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kykrilka [37]
3 years ago
7

HELP PLEASE!

Chemistry
1 answer:
ira [324]3 years ago
7 0
<h3>Answer:</h3>

The equation is balanced since the number of atoms of each element are equal on both side of the equation.

<h3>Explanation:</h3>
  • Balancing chemical equations involves putting coefficient on the reactants and products of a chemical reaction.
  • It results to equal number of atoms of each element on either side of the equation.
  • A balanced chemical equation obeys the law of conservation of mass such that the mass of reactants is equal to the mass of products.
  • The equation; 4AI(s) + 3O₂(g) → 2AI₂O₃(s) is balanced since the number of atoms of each element are equal on both side of the equation.
  • That is, 4 aluminium atoms and 6 oxygen atoms on both side of the equation.
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5 0
4 years ago
Which graphic below shows the correct orientation of each water molecule when it is near the cl- ion in the aqueous solution?
andrew-mc [135]
The question is missing the graphics required to answer which I have attached as an image.

There are four different representations of the orientation of water molecules around chloride anion. Let's first analyze the water molecule.

We have H-O-H as the structure of water. The oxygen atom is more electronegative than the hydrogen atoms, which results in a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.

The chloride anion is a negative charge. Therefore, the water molecules should orient themselves with the hydrogen atoms facing the chlorine atom as the partial positive charge on the hydrogen atoms will be attracted to the negative charge of the chlorine atom.

The correct representation is shown in graph 3 which shows all hydrogen atoms facing the chlorine anion.

8 0
4 years ago
What is condensation ?
fomenos

Answer:

gvapor or gas to liquid

Explanation:

water which collects as droplets on cold surface when humid air is in contact with it

3 0
3 years ago
Read 2 more answers
How much heat is needed to raise the temperature of water with mass of 27.0 g at 20.0°C to 45.0°C?
ohaa [14]

Answer:

2835 J

Explanation:

Take the specific heat capacity of water as 4.2 J/ g°C.

Energy (heat) = mass x specific heat capacity x change in temperature

(E= mcΔT)

E = 27 x 4.2 x (45-20)

E = 2835 J

7 0
4 years ago
What is meant when one says that acetic acid is a stronger acid than benzoic acid?
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hope this helps :)

6 0
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