Chemistry College

1. What is the sum of the coefficients when the following equation is balanced using the lowest, whole numbered coefficients?
NH3(g) + O2(g) => NO (g) + H2O(g)
Group of answer choices
a, 19
b, 17
c, 15
d, 13
e, 21

Answers

Answer 1

Answer:

A: 19

Explanation:

It takes trial and error to balance a chemical equation, but after fidgeting with it for a while the lowest, whole-number coefficients are as follows:

4NH3(g)+5O2(g)⇒4NO(g)+6H2O(g)

We can check this by simply counting the number of molecules on either side of the equation, and adjusting as needed. It's important to remember that we can only ever change the coefficients to balance, never the subscripts.

Once counting the coefficients, we reach a sum of 19.

4+5+4+6=19

Related Questions

Classify each of the following materials as an element, compound, heterogeneous mixture, or a homogeneous mixture:
(a) air
(b) water
(c) diamond
(d) soil

Answers

Air is a homogeneous mixture, water is a compound, diamond is an element, and soil is heterogeneous.

(a) Air is a homogeneous mixture of gases, primarily nitrogen (78%), oxygen (21%), and trace amounts of other gases such as argon, carbon dioxide, and neon.

Air is a mixture of several different elements and compounds and the composition of air can vary depending on location and altitude.

(b) Water is a compound consisting of two hydrogen atoms and one oxygen atom, chemically represented as H2O. It is a clear, odorless, and tasteless liquid that is essential for all forms of life on Earth.

Water is a pure substance and not a mixture of any other compounds or elements.

(c) Diamond is an element made up entirely of carbon atoms. It is a naturally occurring mineral and is one of the hardest and most durable substances known.

It is a pure substance and not a mixture of any other compounds or elements.

(d) Soil is a heterogeneous mixture of organic and inorganic materials such as minerals, rocks, organic matter, water, and air.

Soil is composed of a variety of different compounds and elements and it can vary greatly in composition depending on the location and the environment.

Learn more about mixtures at

https://brainly.com/question/24898889

#SPJ4

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