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4 years ago

15

When a weak acid (HA) is titrated with sodium hydroxide in the presence of an indicator (Hln), the pH at which a color change is

observed depends on the:

1 answer:

k0ka [10]4 years ago

3 0

Explanation:

the atmosphere and temps

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HELP ME WITH MY WORK BEFORE 4:00 PLZZZZZZZZZZZZZZZZZ PEOPLEZ

Alex787 [66]

Answer:

there are 2 atoms

B) 2

Explanation:

hydrogen and one atom of oxygen bonded together.

8 0

3 years ago

A chemist is using a solution of hno3 that has a ph of 3.75. what is [h ] for the solution?

NemiM [27]

$\text{pH} = -\log[H^{+}]\\\\\implies \log[H^{+}] = -\text{pH}\\\\\implies [H^{+}] = 10^{-\text{pH}}}\\\\\implies [H^{+}] =10^{-3.75}=0.00017~M$

5 0

2 years ago

swat32

Answer:

All life on Earth descended from a common ancestor

4 0

3 years ago

In the Hall-Heroult process, a large electric current is passed through a solution of aluminum oxide Al2O3 dissolved in molten c

gtnhenbr [62]

Answer:

1.13 × 10⁶ g

Explanation:

Let's consider the reduction of aluminum (III) from Al₂O₃ to pure aluminum.

Al³⁺ + 3 e⁻ → Al

We can establish the following relations:

1 Ampere = 1 Coulomb / second
The charge of 1 mole of electrons is 96,468 c (Faraday's constant)
1 mole of Al is produced when 3 moles of electrons circulate
The molar mass of Al is 26.98 g/mol.

The mass of aluminum produced under these conditions is:

$90.0 s \times \frac{1s}{620c} \times \frac{96,468c}{1mole^{-} } \times \frac{3mole^{-}}{1molAl} \times \frac{26.98gAl}{1molAl} =1.13 \times 10^{6} g Al$

6 0

4 years ago

What is the mass of 2.053 moles of silver nitrate?

Verizon [17]

Answer:

Explanation:

Silver nitrate grams to moles

1 grams Silver Nitrate is equal to 0.0058867472248402 mole

8 0

3 years ago