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anyanavicka [17]
3 years ago
11

What determines the length of each period in the periodic table?

Chemistry
1 answer:
4vir4ik [10]3 years ago
3 0
The number of electrons that can occupy the sub levels being filled by that period
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MgO + 2 LiCl → MgCl2 + Li2O<br><br> Are all the elements balanced?
4vir4ik [10]
Yes. There are the same number on either side of the reaction.
6 0
3 years ago
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Which is a characteristic of mixtures ?
sattari [20]

The characteristics of mixtures are:

a) they are made up of two of more substances

b) the two substances can be separated by physical means

c) there are two kinds of mixtures : homogenous and heterogenous

d) homogenous mixtures do not have any physicaly distinguished boundary  

6 0
4 years ago
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In a balanced equation, coefficients always represent
steposvetlana [31]

Answer:

D. The number of atoms present

Explanation:

In a balanced equation, coefficients always represent the number of atoms present.

8 0
3 years ago
Which of the following molecules would be the best hydrogen bond donor?
leva [86]

Answer: Option (d) is the correct answer.

Explanation:

When a hydrogen atom comes in contact with an electronegative atom then it results in the formation of a chemical bond.

More is the electronegativity of combining atom, more stronger will be the bond with hydrogen atom. As a result, the compound formed will not easily give up hydrogen atom upon dissociation.

Whereas less is the electronegativity of atom combining with hydrogen atom, easily it will donate the hydrogen atom upon dissociation.

Since, out of the given option sulfur (S) atom has low electronegativity as compared to oxygen and nitrogen atom.

Hence, CH_{3}SH will easily donate hydrogen atom.

Thus, we can conclude that CH_{3}SH molecule would be the best hydrogen bond donor.

4 0
3 years ago
A solution is made by dissolving 3.8 moles of sodium chloride (NaCl) in 185 grams of water. If the molal boiling point constant
S_A_V [24]

The molality of the solution can be defined as moles of solute per kilogram of solvent.

Molality=3.8 moles/0.185 kg

=20.54 molal

The change in the temperature can be calculated as the product of boiling point constant and molality.

ΔTb=Kb×m=0.51 °C/m×20.54 m=10.47 °C.

The boiling point of the solution will be = 100 °C + 10.47 °C

=110.47 °C

3 0
3 years ago
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