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scoundrel [369]
3 years ago
5

If the smallest markings on a ruler are one tenth (1/10) of a centimeter, which of the following measurements could be recorded

using that ruler?
A. 2.5 cm
B. 2.52 cm
C. 2.520 cm
D. 2.5200 cm
Chemistry
2 answers:
makkiz [27]3 years ago
4 0
I think it should be A 
Alenkinab [10]3 years ago
4 0

Answer:

The correct answer is the option: A. 2.5 cm

Explanation:

Hello! Let's solve this!

In a rule we see that it is divided into centimeters, they can be 15 centimeters, 20 centimeters, etc.

It is very easy to see the two centimeters, which are the largest lines. To see after two, we count the smallest stripes and we can reach 2.5 centimeters. But no more than that.

We conclude that the correct answer is the option: A. 2.5 cm

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For each pair, choose the compound with the smaller lattice energy, and explain your choice: (b) K₂O or K₂S.
dlinn [17]

the compound with the smaller lattice energy is potassium sulphide here the size of the molecule play a important role

The quantity of energy released by the electrostatic attraction of oppositely charged ions is known as lattice energy (L.E). The ion's size and charge affect the lattice energy.

lattice energy is inversely proportional to   size of ion and directly proportional to charge of the ion. They are each charged equally that is plus two and minus two However, because the Sulphur is larger in size  and the oxygen is lesser in this case, The lattice energy of potassium oxide is larger  the lattice energy of potassium sulphide  is smaller.

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5 0
1 year ago
Fill in the coefficients that will balance the following reaction:
Burka [1]

Answer:

a0 = 2

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Therefore the balanced chemical equation will be;

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