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Lelu [443]
3 years ago
9

Explain how the scientific method helps scientists.

Chemistry
1 answer:
Lapatulllka [165]3 years ago
4 0

As scientists work hard for the results, they may get biased and may sometimes come up with an answer that is based on that. In order to avoid such circumstances, scientific method is put into practice.

Explanation:

  • Personal preferences can some times affect a scientific answer. That is not desirable as the experiments will be repeated by different individuals and the same results should be obtained.
  • That leads to the importance of documentation of systemic observation, formation of hypothesis and the experimentation to confirm the results, which is the scientific way of coming up with the answer to a scientific problem.
  • Scientific methods thus helps in bringing more credibility to findings of the scientists and can be repeated by others to obtain the same results.
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If 22.5L of nitrogen at 748 mm Hg are compressed to 725mm Hg at constant temperature. What is the new volume?
Dahasolnce [82]

Answer:

23.2L

Explanation:

The following were obtained from the question:

V1 = 22.5L

P1 = 748 mmHg

P2 = 725mmHg

V2 =?

The new volume can be obtained by doing the following:

P1V1 = P2V2

22.5 x 748 = 725 x V2

Divide both side by 725

V2 = (22.4 x 748) /725

V2 = 23.2L

The new volume is 23.2L

6 0
3 years ago
How many grams of molybdenum(Mo) are in 2.68E24 atoms of Mo?
loris [4]
<h3>Answer:</h3>

427 g Mo

<h3>General Formulas and Concepts:</h3>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right
<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.68E24 atoms Mo or 2.68 × 10²⁴ atoms Mo

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of Mo - 95.94 g/mol

<u>Step 3: Convert</u>

<u />2.68 \cdot 10^{24} \ atoms \ Mo(\frac{1 \ mol \ Mo}{6.022 \cdot 10^{23} \ atoms \ Mo} )(\frac{95.94 \ g \ Mo}{1 \ mol \  Mo} ) = 426.966 g Mo

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

426.966 g Mo ≈ 427 g Mo

3 0
3 years ago
Describe the effect of subjecting hydrogen to pressure​
ExtremeBDS [4]

Answer:

When hydrogen is subjected to large enough pressure, it solidifies according to theory.

Explanation:

According to theory, when  hydrogen molecules are subjected to enormous degree of pressure the molecules will solidify.

What happens here is that the hydrogen–hydrogen bonds in the hydrogen molecule will break apart and the molecules collapses into hydrogen atoms.

Hence, when hydrogen is subjected to large enough pressure, it solidifies according to theory.

3 0
3 years ago
Generally, what happens to the rate of dissolution for a solid solute when you change from stirring a solution to not stirring i
Alex Ar [27]

Answer:

The rate of dissolution for a solid solute when cease of stirring is typically: B. It is decreased

Explanation:

The rate of dissolution for a solid solute decreases when you stop stirring it.

6 0
3 years ago
Which of the following statements explains the Law of Universal Gravitation?
umka21 [38]

The answer is: Objects in the universe attract each other through gravitational force, depending on their masses and distance between the objects. I took a quiz with that question and got it right. Hope it helps :)

7 0
3 years ago
Read 2 more answers
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