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3 years ago

How many molecules are in 2.50 moles of SO2

1 answer:

7 0

Every compound or element has a fixed number of molecules per mole. This is given by the Avogadros number which is about 6.022 x 10^23 molecules per mole. Therefore:

molecules = 2.50 moles * (6.022 x 10^23 molecules / mole)

<span>molecules = 1.5055 x 10^24 molecules of SO2</span>

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An element has an average atomic mass of 1.008 amu. It consists of two isotopes , one having a mass of 1.007 amu, and one having

dimulka [17.4K]

Answer:

The most abundant isotope is 1.007 amu.

Explanation:

Given data:

Average atomic mass = 1.008 amu

Mass of first isotope = 1.007 amu

Mass of 2nd isotope = 2.014 amu

Most abundant isotope = ?

Solution:

First of all we will set the fraction for both isotopes

X for the isotopes having mass 2.014 amu

1-x for isotopes having mass 1.007 amu

The average atomic mass is 1.008 amu

we will use the following equation,

2.014x + 1.007 (1-x) = 1.008

2.014x + 1.007 - 1.007 x = 1.008

2.014x - 1.007x = 1.008 - 1.007

1.007 x = 0.001

x= 0.001/ 1.007

x= 0.0009

0.0009 × 100 = 0.09 %

0.09 % is abundance of isotope having mass 2.014 amu because we solve the fraction x.

now we will calculate the abundance of second isotope.

(1-x)

1-0.0009 = 0.9991

0.9991 × 100= 99.91%

6 0

3 years ago

Which of these four elements is the most reactive metal?

Gala2k [10]

Answer:

Sodium is most reactive metal among these. Sodium is present in group one. It is alkali metal.

Explanation:

Please mark as brainliest

3 0

3 years ago

Question 3 of 6

Bond [772]

Answer:

c,d,e

Explanation:

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3 years ago

Diabetes mellitus chacterized by too much glucose buildup in the blood. In

ella [17]

Not exactly sure of the question your asking.

diabetes insipidus (more commonly known simply as diabetes)
Defined:
The pancreas fails to produce the correct amount of insulin which is needed to control the amount of glucose, or sugar needed in the blood.

Diabetes mellitus: a rare condition & more importantly has nothing do do with the pancreas or blood sugar.

6 0

3 years ago

A solution is prepared using 0.125 glucose C6H12O6 is enough water to make 250 g of total solution the concentration of the solu

Nastasia [14]

Answer : The concentration of solution in ppm is, 500 ppm

Solution : Given,

Mass of solute (glucose) = 0.125 g

Mas of solution = 250 g

Parts per million (ppm) : It is defined as the mass of a solute present in one million $(10^6)$ parts by the mass of the solution.