Is the direct transfer of heat between objects that touch. * Conduction radiation or convection

Answer:

975.56×10²³ molecules

Explanation:

Given data:

Number of molecules of C₂H₆ = 4.88×10²⁵

Number of molecules of CO₂ produced  =  ?

Solution:

Chemical equation:

2C₂H₆  + 7O₂     →      4CO₂ + 6H₂O

Number of moles of C₂H₆:

1 mole = 6.022×10²³ molecules

4.88×10²⁵  molecules×1mol/6.022×10²³ molecules

0.81×10² mol

81 mol

Now we will compare the moles of C₂H₆ with CO₂.

                     C₂H₆          :             CO₂

                          2           :               4

                           81         :           4/2×81 = 162 mol

Number of molecules of CO₂:

1 mole = 6.022×10²³ molecules

162 mol ×6.022×10²³ molecules / 1 mol

975.56×10²³ molecules

The dark-colored mutation could be beneficial in a polluted area because this phenotype may confer an adaptive advantage.

A mutation is any alteration in the nucleotide DNA sequence (genome) of an organism.

Mutation can be beneficial, deleterious, or neutral depending on the environmental conditions in which the individual lives.

In this case, the dark-colored mutation could be beneficial for an insect living in a polluted area because bright-colored phenotypes make the moth very conspicuous to visual predators.

In consequence, dark-colored insects have more chances to survive and reproduce (i.e., they have an adaptive advantage), thereby these insects have more chances of passing this mutation to the next generation.

In conclusion, the dark-colored mutation could be beneficial in a polluted area because this phenotype may confer an adaptive advantage.

Learn more in:

brainly.com/question/10473763

Answer:

Hence the ions per mole are:

In one mole of Li2SO3 , the number of the atoms are

Explanation:

The formula of  lithium sulfite is Li2SO3.

It contain Li+ and SO3(2-) ions.This can be represented by :

Hence one mole of Li2SO3 will give 2 Li+ ions and 1 SO3 (2-) ion.

Hence the ions per mole are:

Number of atoms in  lithium sulfite depends upon the mass of the Li2SO3 present .

Li2SO3 = 93.94 g/mole

This mass is equal to 1 mole of Li2SO3

Now 1 mole of any substance contain Na atoms . This is known as Avogadro Number.

Hence , if 1 mole of Li2SO3 is present then it contains Na atoms

If other then 1 mole present then number of atoms are calculated by:

Here n = number of moles

if the mass of the compound is given then first calculate the number of moles.

It is a physical change becasue the chemical makeup of the water molecule did not change - the molecule just changed state.

Happy to help!