Chemistry, 25.01.2020 17:31 hamie5124

If the amount of atoms of each type on the left and right sides of a reaction differs, what must be done to balance it?
a. coefficients are placed in front of the reactants and/or products
b. subscripts are placed in the chemical formulas
c. it should be left alone
d. superscripts are placed in the chemical formulas

Answers: 2

Show answers

Answers

option a. coefficientes are placed in front of the reactants and / or products

For example:

H2 + O2 --> H2O

In the left side there are 2 atoms of oxygen and in the right side there is 1 atom of the same element.

Then you must put a number 2 in front of the product with this result:

H2 + O2 --> 2H2O

Now there in the left side there are 2 atoms of hydrogen while in the right side there are 4 atoms of the same element. Then you have to put a 2 in front of H2 in the left side, with this result:

2H2 + O2 --> 2H2O

Now the number of hydrogen and the number of oxygen atoms in both sides are equal, i.e. the equation is balanced.

Answer from: Quest

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

Answer from: Quest

answer : (a) volume of the gas = 8.67 × $10^{-3}$ l

(b) second virial coefficient b = -1.21226 l/mole

solution : given, t = 300k

p = 20atm

z = 0.86

n = 8.2 mmoles = 8.2 × $10^{-3}$ moles

r = 0.082 l atm/k/mol

find, (a) volume of gas and (b) second virial coefficient b at 300k.

formula used : $z=\frac{pv}{nrt}$

and $z=1+\frac{b}{v}$

(a) $z=\frac{pv}{nrt}$

$v=\frac{znrt}{p}$

= $\frac{0.86\times 8.2\times[tex]10^{-3}$ \times 0.082\times 300}{20}[/tex]

= 8.67 × $10^{-3}$ l

(b) $z=1+\frac{b}{v}$

$b=(z-1)v$

= (0.00867-1) × 8.659

= - 8.5839 l/mole

Another question on Chemistry

Chemistry, 21.06.2019 13:30

One of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description?

Answers: 3

Answer

Chemistry, 22.06.2019 03:10

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Answers: 2

Answer

Chemistry, 22.06.2019 05:00

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Answers: 1

Answer

Chemistry, 22.06.2019 10:50

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

Answers: 1

Answer

You know the right answer?

If the amount of atoms of each type on the left and right sides of a reaction differs, what must be...

Questions