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Grace [21]
3 years ago
9

PLEASE ANSWERRRRRRRRRRRRR

Chemistry
2 answers:
san4es73 [151]3 years ago
8 0

Answer:

A

Explanation:

There is no medium for the sound to travel through.

Arlecino [84]3 years ago
7 0

Answer:

Sound cannot travel through vacuum

Explanation:

I <em>COULD</em> be wrong, so don't absolutely count on me.

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Why are energy jobs on the rise? (Look at the world around you and think about the big picture.)
Allushta [10]

Answer:

c

Explanation:

The number of jobs in renewable energy worldwide increased in 2020, despite the huge economic disruptions caused by the pandemic, with the growing industry holding up better than fossil fuels. so which means reasourses are limited because of the pandemic and prises on thing rising.

8 0
3 years ago
Read 2 more answers
Which groups on the periodic table contain metalloids?
Firlakuza [10]
Groups 13-16, hope this helps!
4 0
4 years ago
Read 2 more answers
The chemical equation for the formation of ammonia is unbalanced.
galben [10]

Answer:

The answer to your question is 2 molecules

Explanation:

Unbalanced chemical reaction

                   H₂(g)   +   N₂(g)   ⇒   NH₃ (g)

         Reactants         Elements          Products

                2                      H                       3

                2                      N                       1

Balanced chemical reaction

                   3H₂(g)   +   N₂(g)   ⇒   2NH₃ (g)

         Reactants         Elements          Products

                6                      H                       6

                2                      N                       2

From the balanced chemical reaction we conclude that when 3 molecules of hydrogen react with one molecule of nitrogen, 2 molecules of ammonia will be formed.

4 0
4 years ago
Read 2 more answers
Choose the solvent below that would show the greatest boiling point elevation when used to make a 0.10 m nonelectrolyte solution
postnew [5]

Answer is: 1) ccl4, kb = 29.9°c/m, carbon tetrachloride has the greatest boiling point elevation.

The boiling point elevation is directly proportional to the molality of the solution according to the equation: ΔTb = Kb · b.

<span> ΔTb -  the boiling point elevation.
Kb - the ebullioscopic constant.
b - molality of the solution.
So the highest boiling poing elevation will be for solution with highest ebullioscopic constant because molality is the same.</span>

5 0
3 years ago
Read 2 more answers
g Identify limiting reactants (mole ratio method). Close Problem Identify the limiting reactant in the reaction of bromine and c
love history [14]

Answer:

(i) Cl₂ is a limiting reactant

(ii) The amount of excess reactant = 4.8 g

Explanation:

                             Br₂(g) + Cl₂(g) → 2 BrCl(g) ---------------------------(i)

Calculation of no. of moles

                            Moles of Br_{2}  = \frac{weight}{Molecular weight} = \frac{29.7}{160} =0.18

                            Moles of Cl_{2}  =\frac{11.2}{71}  = 0.15 mole

Using mole ratio method to find the limiting reactant and Excess reactant.

                            \frac{Mole}{Stoichiometry} (for Br_{2} ) = \frac{0.18}{1}  = 0.18

                            \frac{Mole}{Stoichiometry}(for Cl_{2}) =\frac{0.15}{1}=0.15

So Cl_{2} is a limiting reactant and Br₂ is excess reactant.

The amount of excess reactant = 0.18 - 0.15 = 0.03 mole = 4.8 g

5 0
4 years ago
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