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
LekaFEV [45]
4 years ago
5

What is the difference between the molar mass and the empirical formula mass of a compound? when are these masses the same, and

when are they different? when different, how is the molar mass related to the empirical formula mass?
Chemistry
1 answer:
fomenos4 years ago
8 0
Molar mass is the mass of one stable molecule of a compound, that cannot join with another molecule of the same kind to form a new one, while an empirical formula is the molecular formula in its simplest form. E.g. empirical formula of ethene is CH2while its molecular formula is C2H4.
You might be interested in
A balloon with a volume of 38.2 L at 91 psi is allowed to expand into a larger can with a total volume of 77.4 L. What is the pr
adelina 88 [10]

Answer:

  • <u>45 psi</u>

Explanation:

<u>1) Data:</u>

a) V₁ = 38.2 liter

b) P₁ = 91 psi

c) V₂ = 77.4 liter

d) P₂ = ?

<u>2) Formula:</u>

According to Boyle's law, at constant temperature, the pressure and volume of a fixed amount of gas are inversely related:

  • PV = constant ⇒P₁V₁ = P₂V₂

<u>3) Solution:</u>

  • Solve for the unknown: P₂ = P₁V₁ /v₂

  • Substitute the values: V₂ = 91 psi × 38.2 liter / 77.4 liter = 44.9 9si ≈ 45 psi.
7 0
4 years ago
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Cr2 ] = 0.892 M and [Fe2 ] = 0.0150
Effectus [21]

<u>Given:</u>

Concentration of Cr2+ = 0.892 M

Concentration of Fe2+ = 0.0150 M

<u>To determine:</u>

The cell potential, Ecell

<u>Explanation:</u>

The half cell reactions for the given cell are:

Anode: Oxidation

Cr(s) ↔ Cr2+(aq) + 2e⁻                E⁰ = -0.91 V

Cathode: Reduction

Fe2+ (aq) + 2e⁻ ↔ Fe (s)              E⁰ = -0.44 V

------------------------------------------

Net reaction: Cr(s) + Fe2+(aq) ↔ Cr2+(aq) + Fe(s)

E°cell = E°cathode - E°anode = -0.44 - (-0.91) = 0.47 V

The cell potential can be deduced from the Nernst equation as follows:

Ecell = E°cell - (0.0591/n)log[Cr2+]/[Fe2+]

Here, n = number of electrons = 2

Ecell = 0.47 - 0.0591/2 * log[0.892]/[0.0150] = 0.418 V

Ans: The cell potential is 0.418 V

8 0
3 years ago
Read 2 more answers
In the Cannizzaro reaction of benzaldehyde ( aka solventless disproportionation of benzaldehyde in the presences of a strong bas
choli [55]

Answer:

Reaction products are shown below

Explanation:

  • In cannizaro reaction, benzaldehyde produces benzoic acid and benzyl alcohol through disproportion.
  • Here, a hydroxyl group first gives a nucleophilc addition at carbonyl center of benzaldehyde.
  • Then a hydride transfer takes place to another molecule of benzaldehyde
  • Thus, benzoic acid and benzyl alcohol are produced.
  • Full reaction mechanism has been shown below

8 0
4 years ago
Write and balance the combustion equation for propane. (Propane is combusted in the presence of oxygen to produce carbon dioxide
disa [49]

Answer:

363.64g of oxygen would be required.

Explanation:

1) Write and balance the combustion equation for propane.

Propane + Oxygen --> carbon dioxide + water

C3H8 + O2 --> CO2 + H2O

Upon balancing, we have;

C3H8 + 5O2 --> 3CO2 + 4H2O

2) How many grams of oxygen are required to burn 200 grams of propane.

From the reaction;

Propane = (3 * 12) + (8 * 1) = 44

Oxygen = (5 * 16) = 80

80 grams of oxygen is required to combust 44g of propane.

80 = 44

x = 200

x = ( 80 * 200 ) / 44

x = 363.64g

6 0
4 years ago
Read 2 more answers
With solutions of strong acids and strong bases, the word strong refers to
Damm [24]

Answer:

The strong refers to how dangerously powerful the solution is

4 0
3 years ago
Other questions:
  • Pls help me pls pls
    10·2 answers
  • Plzzzzzzzzzzzzzzzz help
    5·1 answer
  • How many valence electrons configuration of oxygen?
    12·1 answer
  • Please refer to photo...
    6·1 answer
  • Which statement about moons is NOT true?*
    11·1 answer
  • Pls help me on this question????
    5·1 answer
  • What is an an example of a chemical reaction?
    9·2 answers
  • 1. Which of the following would be an example of spontaneous<br> generation?
    6·1 answer
  • Look at the chemical equation below.
    12·1 answer
  • When something is used only once and then thrown away it is said to be
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!