

5 0

Answer:

- A good hypothesis can be tested.

- A good hypothesis provides a possible explanation to answer a scientific question.

- A good hypothesis does not always have to be based on prior knowledge or research.

Explanation:

The reason being because hypothesis are questions asked before the experiment. They usually involve the testable question and the experiment answers it, but not always. A good hypothesis doesn't need to have accurate results.

Oxana [17]4 years ago

5 0

Answer:B : A good hypothesis can be tested. C:A good hypothesis leads to a test with measurable results. E: A good hypothesis provides a possible explanation to an answer a scientific question ( B, C, E)

Explanation:Just took the (Assignment) quiz

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There are seventeen key nutrients essential for bone health. The ideal intake of calcium is approximately 1.75 g per day. How ma

baherus [9]

Answer:

2.63×10²² atoms

Explanation:

From the question given above, the following data were obtained:

Mass of calcium (Ca) = 1.75 g

Number of atoms of calcium (Ca) =?

From Avogadro's hypothesis,

1 mole of Ca = 6.02×10²³ atoms

Recall:

1 mole of Ca = 40 g

Thus,

40 g of Ca = 6.02×10²³ atoms

Finally, we shall determine the number atoms in 1.75 g of calcium. This can be obtained as follow:

From Avogadro's hypothesis,

40 g of Ca = 6.02×10²³ atoms

Therefore,

1.75 g of Ca = 1.75 × 6.02×10²³ / 40

1.75 g of Ca = 2.63×10²² atoms

Thus, 1.75 g of Ca contains 2.63×10²² atoms.

3 0

3 years ago

What is matter?

Oduvanchick [21]

Answer:

C. anything that has mass and takes up space

4 0

3 years ago

Use the naming conventions to complete the following formula-name pairs of binary acids. Match the acid names and chemical formu

ohaa [14]

Answer:

This looks like a hard question for me is this biology

Explanation:

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3 years ago

The radii of the atoms become smaller from sodium to chlorine across period 3. This decrease is primarily a result of

Alexxx [7]

Answer:

Nuclear Charge

Explanation:

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8 0

3 years ago

The molecular weight of a gas is ________ g/mol if 3.5 g of the gas occupies 2.1 l at stp

bija089 [108]

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5 0

4 years ago