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ikadub [295]
3 years ago
8

Arrange the elements in order of increasing atomic radlus. Use the periodic table

Chemistry
2 answers:
Alex777 [14]3 years ago
6 0

Answer:

Oxygen, Selenium, Calcium, Barium.

Explanation:

for plato user :)

nlexa [21]3 years ago
3 0
Largest to smallest: barium, calcium, selenium, oxygen
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Whch is more acidic, a solution with a pH of 2 or 5
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A solution with a pH of 2

Explanation:

The lower a pH is in a liquid, the more acidic it is. 7 is the neutral pH for a liquid. We usually drink around that pH for water. A pH higher than 7 expresses that the liquid is a base.

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Sn + 2Ha -> SnCl2 + H2
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The formation of nitric oxide (N2(g) + O2(g) Imported Asset 2NO(g)) has a Kc value of 4.7 × 10-31. A classmate claims that this
riadik2000 [5.3K]
Answer is: her reasoning is flawed, because <span>Kc is very small, so the concentration of nitric(II) oxide is also very small. </span>

Balanced chemical reaction: N₂(g) + O₂(g) ⇄<span> 2NO(g).
</span>The equilibrium constant<span> (Kc) is a ratio of the concentration of the products (in this reaction nitrogen(II) oxide) to the concentration of the reactants (in this reaction nitrogen and oxygen):
</span>Kc = [NO]² / [N₂] · [O₂].
Kc = 4.7·10⁻³¹.
If we take equilibrium concentration of oxygen and nitrogen to be 1 M:
[N₂] = [O₂] = 1 M.
[NO] = √[N₂] · [O₂] · Kc.
[NO] = 6.855·10⁻¹⁶ M; equilibrium concentration of nitric oxide.
5 0
4 years ago
Find the vapor pressure of a water solution in which the
zheka24 [161]

Answer:

The vapor pressure in solution is 0,0051 atm

Explanation:

This is the formula for vapor pressure lowering, the colligative property.

P vapor = Pressure sv pure . Xsv

Where Xsv is data.

Xsv means Molar fraction (moles solvent/total n° moles)

Vapor pressure of water, pure is 17.5 mmHg

P vapor = 0,0313 atm . 0163

P vapor in solution = 0,0051 atm

Molar fraction does not have units

A solution will have less vapor pressure than that observed in the pure solvent.

5 0
3 years ago
Look at the diagram. Which shows the correct arrangement of electrons in a hydrogen molecule?
skelet666 [1.2K]
It’s diagram because hydrogen has one proton and you’re not talking about ions so it needs another electron to stable itself
8 0
3 years ago
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