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Shalnov [3]
3 years ago
11

Changing the pendulum design after the first trial was an example of _____________ to solve the problem presented by the teacher

. A) designing the model B) evaluating th e model C) identifying the problem D) doing research on the problem
Chemistry
2 answers:
docker41 [41]3 years ago
6 0

Answer:

C. identifying the problem

Explanation:

To be sure of what the experiment involves one need to have an hypothesis to guide the task.

Assuming the hypothesis in the experiment is , “changing the amount of weight at the end of the pendulum will change the period of the pendulum.”

The experiment design would be complementary in that it would entail measuring the period with just one amount of weight, then changing the weight without changing any other variables, then measuring the period with the new amount of weight.

Changing the pendulum design after the first trial was an example of identifying the problem or the variable tied to the one factor that we are solving for.

Luden [163]3 years ago
3 0

Answer:

Changing the pendulum design after the first trial was an example of <u>evaluating the model</u> to solve the problem presented by the teacher.

Explanation:

A model constitutes an abstract representation of a certain aspect of reality, and has a structure that is formed by the elements that characterize the aspect of the modeled reality and by the relationships between these elements.

This achieved result provides a better understanding of the problem being studied, offering aspects that can be changed or improved to solve the problem posed, obtaining more information about the reality of the phenomenon that is being represented.

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Pie

Answer:

See explanation

Explanation:

9) If an extra electron is added to the neon atom, then the electronic configuration becomes; 1s2 2s2 2p6 3s1

This last electron has quantum numbers;

n=3, l=0, m=0 and s = +1/2

This is so because the 2s level is already filled so the extra electron must go into the 3s level. The orbital quantum number and the magnetic quantum number for the s orbital is zero.

10) Electron affinity is the energy released when one mole of gaseous atoms accept one mole of gaseous electrons to form one mole of gaseous ions having a negative charge.

In the second period, fluorine has the greatest electron affinity since electron affinity increases across the period. The noble gas, neon has an electron affinity of 0KJ/mol.

11) Ionization energy decreases down the group but increases across the period due to increase in the size of the nuclear charge and decrease in the distance between the nucleus and the outermost electron. Hence, the process; Br+(g) ---->Br2+(g) + e- has the greatest ionization energy. Recall that the second ionization is always higher than the first ionization energy.

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3 0
2 years ago
Which of the following are required for plants to carry out photosynthesis?
Vika [28.1K]

Answer:

Carbon dioxide, water, and sunlight

Explanation:

3 0
2 years ago
If an organism reproduces quickly, its population can ________ faster.
Alexus [3.1K]
If an organism reproduces quickly, its population can evolve faster.
5 0
3 years ago
Read 2 more answers
7.5 moles of nitrogen gas (N2) is formed in the following reaction. How many grams
AfilCa [17]

Answer:

Mass = 255 g

Explanation:

Given data:

Number of moles of nitrogen = 7.5 mol

Mass of ammonia formed = ?

Solution:

Chemical equation:

3H₂ + N₂      →    2NH₃

Now we will compare the moles of nitrogen and ammonia.

             N₂         :        NH₃

               1          :         2

              7.5       :       2/1×7.5 = 15

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 15 mol × 17 g/mol

Mass = 255 g

6 0
2 years ago
Is the following equation balanced or unbalanced?
dangina [55]
It is balanced I think
4 0
2 years ago
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