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Novosadov [1.4K]
3 years ago
11

Boris is interested in conducting his first "real" scientific research. However, he is a bit overwhelmed with all of the possibl

e methods and designs. He's interested in exploring what kind of study apps his classmates use and which are the most effective. Boris is likely to gather quite a bit of data if he designs his study incorporating the most commonly used method in social science research, the __________.
Chemistry
1 answer:
11111nata11111 [884]3 years ago
5 0

Answer:

Questionnaire

Explanation:

This is an instrument for research usually in the form of questions with multiple choice answers with sole purpose of gathering information from respondents for research.

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A sample of hydrogen gas has an initial pressure of 2.86 atm and an initial volume of 8472 mL If the volume of the
Oliga [24]
<h3>Answer:</h3>

Gas law : Boyle's law

New pressure: 66.24 atm

<h3>Explanation:</h3>

Concept tested: Gas laws (Boyle's law)

<u>We are given,</u>

  • Initial pressure, P₁ = 2.86 atm
  • Initial volume, V₁ = 8472 mL
  • New volume, V₂ IS 365.8 mL

We need to determine the new pressure, P₂

  • According to Boyle's law , the volume of a fixed mass of a gas and the pressure are inversely proportional at constant temperature.
  • That is, P\alpha \frac{1}{V}
  • This means , PV = k (constant)
  • Therefore; P₁V₁ = P₂V₂
  • Rearranging the formula, we can get the new pressure, P₂

P₂ = P₁V₁ ÷ V₂

   = (2.86 atm × 8472 mL) ÷ 365.8 mL

   = 66.24 atm

Therefore, the new pressure is 66.24 atm

5 0
3 years ago
What is the difference between long period and short period<br>.​
Katarina [22]
The short run refers to a period of time short enough so that the amounts of at least one or more of the factors of production used by the firm cannot be changed. ... By the long run we mean a period of time long enough so that the amounts of all factors of production used by the firm can be changed.
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2 years ago
Fog is an example of solution collide suspension
IrinaVladis [17]
I'd say it's suspension, but I'm not 100% sure...

4 0
3 years ago
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Which of the following is an example of genetic engineering
Alla [95]

Answer:

B:  Inserting a gene from a flounder into salmon DNA to produce antifreeze proteins.

Explanation:

Hope this helps.

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3 years ago
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How is 8.2 x 10^4 - 6.3 x 10^3 written in scientific notation
ser-zykov [4K]

Answer:

= 7.57 × 104

(scientific notation)

= 7.57e4

(scientific e notation)

= 75.7 × 103

(engineering notation)

(thousand; prefix kilo- (k))

Explanation:

Just in case this is all of them

6 0
3 years ago
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