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Agata [3.3K]
3 years ago
7

Which statement is not true about the field of science? It is based on observations and explanations of the natural world. It is

based on rational thinking, inquiry, and experimentation. It is consistent and does not need to change with new discoveries. It is replicable and tested by many scientists over time.
Chemistry
2 answers:
Vesna [10]3 years ago
5 0
Science is constantly changing as new things are always being discovered, therefore "it is consistent and does not need to change with new discoveries" is false.
Vladimir79 [104]3 years ago
5 0

Answer: It is consistent and does not need to change with new discoveries.

Explanation:

The field of science demands the improvisation in the facts, theories and details which were proposed by earlier innovators and researchers. The changes are supported by new innovations and evidences which are the outcomes of the use of old as well as new scientific methodologies. The new innovators verifies the preproposed theories and inventions which leads to the amendments.  

On the basis of the above explanation, It is consistent and does not need to change with new discoveries. is the correct answer.

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What example of mixture could be seperated using two or more techniques? Explain your answer
STatiana [176]
You can take two liquids of different densities (how much mass is in a given volume) and pour them into a funnel. An example is oil and water. When the mixture settles, the denser liquid will be at the bottom, and drips through the funnel first. This is a separation that you can just let occur naturally.
8 0
3 years ago
1. How many milliliters of 10.0 M HNO 3 are needed to prepare 0.350 L of 0.400 M solution?
tatyana61 [14]
<h3>Answer:</h3>

14 milliliters

<h3>Explanation:</h3>

We are given;

  • 10.0 M HNO₃

Prepared solution;

  • Volume of solution as 0.350 L
  • Molarity as 0.40 M

We are required to determine the initial volume of HNO₃

  • We are going to use the dilution formula;
  • The dilution formula is;

M₁V₁ = M₂V₂

Rearranging the formula;

V₁ = M₂V₂ ÷ M₁

    =(0.40 M × 0.350 L) ÷ 10.0 M

   = 0.014 L

But, 1 L = 1000 mL

Therefore,

Volume = 14 mL

Thus, the volume of 10.0 M HNO₃ is 14 mL

5 0
3 years ago
An amino acid is usually more soluble in aqueous solvent at pH extremes than it is at a pH near the isolelectric point of the am
gogolik [260]

Answer:

Option B. At pH extremes, the amino acid molecules mostly carry a net charge, thus increasing their solubility in polar solvent.

C. At very low or very high pH, the amino acid molecules have increased charge, thus form more salt bonds with water solvent molecules.

Explanation:

4 0
3 years ago
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Answer:

There are 1.8×1024 atoms in 1.5 mol HCl

Explanation:

6 0
3 years ago
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Predict the products that will be formed by the reaction below. Al(s)+Na2SO4(s)—&gt;
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Answer:

Al₂(SO₄)₃ and Na

Explanation:

Al has a charge of +3, Na has a charge of +1 and SO₄ has a charge of -2. Since cations and anions will bond we know that Al will bond with SO₄ leaving Na by itself (since this is a single replacement reaction). When Al bonds with SO₄ it makes aluminum sulfate which is Al₂(SO₄)₃ and Na will be left by itself.

3 0
3 years ago
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