All categories

2 years ago

Observe as equações e de acordo com Brönsted-Lowry, os compostos destacados são, respectivamente

Chemistry

1 answer:

Alex777 [14]2 years ago

7 0

answer

j'ai besoin d'aide

You might be interested in

If an object increases in speed, it must be as a result of

zhenek [66]

DkskdjejisdjejkZjdjejasj

3 0

3 years ago

Read 2 more answers

Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el

Dovator [93]

Answer: 406 hours

Explanation:

$Q=I\times t$

where Q= quantity of electricity in coloumbs

I = current in amperes = 39.5 A

t= time in seconds = ?

The deposition of copper at cathode is represented by:

$Cu^{2+}+2e^-\rightarrow Cu$

$96500\times 2=193000$ Coloumb of electricity deposits 1 mole of copper

i.e. 63.5 g of copper is deposited by = 193000 Coloumb

Thus 19.0 kg or 19000 g of copper is deposited by = $\frac{193000}{63.5}\times 19000=57748032$ Coloumb

$57748032=39.5\times t$

$t=1461975sec=406hours$ (1hour=3600s)

Thus it will take 406 hours to plate 19.0 kg of copper onto the cathode if the current passed through the cell is held constant at 39.5 A

3 0

3 years ago

Which of these careers would a student studying biotechnology

matrenka [14]

I think it’s c I could be wrong

3 0

3 years ago

How many atoms are equal to 1.5 moles of hellium

ANTONII [103]

Answer:

There are 1.8×1024 atoms in 1.5 mol HCl

Explanation:

6 0

3 years ago

Read 2 more answers

As of right now, which of the following forms of nuclear power is the most feasible for human use?

nikitadnepr [17]

As of now, the nuclear fission is the most feasible energy source for human use. All the nuclear power plants are based on the controlled nuclear fission reaction, where the unstable nucleus is bombarded with high speed neutrons, thus, splitting the nucleus into stable ones and releasing huge amount of energy. The nuclear fusion requires very high temperature, the temperature equal's to that of the sun. Hence, it is not feasible right now. As the technology advances, we will see advancement in other form of energies.

6 0

3 years ago

Read 2 more answers