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
Setler79 [48]
3 years ago
11

Which elements are not balanced in this equation MgO + 2 LiCl = MgCl2 + Li2O

Chemistry
2 answers:
nikitadnepr [17]3 years ago
8 0
B All elements are balanced
ruslelena [56]3 years ago
6 0
This question is about stoichiometry, the ratio of compounds in a reaction. The most important thing that comes out of physics relating to this is the principle of Conservation of Energy, that is energy cannot be created or destroyed, only transferred from one form to another.

This can mean a lot of different things depending on the context, usually to explain why perpetual motion is inpossible - energy transfers are never 100% efficient and as energy cannot be expressly created, the useful energy in an isolated system must dwindle (if you are interested that is called entropy).

But in a chemistry context, for stable atoms such as these where matter remains matter and energy remains energy, it leads to the principle of Conservation of Mass. That is to say there are as many atoms of each type to start with as there are to finish with.

This is why balancing is so important. You wouldn't react two oxygen atoms together (hypothetically) to form two O2 molecules because that would start with 2 atoms and end with 4. Similarly you wouldn't (excluding nuclear fusion reactions) react two magnesium atoms together to produce a Cl2 molecule because the mass has changed (an Mg has a different mass to a Cl).

Taking note of the number of each type of atom on each side of the equation, we find there is the same number always. This shows the equation is balanced. Conservation of Mass, and by extension Conservation of Energy, is satisfied so the answer is B.
You might be interested in
Which represents the self ionization of water at 25 degrees
gayaneshka [121]
This question comes with four answer choices:

<span>A. H2O + H2O ⇄ 2H2 + O2

B. H2O + H2O⇄  H2O2 + H2

C. H2O + H2O ⇄ 4H+ + 2O2-

D. H2O + H2O ⇄  H3O+ + OH-

Answer: option </span><span>D. H2O + H2O ⇄  H3O+ + OH-

(the +sign next to H3O is a superscript, as well as the - sing next to OH)

Explanation:

The self-ionization of water, or autodissociation, produces the two ions H3O(+) and OH(-). The presence of ions is what explain the electrical conductivity of pure water.

</span><span>In this, one molecule of H2O loses a proton (H+) (deprotonates) to become a hydroxide ion, OH−. Then, he <span>hydrogen ion, H+</span>, immediately protonates another water molecule to form hydronium, H3O+.
</span>
7 0
3 years ago
Forensic science is the application of science to what field?
adell [148]
B.) Criminal Justice
8 0
3 years ago
Read 2 more answers
Calculate the amount of formula units in 2.10 moles of MgCl₂
Eva8 [605]
MgqI% = the formula and mass for H20 and that should be your answer for water
5 0
3 years ago
In france grapes are 1.83 euros per kilogram. What is the cost of grapes in dollars per pound if the exchange rate is 1.40 dolla
worty [1.4K]

In france grapes are 1.83 euros per kilogram. What is the cost of grapes in dollars per pound if the exchange rate is 1.40 dollars per euro

1.83 euros x 1.40 = 2.56 dollars

1 pound = 0.454 kilogram

1.83 euros per kilogram = 2.56 x 0.454 = 1.16 dollars per pound

6 0
3 years ago
Which of the following BEST states the Law of Conservation of Matter? *
Nookie1986 [14]

Answer:

A. The total mass of the reactants in a reaction equals the total mass of the product(s).

Explanation:

The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction.

6 0
2 years ago
Other questions:
  • Calculate the volume in liters of a 0.360 mol/l barium acetate solution that contains 100.g of barium acetate (Ba(C2H3O2)2) . Ro
    11·1 answer
  • H3c6h5o7(aq) + 3nahco3(aq) → 3co2(g) + 3h2o(l) + na3c6h5o7(aq) calculate the number of grams of baking soda (nahco3; molar mass
    10·1 answer
  • When the equation kclo3(s) → kcl(s) + o2(g) is balanced, the coefficient of kclo3 is _____?
    7·1 answer
  • Please explain how to find each answer solution.
    5·1 answer
  • The structure of carbon dioxide using dots and crosses​
    14·1 answer
  • What is the theoretical yield of cyclohexene (in grams) that could be formed from 0.105 moles of cyclohexanol and 0.0444 moles o
    6·1 answer
  • Question 10 of 10
    11·1 answer
  • 35. 124.31 g of silver nitrate reacts with 52.89 g of sodium chloride.
    14·1 answer
  • Which statement is false when describing magnetism and electricity
    8·2 answers
  • Electrolysis Is One of the Modern Technologies in Architecture’ Prepare an Investigatory Report That Supports the Statement”.​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!