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Sholpan [36]
3 years ago
12

Object is placed on a triple beam balance, and a student moves the sliders until it is balanced with the pointer resting at the

zero mark. When the pointer is resting, these are the positions of the sliders:
What is the mass of the object?

340.9 g
493.9 g
439.0 g
934.1 g

Chemistry
2 answers:
Ksivusya [100]3 years ago
7 0
The answer to this question is a
Sveta_85 [38]3 years ago
4 0
The answer is A I hope this helps :)
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Answer:

27.56 moles

Explanation:

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What is the density of a rectangle solid with dimensions
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5625000gm/cm^3

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Which of the following is a chemical change?
FromTheMoon [43]

<u>Answer:</u>

<em>Silver tarnishing as the silver metal reacts with sulphur is a chemical change.</em>

<u>Explanation:</u>

Tarnishing is the process of chemical change occurring on the surface of objects leading to corrosion or other defects on the surface. The remaining options like dilution, eroding is a physical change where the concentration of salt and rock particles will be decreased, respectively.

Similarly for soil drying also the concentration of water will be decreased leading to a physical change from wetty or dry soil.

But the last option which indicates tarnishing of silver metal on reaction with sulphur is a chemical process as the surface of silver metal will be reacting to sulphur and leads to lose of electrons which leads to corrosion of the surface or tarnishing of silver.

4 0
4 years ago
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Three clues that indicate chemical change <br>​
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Explanation:

temperature

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3 years ago
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You place 12.0 milliliters of water in a graduated cylinder. Then you add 15.0 grams of metal to the water and the new water lev
Marrrta [24]

Answer:

<h3>The answer is 7.85 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

volume = final volume of water - initial volume of water

volume = 13.91 - 12 = 1.91 mL

We have

density =  \frac{15}{1.91}  \\  = 7.853403141...

We have the final answer as

<h3>7.85 g/mL</h3>

Hope this helps you

8 0
3 years ago
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