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
VashaNatasha [74]
3 years ago
11

Law of conservation of mass to explain why a chemical equation must be balanced?

Chemistry
2 answers:
SOVA2 [1]3 years ago
7 0
Chemical equations must always balance due to the principles outlined in The Law Of Conservation of Matter. This scientific law states that matter cannot be created out of nothing nor can it be destroyed.
MA_775_DIABLO [31]3 years ago
7 0

<u>Answer:</u>

<em>Law of conservation of mass state that mass can neither be created nor be destroyed.  Also chemical reaction of the sum is outlined in The Law Of Conservation of Matter.</em>

<u>Explanation:</u>

In a chemical reaction the sum of the masses of the products will be equal to the sum of the masses of the reactants. <em>Thus a chemical reaction conserves the total mass.</em> For this law to be valid the system where the reactions take place should be closed.

It has to be properly ensured that there is no transfer of energy or mass between the system and its outer environment. <em>If that happens the sum of masses of products differs from that of the reactants due to the gain or loss of matter to surroundings.  </em>

You might be interested in
Which igneous rock is an extrusive rock?​
maria [59]
Basalt, rhyolite, andesite, and obsidian could all be answers.
6 0
3 years ago
What is the atomic number? what is the atomic mass (a.k.a. mass number?
Oksanka [162]
Is the number of protons in an atom, or the total positive charge of an atom.
3 0
3 years ago
Which structure does a plant cell have that an animal cell does not have?
satela [25.4K]

Answer:

cell wall

Explanation:

plants are the only cells that have cell walls. no other type of organism have a cell wall

6 0
3 years ago
For a process Arightwards harpoon over leftwards harpoonB, at 25 °C there is 10% of A at equilibrium while at 75 °C, there is 80
Lostsunrise [7]

This question is describing the following chemical reaction at equilibrium:

A\rightleftharpoons B

And provides the relative amounts of both A and B at 25 °C and 75 °C, this means the equilibrium expressions and equilibrium constants can be written as:

K_1=\frac{90\%}{10\%}=9\\\\K_2=\frac{20\%}{80\%}  =0.25

Thus, by recalling the Van't Hoff's equation, we can write:

ln(K_2/K_1)=-\frac{\Delta H}{R}(\frac{1}{T_2} -\frac{1}{T_1} )

Hence, we solve for the enthalpy change as follows:

\Delta H=\frac{-R*ln(K_2/K_1)}{(\frac{1}{T_2} -\frac{1}{T_1} ) }

Finally, we plug in the numbers to obtain:

\Delta H=\frac{-8.314\frac{J}{mol*K} *ln(0.25/9)}{[\frac{1}{(75+273.15)K} -\frac{1}{(25+273.15)K} ] } \\\\\\\Delta H=4,785.1\frac{J}{mol}

Learn more:

  • brainly.com/question/10038290
  • brainly.com/question/19671384
5 0
3 years ago
What does it mean when someone is impartial?​
larisa86 [58]

Answer:

treating everyone fairly

Explanation:

making or treating every fair as possible

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many moles are 6.022(10^23) atoms of sodium
    13·1 answer
  • Nuclear decay is a first-order kinetics process. What is the half-life of a radioactive isotope if it takes 233 minutes for the
    9·1 answer
  • The warming of the thermosphere (the upper level of the atmosphere) is caused by the photo absorption of high energy photons. On
    10·1 answer
  • How many moles are in 1.93x1023 particles of Na3PO4?
    15·2 answers
  • How does increased carbon dioxide affects the flow of energy in a closed system
    14·1 answer
  • Help!!
    12·2 answers
  • different energy sources can be used to generate electricity which of the following use a renewable energy resource to generate
    8·1 answer
  • Prepare a dialogue between two friends about development of society .​
    15·1 answer
  • ____ is the transfer of heat by the flow of a heated material.
    5·2 answers
  • 1. How much energy must be absorbed to break the bonds of the 2 molecules of HCl?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!