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-BARSIC- [3]
2 years ago
8

What is empirical formula if compound consists of 21.2%N, 6.1%H, 24.2% and 48.5%O?

Chemistry
1 answer:
vichka [17]2 years ago
5 0

Answer:

                      Empirical Formula  =  N₂H₈SO₄   Or    (NH₄)₂SO₄

Explanation:

Step 1: Calculate Moles of each Element;

                     Moles of N  =  %N ÷ At.Mass of N

                     Moles of N  = 21.20 ÷ 14.01

                     Moles of N  =  1.5132 mol

                     Moles of H  =  %H ÷ At.Mass of H

                     Moles of H  = 6.10 ÷ 1.01

                     Moles of H  =  6.0396 mol

                     Moles of S  =  %S ÷ At.Mass of S

                     Moles of S  = 24.20 ÷ 32.06

                     Moles of S  =  0.7548 mol

                     Moles of O  =  %O ÷ At.Mass of O

                     Moles of O  = 48.50 ÷ 16.0

                     Moles of O  =  3.0312 mol

Step 2: Find out mole ratio and simplify it;

               N                                        H                                     S

           1.5132                              6.0396                             0.7548

    1.5132/0.7548                  6.0396/0.7548                 0.7548/0.7548

              <u>2</u>                                        <u>8</u>                                       <u>1</u>

                                                    O

                                                  3.0312

                                           3.0312/0.7548

                                                     <u>4</u>

Result:

       Empirical Formula  =  N₂H₈SO₄   Or    (NH₄)₂SO₄

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Answer:

The essence including its particular subject is outlined in the following portion mostly on clarification.

Explanation:

  • The energy throughout the campfire comes from either the wood's latent chemical energy until it has been burned to steam up and launch up across the campfire. The electricity generation for something like a campfire seems to be in the context including its potential chemical energy which is contained throughout the firewood used only to inflame the situation.
  • The energy output seems to be in the different types of heat energy radiating across the campfire, laser light generated off by the blaze, and perhaps a little number of electrical waves, registered throughout the firewood cracking whilst they combust throughout the blaze.

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1 year ago
In the reaction of nitrogen gas with oxygen gas to produce nitrogen oxide, what is the effect of adding more oxygen gas to the i
Alborosie
<h3>Answer:</h3>

The Equilibrium would shift to produce more NO

<h3>Explanation:</h3>

The reaction is;

N₂(g) + O₂(g) ⇆ 2NO(g)

  • When a reaction is at equilibrium then the forward reaction rate will be equivalent to the reverse reaction rate. Additionally, the concentration of the reactants and products are the same.
  • From Le Chatelier's principle, additional reactants favor the formation of more products while additional products favor the formation of more reactants.
  • For example, when more oxygen is added then more Nitrogen (II) oxide will be formed.
  • Oxygen is a reactant and when increased it favors forward reaction which leads to the formation of more NO which is the product.

3 0
2 years ago
which factors are needed to determine the amount of heat absorbed by an aluminum cube after it is warmed? check all that apply
Deffense [45]

Answer:

Explanation:

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1 year ago
Write the expression for the equilibrium constant Kp for the following reaction.Enclose pressures in parentheses and do NOT writ
maxonik [38]

<u>Answer:</u> The expression for K_p is written below.

<u>Explanation:</u>

Equilibrium constant in terms of partial pressure is defined as the ratio of partial pressures of the products and the reactants each raised to the power their stoichiometric ratios. It is expressed as K_p

For a general chemical reaction:

aA+bB\rightleftharpoons cC+dD

The expression for K_p is written as:

K_p=\frac{P_{C}^c\times P_{D}^d}{P_{A}^a\times P_{B}^b}

The partial pressure for solids and liquids are taken as 1.

For the given chemical equation:

NH_4HS(s)\rightleftharpoons NH_3(g)+H_2S(g)

The expression for K_p for the following equation is:

K_p=\frac{(P NH_3)\times (P H_2S)}{(P NH_4HS)}

The partial pressure of NH_4HS will be 1 because it is solid.

So, the expression for K_p now becomes:

K_p=\frac{(P NH_3)\times (P H_2S)}{1}

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5 0
2 years ago
The pka of hf is 3.2 determine the pkb of hf?
Julli [10]

Well, first we must remember that

pK_{a}+pK_{b}=14

This is because

K_{a}*K_{b}=10^{-14}

-log(K_{a}*K_{b})=-log(10^{-14})\\-logK_{a}+-logK_{b}=-log(10^{-14})\\pK_{a}+pK_{b}=14

So then

pK_{b}=14-pK_{a}=14-3.2=1.8

7 0
2 years ago
Read 2 more answers
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