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Salsk061 [2.6K]
3 years ago
10

If this atom has a balanced charge, how many protons would you expect to find in this atom?

Chemistry
2 answers:
uranmaximum [27]3 years ago
6 0
The number of protons would be equivalent to the number of electrons if the net charge on the atom is 0.
Strike441 [17]3 years ago
3 0

Answer:

If you are in k12 then I think the answer you are looking for is 6

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11. Assuming that the gases are ideal, calculate the amount of work done (joules) in each of the following reactions at 25 degre
gayaneshka [121]

<u>Answer:</u>

<u>For a:</u> Work done for the given reaction is 2477.572 J.

<u>For b:</u> Work done for the given reaction is 0 J

<u>Explanation:</u>

To calculate the work done for the reaction, we use the equation:

W=-P\Delta V

Ideal gas equation follows:

PV=nRT

Relating both the above equations, we get:

W=-\Delta n_gRT     ......(1)

where,

\Delta n_g = difference in number of moles of products and reactants = n_g_{(products)}-n_g_{(reactants)}

R = Gas constant = 8.314 J/K.mol

T = temperature = 25^oC=[273+25]K=298K

  • <u>For a:</u>

The chemical reaction follows:

4HCl(g)+O_2(g)\rightarrow 2Cl_2(g)+2H_2O(g)

\Delta n_g=4-5=-1

Putting values in equation 1, we get:

W=-(-1mol)\times (8.314J/K.mol)\times 298K=2477.572J

Hence, work done for the given reaction is 2477.572 J.

  • <u>For b:</u>

The chemical reaction follows:

2NO(g)\rightarrow N_2(g)+O_2(g)

\Delta n_g=2-2=0

Putting values in equation 1, we get:

W=-(0mol)\times (8.314J/K.mol)\times 298K=0J

Hence, work done for the given reaction is 0 J.

3 0
3 years ago
How many hydrogen atoms are in 7.80 mol of ammonium sulfide?
Alexus [3.1K]

The number  of hydrogen atoms that are in 7.80 moles of ammonium sulfide are  3.756 x 10^25  atoms


<u>calculation</u>

Step  1:  calculate  the  moles of H  in  (NH4)2S

 since there are 8 atoms of  H in (NH4)2S  the moles of

   H =  8 x7.80 =  62.4  mole

 Step  2: use of Avogadro's law  constant  to  determine the number  of  H atom

          that is 1 mole = 6.02 x10^23 atoms

                     62.4 moles=?  atoms

  • cross  multiplication

= [ 62.4  x 6.02 x10^23]/  1 mole= 3.756  x10^25    atoms

7 0
3 years ago
Read 2 more answers
Which occurs when a warm fluid cools down?
amid [387]

Answer:

option A is correct answer of this question

hope it helps and your day will be full of happiness

5 0
3 years ago
Read 2 more answers
What does the bottom number within each box of the periodic table refer to? How can it be used to determine the number of neutro
geniusboy [140]
The number above the symbol is the atomic mass (or atomic weight). This is the total number of protons and neutrons in an atom. The number below the symbol is the atomic number and this reflects the number of protons in the nucleus of each element's atom. Every element has a unique atomic number.
4 0
3 years ago
Find the empirical formula of the following compounds:
Aneli [31]

The empirical formula of the following compounds 0.903 g of phosphorus combined with 6.99 g of bromine.

<h3>What is empirical formula?</h3>

The simplest whole number ratio of atoms in a compound is the empirical formula of a chemical compound in chemistry. Sulfur monoxide's empirical formula, SO, and disulfur dioxide's empirical formula, S2O2, are two straightforward examples of this idea. As a result, both the sulfur and oxygen compounds sulfur monoxide and disulfur dioxide have the same empirical formula.

<h3>How to find the empirical formula?</h3>

Convert the given masses of phosphorus and bromine into moles by multiplying the reciprocal of their molar masses. The molar masses of phosphorus and bromine are 30.97 and 79.90 g/mol, respectively.

Moles phosphorus = 0.903 g phosphorus \frac{mol phosphorus}{ 30.97 g phosphorus}= 0.0293 mol

Moles bromine 6.99 g bromine\frac{mol bromine}{79.90 g bromine}=0.0875 mol

The preliminary formula for compound is P0.0293Bro.0875. Divide all the subscripts by the subscript with the smallest value which is 0.0293. The empirical formula is P1.00Br2.99 ≈ P₁Br3 or PBr3

To learn more about empirical formula visit:

brainly.com/question/14044066

#SPJ4

8 0
1 year ago
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