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3 years ago

What rule is used to estimate your total stopping distance under ideal conditions?

Chemistry

1 answer:

Nadya [2.5K]3 years ago

8 0

The 4 second rule is used to estimate your total stopping distance under ideal conditions.

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Ms. Sullivan's class is designing a miniature roller coaster. After first setting it up, they find that it didn't have enough sp

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Letter D.

The scarier the better, and many people like loops

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3 years ago

An atom with 13 protons and an unknown number of neutrons is called____?

MaRussiya [10]

Aluminum contains 13 protons

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3 years ago

Read 2 more answers

How could you improve the accuracy of your measurements?

yaroslaw [1]

Explanation:

Accuracy is the nearness of observed values or measured values to the true value.

The difference between the measured and observed value gives the error incurred during the experimental procedure.

Here are some ways to improve the accuracy of measurements;

Use the right instrument to make recordings and to take measurements.
Employ the right hands and improve your technical knowledge.
Be very careful and observant while making measurement.
Ensure the instruments are properly calibrated.
Make sure the experiment follows the right design.

7 0

3 years ago

has a standard free‑energy change of − 3.59 kJ / mol at 25 °C. What are the concentrations of A , B , and C at equilibrium if, a

Mamont248 [21]

Answer: The concentrations of A , B , and C at equilibrium are 0.1583 M, 0.2583 M, and 0.1417 M.

Explanation:

The reaction equation is as follows.

$A + B \rightarrow C$

Initial : 0.3 0.4 0

Change: -x -x x

Equilbm: (0.3 - x) (0.4 - x) x

We know that, relation between standard free energy and equilibrium constant is as follows.

$\Delta G = -RT ln K$

Putting the given values into the above formula as follows.

$\Delta G = -RT ln K$

$-3.59 kJ/mol = -8.314 \times 10^{-3} kJ/mol K ln (\frac{x}{(0.3 - x)(0.4 - x)})$

x = 0.1417

Hence, at equilibrium

[A] = 0.3 - 0.1417

= 0.1583 M

[B] = 0.4 - 0.1417

= 0.2583 M

[C] = 0.1417 M

5 0

3 years ago

Is ok2 gas a element compound or homogeneous or heterogeneous mixture?

ivolga24 [154]

I'm guessing you mean O2 gas? This is an elemental compound. It can't be a mixture because it is composed of only 1 element. Hope I helped!

4 0

3 years ago