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
Annette [7]
3 years ago
14

What mass of oxygen is required to produce 8.0g of magnesium oxide from 4.8g if magnesium

Chemistry
2 answers:
Bingel [31]3 years ago
7 0
3.2
hope this is super helpful but always remember to check your notes

sleet_krkn [62]3 years ago
3 0

Answer:-

3.2 grams

Explanation:-

The chemical formula for Magnesium Oxide is MgO.

The balanced chemical equation for this reaction is

2Mg + O2 --> 2MgO

Atomic weight of Mg = 24 grams

Molecular weight of oxygen gas O2 = 16 x 2 = 32 grams.

Molecular weight of MgO = 24 x 1 + 16 x 1 = 40 grams

From the balanced chemical equation we see

To produce 2 MgO we require 1 O2.

∴ To produce 2 x 40 grams of MgO we require 32 grams of Oxygen.

To produce 8 grams of MgO we require 32 x 8 / ( 2 x 40) grams of oxygen

= 3.2 grams of oxygen

You might be interested in
Explain why one prevents erosion and the other makes erosion worse.​
Studentka2010 [4]
Eroded sediments from further upstream clogged Jakarta’s rivers and canals, causing them to overflow. Similar erosion-related floods have occurred in many other countries, such as Colombia, India, the Philippines and Democratic Republic of the Congo.
6 0
3 years ago
The diagram shows an image produced by a lens.
Katarina [22]

Answer:

I think the answer is X if wrong i´m sorry

Explanation:

7 0
3 years ago
Read 2 more answers
The distance from Santa Maria to Los Alamos is 16.25 mi. what is the distance in meters?
Radda [10]

Answer:

26,167.47m

Explanation:

Problem:

We are to solve this problem using dimensional analysis:

  from the given conversion factors-

      0.621mi = 1.00km

       1km = 1000m

From the problem, we are groing from miles to metres:

      16.25mi x \frac{1km}{0.621mi} x \frac{1000m}{1km}

The mi will cancel out and also the km. This leaves us with the desired unit we want which is meters, m.

       =  26,167.47m

7 0
3 years ago
Calculate the standard cell potential at 25 ∘c for the reaction x(s)+2y+(aq)→x2+(aq)+2y(s) where δh∘ = -793 kj and δs∘ = -319 j/
QveST [7]
First we will calculate free energy change:
ΔG₀ = ΔH₀ - (T * ΔS₀)
        = - 793 kJ - (298 * - 0.319 kJ/K) = - 698 kJ
We know the relation between free energy change and cell potential is:
ΔG₀ = - n F E⁰ where
F = Faraday's constant = 96485 C/mol
n = 2 (given by equation that the electrons involved is 2)
ΔG₀ = - 2 x 96485 x E⁰
- 698 kJ = - 2 x 96485 x E⁰
E⁰ = (698 x 1000) / (2 x 96485) = 3.62 volts   
 
5 0
3 years ago
What is the bond energy required to break one mole of carbon-carbon bonds​
ArbitrLikvidat [17]

Answer:

<h2><u><em>100 kcal of bond energy</em></u></h2>

<u><em></em></u>

8 0
3 years ago
Other questions:
  • How many atoms are in an oxygen molecule (O 2 ) ?
    10·1 answer
  • What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10–10 M? Use mc015-2.jpg. –10.1 –9.90 7.90 9.90
    14·2 answers
  • What elements are not balanced in the equation MgO + 2 LiCl = MgCl2 Li2O
    15·2 answers
  • How does chemical change affect the composition of matter
    14·1 answer
  • Which of the following equations is balanced?
    11·1 answer
  • Ethyl alcohol, CH3CH2OH2, is misconception with octane, C8H18, but plenty alcohol, CH3CH2CH2CH2CH3OH3, is soluble in water only
    10·1 answer
  • in an experiment forest, a sample of leaves is weighed over a one year period and is found to lose 83% of its mass. assuming fir
    8·1 answer
  • What is an example of a neutral ion.
    12·1 answer
  • In the following list, only is not an example of a chemical reaction
    9·1 answer
  • Write down a balanced chemical equation for a neutralizing reaction of a titration
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!