CHEMISTRY HIGH SCHOOL

The two classifications of all chemicals are organic and salts.
a. True
b. False

Answers

Answer 1
Answer: Chemicals are never classified all depends upon it's physical and chemical properties so the answer is FALSE
Answer 2
Answer:

Answer:

False I took the test

Explanation:

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Why can molten solution of ionic compounds be electrolysed

Answers

Answer:

the current is carried through the electrolyte by the movement of ions - not electrons.

Explanation:

The reason that an electrolyte has to be molten or in solution is that the current is carried through the electrolyte by the movement of ions - not electrons. In a solid, those ions can't move. It also follows, of course, that an electrolyte must contain ions.

the number of electrons in the outer ring of the elements phosphorus, potassium, oxygen, iodine, gold, bromine, sulfur, and cobalt?

Answers

Phosphorus = 5
Potassium = 1
Oxygen = 6
Iodine = 7
Gold = (a transition metal)
Bromine = 7
Sulfur = 6
Cobalt = (a transition metal)

For future reference, look at the group number along the top, it tells you :)

Answer: I think its c (germanium)

Explanation:

Explain by referring to the atomic structure of carbon. Compare between carbon fiber and iron (Fe) in terms of durability and performance.

Answers

Carbon is a chemicalelement with a chemical symbol "C". It has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6electrons. Since carbon is in the second row (or second period), it has 2 electron orbits. Use the clay to make your protons and neutrons in the nucleus.

However, some factors do influence its durability, like its matrix. Furthermore, the intense use of composites and environmental factors could affect its durability and potential applications.

Difference between carbon fiber and iron

  • Carbonfiber is five-times stronger than iron( FE ) and twice as stiff. Though carbon fiber is stronger and stiffer than Iron (Fe) it is lighter than steel; making it the ideal manufacturing material for many parts. These are just a few reasons why carbon fiber is favored by engineers and designers for manufacturing.

  • Steel with more carbon is harder and stronger than pure iron, but it also breaks more easily (brittle).

Read more about carbon fibre:

brainly.com/question/21235714

Hydrogen chloride gas is shipped in a container under 5,100 mmHg of pressure that occupies 20.1 liters at 29°C. How many liters of gas would be produced at STP?

Answers

The  number  of liters  of a gas  that  would  produced at STP is  121.86  Liters


calculation

Step 1 : calculate the  moles  of  hydrogen  chloride  gas  using  ideal gas  equation

That is PV=nRT  where,

P( pressure) = 5100 mm hg

V(volume)= 20.1 L

n(number of moles)= ? moles

R( gas constant) =  62.3636 L.mmhg/mol.K

T( temperature) =29 °C  in to kelvin = 29 +273 =302 K


by making n  the subject  of the formula by diving both side  by RT

n= Pv/RT

n=[(5100 mm hg x20.1 L)/(62.3636 l.mmhg/mol.k x 302 K)]  =5.44 moles


Step : calculate  the  liters  of a gas at STP

that is at STP

   1 moles  = 22.4 L

5.44  moles=? L

by cross multiplication

=( 5.44 mole  x 22.4 L)  / 1 mole =121.86  liters

Does anyone know the redox equation for galvanic corrosion that occurs between copper and iron?(basically the corrosion of the statue of liberty)

Answers

I'm not completly sure but this might be it. Fe-> Fe2+ + 2e-

Formula A: CH3Formula B: C2H6
Given the two formulas representing the same compound:
Which statement describes these formulas?
(1) Formulas A and B are both empirical.
(2) Formulas A nd B are both molecular.
(3) Formula A is empirical and Formula B is molecular.
(4) Formula A is molecular and Formula B is empirical.

Answers

Correct option is (3).

Empirical formula:-Simplest whole number ratio of various atoms present in a compound.

Molecular formula:-The formula that gives the total number of atoms of each element in each molecule of a substance.

So, C_2H_6(formula B) is the molecular formula, andCH_3 (Formula A)is the empirical formula.

Hence, the correct option is (3).

To know more about:-

brainly.com/question/24357559
(3) because Hydrocarbon compound has 3 forms:
CnH2n
CnH2n-2
And CnN2n+2
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