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
ivolga24 [154]
3 years ago
7

Determine the percent yield if 155g of Hydrogen should have been produced,

Chemistry
1 answer:
Lyrx [107]3 years ago
7 0

Answer:

Percent yield of hydrogen is 87.096%

Explanation:

Theoretical yield = 155g

Experimental yield = 135g

% yield = [experimental yield / theoretical yield] * 100

% yield = (135 / 155) * 100

% yield = 0.87096 * 100

% yield = 87.096 %

The percentage yield of hydrogen is 87.096%

You might be interested in
Which two formulas represent compounds
SVEN [57.7K]

CO2 ; H20- They are the only ones that, on both sides, combined with another element and bonding of atoms

4 0
3 years ago
A 10​-liter ​[l] flask contains 1.4 moles​ [mol] of an ideal gas at a temperature of 20 degrees celsius ​[degrees​c]. What is th
Lynna [10]

The pressure in the flask is 3.4 atm.

<em>pV</em> = <em>nRT </em>

<em>T</em> = (20 + 273.15) K = 293.15 K

<em>p</em> = (<em>nRT</em>)/<em>V</em> = (1.4 mol × 0.082 06 L·atm·K⁻¹mol⁻¹ × 293.15 K)/10 L = 3.4 atm

4 0
3 years ago
Read 2 more answers
What does atomic mass on the periodic table represent?
neonofarm [45]
The atomic mass on the periodic table represents the sum of number of protons and number of neutrons.

Atomic mass = Number of protons + number of neutrons

Hope this helps!
6 0
3 years ago
B. For the following questions, use the reaction NO2(g) N2(g) + O2(g), with ΔH = –33.1 kJ/mol and ΔS= 63.02 J/(mol·K).
Troyanec [42]

Answer:

I. Kindly, see the attached image.

II. The reaction is exothermic.

III. - 51.88 kJ/mol.

IV. The reaction is spontaneous.

Explanation:

I. Draw a possible potential energy diagram of the reaction. Label the enthalpy of the reaction.

  • Since the sign of ΔH is negative, the reaction is exothermic reaction.

In an exothermic reaction, the energy of the reactants is higher than that of the products.

<u><em>Kindly see the attached image to show you the potential energy diagram of the reaction.</em></u>

     

<em>II. Is the reaction endothermic or exothermic? Explain your answer.</em>

  • The reaction is exothermic reaction.
  • The sign of ΔH indicates wither the reaction is endothermic or exothermic one:

If the sign is positive, the reaction is endothermic.

If the sign is negative, the reaction is exothermic.

Herein, <em>ΔH = - 33.1 kJ/mol, </em>so the reaction is exothermic.

<em>III. What is the Gibbs free energy of the reaction at 25°C? </em>

∵ ΔG = ΔH - TΔS.

Where, ΔG is the Gibbs free energy change (J/mol).

ΔH is the enthalpy change (ΔH = - 33.1 kJ/mol).

T is the temperature (T = 25°C + 273 = 298 K).

ΔS is the entorpy change (ΔS = 63.02 J/mol.K = 0.06302 J/mol.K).

<em>∴ ΔG = ΔH - TΔS</em> = (- 33.1 kJ/mol) - (298 K)(0.06302 J/mol.K) = <em>- 51.88 kJ/mol.</em>

IV. Is the reaction spontaneous or nonspontaneous at 25°C?

The sign of ΔG indicates the spontaneity of the reaction:

If ΔG < 0, the reaction is spontaneous.

If ΔG = 0, the reaction is at equilibrium.

If ΔG > 0, the reaction is nonspontaneous.

Herein, <em>ΔG = - 51.88 kJ/mol, </em>so the reaction is spontaneous.

7 0
3 years ago
Write the formula for each of the following compounds: a. sulfur difluoride b. sulfur hexafluoride c. sodium dihydrogen phosphat
Bogdan [553]

Answer:

a. sulfur difluoride SF₂

b. sulfur hexafluoride SF₆

c. sodium dihydrogen phosphate NaH₂PO₄

d. lithium nitride Li₃N

e. chromium(III) carbonate Cr₂(CO₃)₃

f. tin(II) fluoride SnF₂

g. ammonium acetate NH₄(CH₃COO)

h. ammonium hydrogen sulfate NH₄(HSO₄)

i. cobalt(III) nitrate Co(NO₃)₃

j. mercury(I) chloride Hg₂Cl₂

k. potassium chlorate KClO₃

l. sodium hydride NaH

Explanation:

The names give us information about the composition. First, we mention the cation  and then the anion. In the formula, we follow the same order. Each part has a charge but the resulting compound is electrically neutral.

7 0
3 years ago
Other questions:
  • This substance should never be used to put out a petrol or oil fire
    15·1 answer
  • Only two stable isotopes of chlorine exist. 35Cl has a mass of 34.96885 amu and 37Cl has a mass of 36.9659 amu. Given that the a
    12·1 answer
  • I make my cup of coffee in the morning by pouring boiling water over ground-up coffee beans held in a special piece of paper and
    6·1 answer
  • Which colorless and odorless gas, produced by radioactive decay of Uranium-238, is considered to be a cancer-causing agent?
    10·1 answer
  • Structure can affect the Ka values for related acids. In the boxes below, draw the complete Lewis structure for a single ion of
    10·1 answer
  • How many moles are equal to 5.82 x 10^23 atoms of tungsten (w)
    8·2 answers
  • Dorothy left a frozen juice pop out on the counter. When she returned, the juice pop had melted into a liquid. Which of the foll
    13·1 answer
  • You need 150g of pure lithium for an experiment you're doing. You have 675g of lithium oxide (Li2O). Can you extract all the lit
    14·1 answer
  • How intermolecular forces are broken during evaporation?
    9·2 answers
  • What is the molarity of a Sodium Chloride solution if 86.00g of NaCl was dissolved in enough water to form 1000.mL of solution?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!