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IRINA_888 [86]
2 years ago
9

a science class is planning an investigation about gravity and objects on earth. i’m three to four sentences, explain the steps

the class should take to provide data to help them make a conclusion about the effect of gravity on objects of different masses.

Chemistry
1 answer:
andrezito [222]2 years ago
6 0

The students in the class should take the necessary steps to produce an effective experiment according to the scientific method.

<h3>What are the steps to produce an experiment?</h3>

The steps the student should take include:

  • Formulate a hypothesis.
  • Design an experiment to test the hypothesis.
  • Perform the experiment.
  • Gather data from the results.
  • Compare data with one another and come to a conclusion.

Therefore, we can confirm that by following these steps in regard to performing an experiment, the students will be able to reach a conclusion on the effect of gravity on different objects.

To learn more about gravity visit:

brainly.com/question/1479537?referrer=searchResults

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How much time would it take for 12000 atoms of nitrogen-13 (half-life is 7.13 s) to decay to 750 atoms?
Rainbow [258]
<h3>Answer:</h3>

28.52 seconds

<h3>Explanation:</h3>

Initial number of atoms of Nitrogen 12,000 atoms

Half-life = 7.13

Number of atoms after decay = 750 atoms

We are required to determine the time taken for the decay.

Note that half life is the time taken for a radioactive isotope to decay to a half of its original amount.

Using the formula;

Remaining amount = Initial amount × (1/2)^n , where n is the number of half lives

In our case;

750 atoms = 12,000 atoms × (1/2)^n

0.0625 = 0.5^n

n = log 0.0625 ÷ log 0.5

n = 4

But, 1 half life =7.13 seconds

Therefore;

Time taken = 7.13 seconds × 4

                  = 28.52 seconds

Therefore, the time taken for 12,000 atoms of nitrogen to decay to 750 atoms is 28.52 seconds

8 0
3 years ago
Match each statement with one of these terms.
skelet666 [1.2K]

Answer:

1 - e, 2 - k, 3 - a, 4 - i, 5 - b,

Explanation:

The ratio of the amount of analyte in the stationary phase to the amount in the mobile phase. --- Retention factor.

Time it takes after sample injection into the column for the analyte peak to appear as it exits the column. -- Retention time

The process of extracting a component that is adsorbed to a given material by use of an appropriate solvent system. -- Elution

Measure of chromatographic column efficiency. The greater its value, the more efficient the column. -- Theoretical plate number

Gas, liquid, or supercritical fluid used to transport the sample in chromatographic separations. -- Mobile phase

Immiscible and immobile, it is packed within a column or coated on a solid surface. -- Stationary phase

8 0
3 years ago
Bromine occurs in the ____ state at room temperature.
Studentka2010 [4]

Answer:

d  liquid

Explanation:

Bromine occurs in the liquid state at room temperature.

Bromine is the only nonmetallic element that occurs in the liquid state at room temperature.

6 0
3 years ago
Which Carbon is the triple bound attached to in 6-ethyl-2-octyne?
soldi70 [24.7K]

Answer:

-second

Explanation:

6-ethyl-2-octyne is an unsaturated compound with a triple bond.

6-ethyl-2-octyne will have a triple bound attached to the second carbon. The suffix -yne suggests that compound carry a triple bond and the number  "2" before suffix refers to the position of triple bond that is second carbon.

Hence, the correct option is  "-second ".

7 0
3 years ago
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Phantasy [73]

Answer:

c the pressure increases

5 0
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