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QveST [7]
3 years ago
14

Is the following chemical equation balanced? 2Na + 2H2O 2NaOH + H2

Chemistry
2 answers:
Mumz [18]3 years ago
8 0

yes because you have 2 H 2Na 2O on both sides


Harman [31]3 years ago
6 0

Answer : Yes, the given chemical reaction is balanced equation.

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The given chemical reaction is,

2Na+2H_2O\rightarrow 2NaOH+H_2

In this reaction, there are 2 atoms of sodium, 4 atoms of hydrogen and 2 atoms of oxygen are present on both side of the reaction. So,

This chemical reaction is a balanced reaction because in this reaction, the number of atoms of sodium, hydrogen and oxygen are balanced on the side of the reaction.

Hence, yes the given chemical reaction is balanced equation.

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PLEASE ANSWER QUICKLY !!! FOR MY CHEMISTRY CLASS !!!!!
Sergio039 [100]

The density of the unknown metal, given the data is 1.67 g/mL

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the above formula, we can determine the density of the unknown metal. Details below:

<h3>How to determine the density </h3>
  • Mass of unknown metal = 20 - 0 = 20 g
  • Volume of unknown metal = 12 - 0 = 12 mL
  • Density of unknown metal =?

Density = mass / volume

Density of unknown metal = 20 / 12

Density of unknown metal = 1.67 g/mL

Thus, the density of unknown metal is 1.67 g/mL

Learn more about density:

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4 0
1 year ago
Na-23 has 12 neutrons. What is it’s atomic number?
erastovalidia [21]

Answer:

11

Explanation:

The atomic number = number of protons. The mass number (23) = sum of number of neutrons and protons. Since you know the mass number is 23 and it has 12 neutrons, 23-12 gives you 11 protons, so its atomic number is 11.

If you want additional help in chemistry or another subject for FREE, check out growthinyouth.org

6 0
2 years ago
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A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?
Vesna [10]
Convert grams to moles [grams/molar mass] ~ Moles
Convert moles to atoms [moles * 6.02 x 10^23] = Atoms
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Answer:

NH4CL is the answer

Explanation:

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