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4 years ago

PLEASE HELP <3

1 answer:

8 0

In order for carbon to be stable and have 8 electrons, it must make 4 total covalent bonds.

In prefer for oxygen to be stable and have 8 electrons, it must make 2 covalent bonds.

So, we can deduce that CO2 looks like this:

O=C=O

This molecule has two double bonds.

Pssst...Can I get a brainliest?

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If 30mL of 0.5M KOH is needed to neutralize 2M HCl, what was the volume of the acid?

defon

The equation for the reaction between KOH and HCl is as follows
KOH + HCl ---> KCl + H2O
the stoichiometry of KOH to HCl = 1:1
the number of KOH moles reacted = 0.5 mol /1000 cm³ * 30 cm³
= 0.015 mol
the number of HCl moles reacted = number of KOH moles reacted
therefore HCl moles reacted = 0.015 mol
the molarity of HCl is 0.2 mol/dm³
0.2 mol of HCl in - 1000 cm³
Therefore volume required for 0.015 mol = 1000 cm³ / 0.2 mol * 0.015 mol
= 75 cm³
Therefore 75 cm³ of HCl is required

3 0

3 years ago

If the pH of a solution is 6.2 what is the [H+] ?

lesantik [10]

Answer:

6.31×10^-7M

Explanation:

pH= -log[H+]

6.2 = -log[H+]

[H+]= antilog(-6.2) = 6.31×10^-7M

8 0

3 years ago

If the alum reaction was done starting with 12.000 g of al, how many moles of hydrogen gas would be produced according to the ba

mylen [45]

0.67 moles of hydrogen gas.

5 0

3 years ago

What reaction occurs spontaneously?

Dimas [21]

Answer: Exergonic reactions

Explanation: From the research I did, exergonic reactions occur spontaneously because they don't need the addition of energy to occur.

I hope this helps!

4 0

3 years ago

Drag each label to the correct location on the table.

AleksAgata [21]

Explanation:

1) Boyle's Law: This law states that pressure is inversely related to the volume occupied by the gas at constant temperature and number of moles.

$P\propto \frac{1}{V}$ (At constant temperature and number of moles)

When the size of the chamber is increased the volume occupied the gas will increase with which pressure exerted by the gas will decrease down.
When we press the inflated balloon the pressure on the gas is increased with which volume of the occupied by the gas inside the balloon decreased.

2) Charles' Law: This law states that volume occupied by the gas is directly related to the temperature of the gas at constant pressure and number of moles.

$V\propto T$ (At constant pressure and number of moles)

The size of the balloon deceases because the in winters the temperature decreases with which volume of the gas present in the balloon also decreases.
When the flexible closed container is heated the temperature of the gas inside the container increases with which the volume occupied by the gas in the container will increase resulting in expanding of container.

3) Avogadro's Law: This law states that volume occupied by the gas is directly related to the number of moles of the gas at constant pressure and temperature.

$V\propto n$ (At constant temperature and pressure)

When we blow air into the balloon the umber of air particles increases with which the volume of the gas inside the balloon also increases resulting in increase in size of the balloon.

3 0

3 years ago