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Westkost [7]
3 years ago
6

Why do noble gases have low freezing points?

Chemistry
1 answer:
Papessa [141]3 years ago
6 0
This is because, only <span> weak van der Waals forces or weak London dispersion forces are present between the atoms of the </span><span>noble gases.

Hope this helps!</span>
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Which two rocks are primarily composed of a mineral that bubbles with acid?
Marianna [84]
To most geologists, the term "acid test" means placing a drop of dilute (5% to 10%) hydrochloric acid on a rock or mineral and watching for bubbles of carbon<span> dioxide gas to be released. The bubbles signal the presence of carbonate minerals such as</span>calcite<span>, </span>dolomite<span>, or one of the minerals listed in Table 1.</span>
8 0
3 years ago
Consider four elements from Group 17: fluorine in the second period, chlorine in the third period, bromine in the fourth period,
Ghella [55]
<span>Fluorine
   For the group 17 elements (Halogens), the ionization energy decreases as the period increases (the elements become less reactive). And since of the 4 elements given, fluorine is from the lowest period, it has the highest ionization energy.</span>
7 0
3 years ago
Read 2 more answers
For the reaction of 2Na2O, if you have 18.0 g of Na, how many grams of O2 are needed for reaction?
geniusboy [140]

Answer: -

6.26 grams

Explanation: -

Atomic Mass of sodium Na = 23 gram

Mass of Na = 18 g

Atomic mass of oxygen O = 16 gram

Molar mass of O2 = 16 x 2 = 32 gram

The balanced chemical equation for the reaction is

4 Na + O2 -- > 2 Na 2 O

From the balanced chemical equation, we see

4 Na requires 1 O2

4 x 23 gram of Na requires 32 gram of O2

18 g of Na gives \frac{32 g O 2 x 18 g Na}{4 x 23 gram Na}

= 6.26 grams of O2

For the reaction of formation of Na2O, for 18.0 g of Na, 6.26 grams of O2 are needed for reaction.

8 0
3 years ago
The acid HOCl (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles
skelet666 [1.2K]

Answer:

k = \frac{[HOCl]^2}{[Cl]^2}

Explanation:

The equilibrium-constant expression is defined as the ratio of the concentration of products over concentration of reactants. Each concentration is raised to the power of their coefficient.

Also, pure solid and liquids are not included in the equilibrium-constant expression because they don't affect the concentration of chemicals in the equilibrium

The global reaction is:

2 HgO (s) + H₂O (l) +2 Cl₂ (g) ⇌ 2 HOCl (aq) + HgO⋅HgCl₂ (s)

Thus, equilibrium-constant expression is:

<em>k = \frac{[HOCl]^2}{[Cl]^2}</em>

You don't include HgO nor HgO⋅HgCl₂ because are pure solids nor water because is pure liquid.

I hope it helps!

4 0
3 years ago
How might differences in the volumes of individual reactants applied in a test influence a
Kay [80]

Converting the number of reactants affects the number of products produced in a chemical reaction. In a chemical reaction, the most effective atoms present in the reactants can come to be in the products. Mass is conserved in a chemical response.

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Catalysts always accelerate a chemical change. they're materials that participate in a chemical response by increasing the price of response however are unchanged via the reaction itself. Growing the eye of 1 or more reactants will frequently boom the charge of the response. This takes place due to the fact a higher interest in a reactant will motivate greater collisions of that reactant in a selected time period.

Learn more about chemical change here:-brainly.com/question/1222323

#SPJ9

3 0
2 years ago
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