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3 years ago

I.j Thompson’s experiments provided evidence that an atom

Chemistry

1 answer:

Lemur [1.5K]3 years ago

4 0

JJ Thompson proved Electrons, so negative charge

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Write net Brønsted equations that show the acidic or basic nature of the following solutions in water. For polyprotic species (v

Snezhnost [94]

Answer:

The reactions are shown in the explanation

Explanation:

The net bronsted equation will include the acid / base and its dissciated product. (conjugate base or acid and hydrogen or hydroxide ions)

a) Vinegar

$CH{3}COOH+H_{2}O--->CH{3}COO^{-}+H_{3}O^{+}$

b) bleach

$NaOCl+H_{2}O--->HOCl+Na^{+}+OH^{-}$

c) ammonia

$NH_{3}+H_{2}O--->NH_{4}^{+}+OH^{-}$

d)Vitamin C

$H_{2}C_{6}H_{6}O_{6}+H_{2}O--->HC_{6}H_{6}O_{6}^{-}+H_{3}O^{+}$

e)Citric acid

$H_{3}C_{6}H_{6}O_{7}+H_{2}O--->H_{2}C_{6}H_{6}O_{7}^{-}+H_{3}O^{+}$

f) Washing soda

$Na_{2}CO_{3} +H_{2}O--->NaHCO_{3}^{-}+OH^{-}$

3 0

3 years ago

Measure that affects the thermal energy of matter but not it's temperature.

jenyasd209 [6]

Answer: mass

Explanation:

6 0

3 years ago

2. A gas has a solubility in water

Juliette [100K]

Answer:

2.6 atm

Explanation:

At constant temperature, solubility of gas increases as pressure increases, Hence, they varies directly proportional.

i.e S ∝ P

$\frac{S}{P}= K$

$\frac{S_1}{P_1}=\frac{S_2}{P_2}$

where:

S₁ and P₁ are the initial solubility and pressure of the gas

S₂ and P₂ are the final solubility and pressure of the gas

Making P₂ the subject of the formula from the above equation; we have:

$P_2 = \frac{P_1*S_2}{S_1}$

where; it is given from the question that:

P₁ = 1.0 atm

S₁ = 0.36 g/L

S₂ = 9.5 g/L

Replacing the values into the above equation; we have:

$P_2 = \frac{1.0 atm *9.5 g/L}{0.36 g/L}$

P₂ = 2.6 atm

∴ The pressure needed to produce an aqueous solution containing 9.5 g/L of the same gas at 0°C = 2.6 atm

7 0

3 years ago

There are many lewis structures you could draw for sulfuric acid, h2so4 (each h is bonded to an o). part a what lewis structure(

erica [24]

Structure 1 is satisfying octet rule because each atom surrounded by 8 electrons:
The valance electron for oxygen is 6, for sulfur is 6, but for hydrogen is 1. Therefore, the molecule has <span>valance electrons. Sulfur is bonded with 4 oxygen atoms, 4 single bonds, whereas 2 hydrogen atoms are bonded with 2 oxygen atoms.

But the actual structure is 2 but it violates octet rule since S is surrounded in this case with 12 electrons
</span>

7 0

3 years ago

Read 2 more answers

How long will it take you to get to class 300 meters away if you go 0.5 m/s?

cricket20 [7]

Answer:

600 seconds, or 10 minutes

Explanation:

300m/ 0.5m = 600s

7 0

3 years ago