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djyliett [7]
3 years ago
9

A balanced reaction equation must have the same number of atoms of each element on both sides of the equation. The reaction C2H5

OH+3O2→2CO2+3H2O represents the combustion of ethanol. Count the atoms of each element on both sides of the reaction. How many of each atom are there on the reactants side?
Chemistry
1 answer:
Aleks04 [339]3 years ago
6 0
<h3>Answer:</h3>

Atoms of elements on the reactants side

  • 2 Carbon atoms
  • 6 Hydrogen atoms
  • 7 Oxygen atoms
<h3>Explanation:</h3>
  • The equation; C₂H₅OH+ 3O₂ →2CO₂+ 3H₂O is balanced.
  • A balanced chemical equation has an equal number of atoms of each element on either side of the equation.
  • For example, in the equation given, the number of atoms of each element is equal on both sides of the equation.
  • There are 2 carbon atoms, 6 hydrogen atoms, and 7 hydrogen atoms on either side of the equation.
  • According to the law of conservation of mass, the mass of the reactants should be equal to the mass of reactants.
  • Therefore, chemical equations are balanced for them to obey the law of conservation of mass.

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Write, Balance and Label the type of reaction: Potassium Hydroxide plus phosphoric acid yields potassium phosphate and water.
natali 33 [55]

In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:

 

KOH + H3PO4 = KH2PO4 +H2O

7 0
3 years ago
Mars is known as the ____ planet.<br><br> A) Blue<br> B) Gaseous<br> C) Red<br> D) Sandy
Leni [432]

Answer:

Of course it's C

Red planet

Explanation:

It is because the soil on Mars is rich of Fe (Iron).

That makes the soil look red.

Even on our planet we have such this places like hormuz island in Iran.

5 0
3 years ago
Convert 36509 int scientific notation
DIA [1.3K]

Answer:

36509

Explanation:

3.6509×10^2

=3.6509e4

=36.509×10^3

=36509

6 0
3 years ago
If an element has 10 protons and 11 neutrons and 10 electrons, which expression correctly identifies the element? Atomic numbers
Bezzdna [24]

Answer:

Explanation:

Firstly, it should be noted that atomic number (number of protons) determines element. And the element with the atomic number 10 (10 protons) is Neon. Hence, Neon-10 (₁₀Ne) is the answer.

Note that sodium has an atomic number of 11. Also, number of protons is usually equal to the number of electrons in neutral atoms, this is because the total number of positive particles (protons) must be equal to the total number of negative particles (electrons) to give a neutral atom.

4 0
3 years ago
If your lawn is 21.0 ft wide and 20.0 ft long, and each square foot of lawn accumulates 1350 new snow flakes every minute. How m
klemol [59]
Let us start with the total area of the lawn. Area= width x length, ie, 21 x 20 = 420 sq. ft.   Snow flakes per square foot per minute = 1350  So Snow flakes for 420 sq.feet per minute = 420 x 1350 = 567000.   Snow flakes for 1 hour = 567000 x 60 = 34020000 (60 minutes)  Weight of 34020000 snow flakes = 34020000 x 1.60 = 54432000mg.  To convert it into kilograms, divide this number by 1000000 (1 kilogram = 1000000 milligrams)  Thus 54432000/1000000 = 54.432 kilograms or 54 kilograms and 432 grams.
6 0
3 years ago
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