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3 years ago

What will be the product(s) of a single replacement reaction in which the reactants are Fe and 2 HCl?

Chemistry

1 answer:

mash [69]3 years ago

4 0

Answer: Option B) FeCl2 + H2

Explanation:

Fe(s) + 2HCl(aq) → FeCl2(s) + H2(g)

The above is a single replacement reaction because Iron, Fe replaces hydrogen in its compound, HCl to form FeCl2 and liberate hydrogen gas.

Thus, the reaction shows that the more reactive iron, Fe reacts with the dilute hydrochloric acid, HCl to give products such as Iron(II) chloride, FeCl2 and hydrogen gas, H2.

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The chemical formula H2O represents one molecule of water.

Gennadij [26K]

There is a total of three atoms present in the water (H₂O) molecule.

An atom is the smallest particle of an element that may or may not be capable of independent existence.

<h3>What is a molecule?</h3>

A molecule is the smallest particle of an element or compound that can exist freely.

<h3>What is a subscript?</h3>

Subscripts are the numbers that come below after a symbol. They tell you the number of atoms of an element. If there is no subscript then it is understood that the subscript is 1.

<h3>How to calculate the number of atoms in a molecule?</h3>

For calculating the number of atoms in a molecule, add the subscripts of that molecule, and you will get the total atoms of it.

For example, in molecule C₂H₅O, there are 2 carbon atoms, 5 hydrogen atoms, and 1 oxygen atom.

Add the subscripts

2 + 5 + 1 = 8

Hence, there is a total of 8 atoms in C₂H₅O.

For the H₂O molecule,

2 + 1 = 3

Hence, there is a total of 3 atoms present in one water molecule.

Learn more about atoms and molecules:

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7 0

1 year ago

What type of wave is a s-wave and how does energy move through the wave

Blizzard [7]

In S or shear waves, rock oscillates perpendicular to the direction of wave propagation.

3 0

3 years ago

When 711 J of heat is added to a 41.1 g of an unknown metal, the temperature of the metal increases from 22oC to 94oC. Calculate

alekssr [168]

The specific heat capacity of the metal is calculated as follows

heat energy = Mc delta T
heat energy (Q) = (711 j )
m=mass (41.1 g)
c= specific heat capacity =?
delta t = change in temperature( 94 -22=72)

c= Q/m delta T
c=711 j / (41.1 g x72) = 0.240 j/g /k

5 0

4 years ago

n the following reaction, how many liters of oxygen will react with 270 liters of ethene (C2H4) at STP? C2H4(g) + 3O2(g) 2CO2(g)

natima [27]

C₂H₄ + 3O₂ = 2CO₂ + 2H₂O

V(C₂H₄) = 270 L

V(O₂)=3V(C₂H₄)

V(O₂)=3*270=810 L

8 0

3 years ago

Read 2 more answers

Based on what you have read about wind turbines and dams, how does a generator work? A loop of Answer spins in a Answer field, p

vazorg [7]

Based on what you have read about wind turbines and dams, how does a generator work? A loop of ______ spins in a ______ field, producing ______ current.

Answer:

Wire

Magnetic

Electric

Explanation:

The generator works on the principle of converting mechanical energy into electrical energy.

For example in a wind turbine generator, the mechanical energy is the wind that pushes the blades of the turbine directly that leads to conversion of this it's linear motion to the rotary motion required to make rotor of the generator to spin. Finally, the harder the wind pushes, the more the mechanical energy applied and consequently, the more electrical energy can be generated.

Now, all generators work because of the effect of the magnetic field moving past an electrical coil.

Thus, the movement of a magnet across a single loop of wire produces a voltage that is induced within the wire loop as a result of the magnetic field produced by the magnet.

As a voltage is induced across the wire loop, electrons begin to flow around the loop thereby generating electric current.

8 0

3 years ago