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3 years ago

13

For s2cl2 draw an appropriate lewis structure (clsscl). draw the molecule by placing atoms on the grid and connecting them with

bonds. include all lone pairs of electrons.

1 answer:

Anettt [7]3 years ago

8 0

Structure is drawn in attached image ..

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Name the Scientist

IRISSAK [1]

Answer:

A. Ernest Rutherford

B.Bohr

C. Eugen Goldstein

D.. Santiago Ramon y cajal

E.john Dalton

F.isobars - a line drawn on a weather map connecting points of equal pressure is called isobars.

example.. argon 40

potassium 40

.two differences between isobars and isotopes.

isobars are those elements which have different atomic number but the same mass number. while isotopes are those elements having the same atomic number and different mass number..

two uses of isotopes.

uranium 235 - for nuclear fission and as fuel in unclear reactors.

# an isotope cobalt - used In the treatment for cancer

# an isotope iodine - used in treatment of goiter.

7 0

3 years ago

Which conversion factor do you use first to calculate the number of grams of CO 2 produced by the reaction of 50.6 g of CH 4 wit

Brilliant_brown [7]

Answer:

Thus, first conversion of mass of methane into moles by dividing it with 16.04 g/mol

Mass = 138.63 g

Explanation:

The balanced chemical reaction is shown below:-

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Firstly the moles of methane gas reacted must be calculate as:-

Given, mass of methane = 50.6 g

Molar mass of methane gas = 16.04 g/mol

The formula for the calculation of moles is:-

$Moles=\frac{Mass\ taken}{Molar\ mass}=\frac{50.6}{16.04}\ mol=3.15\ mol$

Thus, from the reaction stoichiometry,

1 mole of methane produces 1 mole of carbon dioxide

Also,

3.15 mole of methane produces 3.15 mole of carbon dioxide

Moles of $CO_2$ = 3.15 mole

Molar mass of $CO_2$ = 44.01 g/mol

Mass = Moles*Molar mass = $3.15\times 44.01$ g = 138.63 g

3 0

3 years ago

An example of a pure substance is ____.

Vsevolod [243]

Answer: e) all of these

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water $(H_2O)$ , carbon dioxide $(CO_2)$

Mixtures are not pure substances as they consist of elements and compounds combined physically and not in any fixed ratio. Example: Air

Thus all given substances are pure substances.

6 0

3 years ago

Why do cells prefer to use carbohydrates as a source of energy before they use fats and proteins.

Semmy [17]

The primary role of carbohydrates is to supply energy to all cells in the body. Many cells prefer glucose as a source of energy versus other compounds like fatty acids. Because the energy from glucose comes from the chemical bonds between the carbon atoms.

7 0

2 years ago

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Why was daltons theory more successful than Democritus's theory

Daniel [21]

Because dalton had the facts from other's experiments. Democritus just had an unproven theory.

5 0

3 years ago

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