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3 years ago

Which of the following statements is correct?

1 answer:

7 0

The answer is B.

B: A rock will weigh more on Earth than on the moon.

Moon's gravity is less than Earth's, this means that objects weigh less on the moon then they do on earth.

plz give me brainliest :)

You might be interested in

What is the mass of 2.65 millimoles of sulfur?

Bas_tet [7]

Divide this problem in to two steps: 1. Convert millimoles to moles. 2. Convert moles to grams.

1.
2.65 mlmol x 1mol/1000mlmol=.00265mol

2.
.00265mol x 32.065g/1 mol=.0850g S

Let me know if you need more explanation on why I used the conversions that I did.

6 0

4 years ago

Graph of the relationship between mass and thermal energy

elixir [45]

Thermal energy is the sum of the kinetic and potential energies of all the particles in an object.

Assume that you have 250 gL of water and 1 kg of water at the same temperature.

Then, each water molecule has the same kinetic energy.

The larger sample contains four times as many molecules, so it contains four times as much thermal energy.

Thus, thermal energy is directly proportional to mass.

In symbols, KE ∝ m or KE = km.

The graph of a direct proportion is a straight line passing trough the origin.

It should look something like the graph below.

6 0

4 years ago

Classify the following sets of measurements as accurate, precise, both, or neither.

azamat

Answer:

Explanation:

Accuracy is defined is as the ability to perfectly repeat results in an experiment. It is simply reproducing the same set of result with little to no altercation.

Precision is nearness of the result to the true value.

(a) Checking for consistency in the weight of chocolate chip cookies: 17.27 g, 13.05 g, 19.46 g, 16.92 g

The result above is neither accurate nor precise. We can see a lot of inconsistencies in the readings shown and no repeatability whatsoever.

(b) Testing the volume of a batch of 25- mL pipettes: 27.02mL, 26.99 mL, 26.97 mL, 27.01 mL

The results here are accurate but not precise. They are a little bit off the 25mL mark but the experiment was able to reproduce nearly the same result.

(c)Determining the purity of gold: 99.9999%, 99.9998%, 99.9999%

This result is both precise and accurate. Pure Gold should be 100% and our values are very close. The experiment also was able to generate very accurate results.

3 0

3 years ago

4NH3+5O2=4NO+6H20 if 32.5 grams of NH3 react with enough oxygen, how many grams of water should form?

Aneli [31]

51.3 gram of water should form if 32.5 g of NH₃ react with enough oxygen.

<h3>How to find the Number of moles ?</h3>

To calculate the number of moles use the formula

Number of moles = $\frac{\text{Given Mass}}{\text{Molar Mass}}$

= $\frac{32.5}{17}$

= 1.9 mol

4NH₃ + 5O₂ → 4NO + 6H₂O

4 mol of NH₃ react with oxygen to given 6 mole of water.

So 1.9 mol of NH₃ produces = $\frac{1.9}{4}\times 6$

= 2.85 mol of water

Mass of water = Molar Mass of water × Number of moles of water

= 18 × 2.85

= 51.3 gram

Thus from the above conclusion we can say that 51.3 gram of water should form if 32.5 g of NH₃ react with enough oxygen.

Learn more about the Moles here: brainly.com/question/15356425

#SPJ1

6 0

2 years ago

Help me answer this 7 and 8

Minchanka [31]

Answer:

i dont know

Explanation:

i dont know

5 0

3 years ago