1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Helen [10]
3 years ago
5

A 24.0 g sample of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 3.85 g nh3. what is the percent

yield for this reaction given the reaction: n2(
g. 3h2(
g. --> 2nh3(g
Chemistry
2 answers:
Ierofanga [76]3 years ago
7 0
Sorry i dont know it is very hard to read and understand what u were trying to ask
agasfer [191]3 years ago
4 0

Answer:

6.62%

Explanation:

We have the following reaction

N_2+3H_2 \longrightarrow 2NH_3

A real yield of 3.85 g of NH_3 is obtained

To calculate the reaction yield in percentage we must calculate the mass that theoretically we must obtain

The reaction occurs in excess of hydrogen and 24.0g of N this means that when the nitrogen is finished the reaction will end

Nitrogen is our limit reagent

Molar mass of nitrogen 14 g/mol

This means that in 1 mol of nitrogen there is 14 g.

To calculate the moles of nitrogen in 24 g N we apply a simple rule of three

14 g N \longrightarrow 1 mol N\\24.0g N \longrightarrow x \\x=\frac{(24)(1)}{(14)} \\x= 1,71 mol N

According to stoichiometric coefficients 1 mol of N produces 2 moles of NH_3

N_2+3H_2 \longrightarrow 2NH_3

1.71 mol N how many moles of NH_3 will produce

1 mol N\longrightarrow2 mol NH_3\\1.71 mol N \longrightarrow x \\x\frac{(1.71)(2)}{1} \\x= 3.42 mol NH_3

Molar mass of NH_3 17 g / mol

This means that in 1 mol of NH_3 there are 17 g.

1 mol NH_3 \longrightarrow 17 g NH_3\\3.42 mol NH_3 \longrightarrow x\\x = \frac{(3.42)(17)}{1} \\x= 58.14 g NH_3

58.14g NH_3 corresponds to the theoretical yield of the reaction

To calculate the percentage yield of the reaction we use the following formula

\%= \frac{actual yield}{theoretical yield} .100\%\\\%=\frac{3.85}{58.14}. 100\%\\\%= 6.62\%

The percent yield for this reaction is 6.62%

You might be interested in
What is the volume(in liters at stp) of 2.50 mil of carbon monoxide
NeTakaya

The volume of one mole of substance is 22.4 L

8 0
3 years ago
Select the atoms that are likely to gain electrons to form anions:
aliina [53]

Answer:

c

Explanation:

4 0
3 years ago
When 38^88Sr decays to 34^84Kr, a(n) ______________ is emitted
navik [9.2K]

Answer:

The correct answer is - alpha particle and positron.

Explanation:

In this question, it is given that, 38^88Sr decays to 34^84Kr, which means there is an atomic number decrease by 4, 38 to 34, and atomic mass decreases by 4 as well 88 to 84.

A decrease in the atomic mass is possible only when there is an emission of the alpha particle as an alpha particle is made of 2 protons and 2 neutrons. If an atom emits an alpha particle, there is a change in atomic number as it decreases by two, and its mass number decreases by four.

So after the emission of an alpha particle, the new atom would be

38^88Sr=> 36^84X => 34^84Kr

so there is also two positron emission that leads to decrease in atomic number by one with each emission:

38^88Sr=> 2^4He+ 36^84X => 36^84X + 2(1^0β+) => 34^84Kr

Positron decay is the conversion of a proton into a neutron with the emission of a positron that causes the atomic number is decreased by one, which causes a change in the elemental identity of the daughter isotope.

3 0
3 years ago
Which observation indicates that the kinetic molecule theory has limited use for describing a certain gas
tekilochka [14]

Answer:

Please Mark as Brainliest!!!!!!!!!!

Explanation:

Increasing pressure is causing a smaller change in gas volume. The closeness of particles of gas and their low speeds allow intermolecular forces to become important at certain pressured and temperature

5 0
3 years ago
Which of elements would you expect to form the following with copper? Substitutional solid solution with complete solubility Sub
Kipish [7]

Answer:

Element Atomic Radius (nm) Crystal Structure Electronegativity Valence

Cu 0.1278 FCC 1.9 +2

C 0.071

H 0.046

O 0.060

Ag 0.1445 FCC 1.9 +1

Al 0.1431 FCC 1.5 +3

Co 0.1253 HCP 1.8 +2

Cr 0.1249 BCC 1.6 +3

Fe 0.1241 BCC 1.8 +2

Ni 0.1246 FCC 1.8 +2

Pd 0.1376 FCC 2.2 +2

Pt 0.1387 FCC 2.2 +2

Zn 0.1332 HCP 1.6 +2

The answers to the question are

(a) Copper will form substitutional solid solution with complete solubility with

Ni due to their very similar size, equal valency and similar electronegativities as well as Pd, and Pt but less likely with aluminium due to size and valency difference

(b) Copper will form substitutional solid solution of incomplete solubility with Ag, Al, Co, Cr, Fe, Zn

(c) Copper will form interstitial solid solution with

C, H, O due to the large difference between the size of copper atomic radius and the smaller atomic radii of C, H and O

Explanation:

Substitutional solid solution rules

the following are the Hume-Rothery rules for substitutional solid solutions:

1. Less than 15%difference between the atomic radius of the solute and solvent:

2. Similarity in the crystal structures of solute and solvent;

3. The valency of the solvent and solute must be similar before they can be said to be completely soluble in each other.

A lower valency metal is more likely to dissolve in one higher valency.

4. The electronegativities of the solute and solvent should be similar a wide variation in electronegativity will lead to the formation of intermetallic compounds rather than a solid solutions.

3 0
3 years ago
Other questions:
  • Why is it harder for the earth to recover from some natural disasters now?
    11·1 answer
  • Which type of bond will most likely be found in HBr?
    13·2 answers
  • High concentrations of ammonia (NH3), nitrite ion, and nitrate ion in water can kill fish. Lethal concentrations of these specie
    7·1 answer
  • Help please .......<br><br>​
    13·1 answer
  • (PLEASE ANSWER ASAP) Which choice is the smallest in mass?
    10·2 answers
  • Which of the following pairs are isotpes?
    5·1 answer
  • Suppose you have 11.0 mol of (CH4) and 9.0 mol of (O2) in a reactor. Calculate the largest amount of CO2 that could be produced
    10·1 answer
  • 6)
    13·1 answer
  • What is the molar mass of barium hydroxide
    14·1 answer
  • Calculate how many grams of the product form when 16.7 g of calcium metal completely reacts. Assume that there is more than enou
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!