All categories

3 years ago

Explain the need of the term avarage atomic mass

Chemistry

1 answer:

vodomira [7]3 years ago

4 0

Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

Hope this helps :)

You might be interested in

Use the solubility rules from the Lab 4 introduction and your knowledge of qualitative separation schemes from the lab to answer

cluponka [151]

Answer:

a13+a13

Explanation:

4 0

2 years ago

Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of

ExtremeBDS [4]

Answer:

Actual yield = 20.03g

Explanation:

$% yield = 100.\frac{actual yield}{theoretical yield}$ % $yield$ = $100. \frac{actual \ yield}{theoretical \ yield}$

Actual yield = % yield.(theoretical yield) / 100

Actual yield = 75.26.7/100

Actual yield = 20.025

6 0

3 years ago

Read 2 more answers

How many fluorine atoms bond with calcium to form calcium fluoride? one two three four five

Elena-2011 [213]

Calcium fluoride.
Ca is metal, F is non-metal, so they form ionic bond.
Ca as metal can form only positive ion. Ca in the second group, so the charge of Ca ion is 2+. Ca²⁺
F is in the 17th group, so it has 7 electrons on the last level. It is non-metal, non-metal, so it has negative charge -(8-7)=-1. "8" because on the last level cannot be more than 8 electrons. F-ion is F¹⁻.

Ca²⁺ F¹⁻
Number of positive charges should be equal to number of negative charges,
Formula of calcium fluoride
CaF2.
2 atoms Fluorine bond with Calcium.

7 0

3 years ago

The discipline of chemistry has made agricultural chemicals, such as fertilizer and pesticides, available to society.

vesna_86 [32]

Contributing to greenhouse gases

7 0

3 years ago

Read 2 more answers

Determine whether each of the following statements about sulfur oxide and/or nitrogen oxide pollution is true or false.

astraxan [27]

Answer:

a) False

b) False

c) True

Explanation:

a) Most sulfur oxides formed during combustion come from sulfur in the air: The sulfur burns in presence of oxygen to produce sulfur oxides, the source of sulfur is anthropogenic activities (Human activities).

So the given statement is false.

b) A flue gas scrubber removes SO2 pollution in a coal-fired power plant by using lime to convert the SO2 into alcohols:

False

The lime reacts with sulfur dioxide to give carbon dioxide and calcium sulfite.

$CaCO_{3}+SO_{2}--->CaSO_{3}+CO_{2}$

c) True

3 0

3 years ago