3 years ago

Convert 0.74Kcal/min to cal/sec

1 answer:

6 0

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alexandr402 [8]

Average atomic mass is =1.11 u

need brainliest

4 0

3 years ago

Ilia_Sergeevich [38]

Answer:

The characteristics of cathode rays do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube.

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2 years ago

icang [17]

The cell notation is:

$Mg(s)|Mg^{+2}(aq)||Ag^{+}(aq)|Ag(s)$

here in cell notation the left side represent the anodic half cell where right side represents the cathodic half cell

in anodic half cell : oxidation takes place [loss of electrons]

in cathodic half cell: reduction takes place [gain of electrons]

1) this is a galvanic cell

2) the standard potential of cell will be obtained by subtracting the standard reduction potential of anode from cathode

$E^{0}_{Mg}=-2.38V$

$E^{0}_{Ag}=+0.80V$

Therefore

$E^{0}_{cell}=0.80-(-2.38)=+3.18V$

3) as the value of emf is positive the reaction will be spontaneous as the free energy change of reaction will be negative

Δ $G^{0}=-nFE^{0}$

As reaction is spontaneous and there will be conversion of chemical energy to electrical energy it is a galvanic cell.

7 0

3 years ago

stealth61 [152]

Answer:

an oxygen atom with 8 electrons, 8 protons and 9 neutrons

7 0

3 years ago

makvit [3.9K]

Always use least amount of sig figs possible. So this 9.7 would be (answer): 2 sig figs

5 0

3 years ago