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malfutka [58]
3 years ago
6

How many significant figures are in 0.05?

Chemistry
1 answer:
drek231 [11]3 years ago
3 0
There is one significant figure 
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Exercise 2
Brums [2.3K]

Answer:

1. Reuse

2.Recycle

3.Reuse

4.Reduce

5.Recycle

Explanation:

Yun lang po ang alam ko.

5 0
3 years ago
An exothermic reaction is a chemical reaction where heat is
ch4aika [34]
Emitted/given off. exo is a way to remember that is is going away. think of a flame. the heat is emitted off onto you.
3 0
2 years ago
Read 2 more answers
What is released in the process of an atom moving from an excited level to a lower energy level?
luda_lava [24]
The correct answer is a Photon.

One photon is released for each event. Photons are elementary particles of all electromagnetic radiation, including light.
7 0
3 years ago
An electrochemical cell is composed of pure nickel and pure iron electrodes immersed in solutions of their divalent ions at room
Andrej [43]

Answer:

0.758 V.

Explanation:

Hello!

In this case, case when we include the effect of concentration on an electrochemical cell, we need to consider the Nerst equation at 25 °C:

E=E\°-\frac{0.0591}{n} log(Q)

Whereas n stands for the number of moles of transferred electrons and Q the reaction quotient relating the concentration of the oxidized species over the concentration of the reduced species. In such a way, we can write the undergoing half-reactions in the cell, considering the iron's one is reversed because it has the most positive standard potential so it tends to reduction:

Fe^{2+}+2e^-\rightarrow Fe^0\ \ \ E\°=0.440V\\\\Ni^0\rightarrow Ni^{2+}+2e^-\ \ \ E\°=-0.250V

It means that the concentration of the oxidized species is 0.002 M (that of nickel), that of the reduced species is 0.40 M and there are two moles of transferred electrons; therefore, the generated potential turns out:

E=(0.440V+0.250V)-\frac{0.0591}{2} log(\frac{0.002M}{0.40M} )\\\\E=0.758V

Beat regards!

8 0
3 years ago
CLIOT
zhuklara [117]
The many electron diamonds around the central carbon are 1689
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3 years ago
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