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Andrej [43]
3 years ago
6

In which way does a balanced chemical equation demonstrate the conservation of matter?

Chemistry
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

A. It shows the same number of atoms of each element on both sides of the equation.

Explanation:

A balanced chemical equation demonstrates the conservation of matter by showing the number of atoms of each element on both sides of the equation or expression.

According to the law of conservation of matter, matter is neither created nor destroyed in the course of a chemical reaction but atoms are rearranged.

  • Based on this premise, the number of atoms or moles on both sides of the expression must be equal.
  • If there are 3 atoms of carbon on one side, the product must also reflect 3 atoms of carbon.
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How does the Electoral College help to ensure that citizens in all states have a voice in the election of the
vredina [299]

Answer:

See below

Explanation:

The electoral college ensures that the most populated states can't always pick the next president.  States that have the most population would be able to skew the elections by cancelling out several other less populated state's voters.  One large city could cancel out every vote from the state of Rhode Island.

With the electoral college, each state has a given number of votes to cast for a president.  Some states can split their college votes while others cast all votes for the same candidate.

If you look at Pennsylvania in 2020 as an example, they have 20 electoral votes.  Pennsylvania does not split their votes so all go to just one candidate.  In the measurement of votes, it might show that candidate A got 51% of the votes and candidate B got 49%.  The 20 electoral votes would all go to candidate A and candidate B gets nothing.  Candidate B may have gotten millions of individual votes within the state but that no longer matters.  Candidate A won the state so gets all 20 electoral votes.  If the country went by the individual vote, Candidate B would keep all those votes he got from the 2 or 3 large cities in Pennsylvania.

It would be easy to see that if you only counted the individual votes (called the popular vote), a candidate could compile more votes from all of the states even though the candidate did not win that state by the majority vote.  The electoral college makes sure that a candidate cannot carry those votes from the state that they lost.

If elections were based on this popular vote, then most of the states with small populations would barely affect the outcome of an election.  The popularity vote would ensure that the states with the largest populated cities would always control who gets elected.

It would especially be detrimental in todays age since most large cities are almost always voting for just one party.

5 0
3 years ago
Give an example of a predator-prey relationship. Then, identify the predator and prey.
tangare [24]
One example of a predator prey relationship would be a a shark and a fish. The shark is the predator and the fish is the prey. The predator hunts for the prey.
7 0
3 years ago
Read 2 more answers
Acids and bases can neutralize each other in double displacement reactions. For example, if hydrogen chloride (a strong acid, HC
scoray [572]

Answer:

The answer to your question is    HCl  +  NaOH   ⇒   NaCl  +  H₂O

Explanation:

Data

Double displacement reaction

Balanced chemical reaction

               HCl  +  NaOH   ⇒   NaCl  +  H₂O

           Reactants           Elements                Products

                 1                  Chlorine (Cl)                    1

                 1                   Sodium (Na)                   1

                 2                 Hydrogen (H)                  2

                 1                   Oxygen (0)                      1

As we can see, the reaction is balanced and the coefficients of all reactants and products are 1, but the number is not written in a balanced reaction.

8 0
3 years ago
When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 9.925 g. If the density of
Vlada [557]
Measured volume = 10 ml 
mass = 9.925 g 
density = 0.9975 g/ml
density = \frac{mass}{volume} 
so actual volume = \frac{mass}{density} = \frac{9.925}{0.9975} = 9.95 mL
Percentage Error = \frac{measured volume - Actual volume}{actual volume} x 100 
= \frac{10 - 9.95}{9.95} x 100 = 0.5 % error
5 0
4 years ago
31) The mass of an electron is approximately 1/1836
dolphi86 [110]

Answer:

(_{1} ^ {1}\textrm{H})  is the correct choice that is option A.

Explanation:

An electron has \frac{1}{1836} times the mass of a proton, but an equal and opposite negative charge.

Lets _{A}^{Z}\textrm{X} is any element represented here.

Where Z is the number of protons as well as its atomic number.

And

A is the mass number which is the number of protons and neutrons in any atom.

Note: We know that Hydrogen (_{1} ^ {1}\textrm{H}) is devoid of neutron,so number of neutrons in a Hydrogen atom is zero.

Then

(_{1} ^ {1}\textrm{H}) is also a representation of single proton.

So (_{1} ^ {1}\textrm{H}) is the right choice that is option A.

6 0
3 years ago
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