3 years ago

Please help me!!!! Thank you so much! I’m giving away 25 points for this one! I need both the problems solved

1 answer:

7 0

23. a. Mn undergoes oxidation
b. S undergoes oxidation

24. a. Oxidizing agent - CuO
Reducing agent - H2
b. Oxidizing agent - PbO
Reducing agent - CO

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Help me please with this question

Margarita [4]

Answer:

[Ne] 3s2 3p1

[Ne] 3s2 3p4

Explanation:

This is shorthand of elecrtonic configuration witch is another word for structure

if u want me to explain it properly message me and i can explain thoroughly how to do it later cause im pretty busy rn

7 0

3 years ago

If 200 grams of water is to be heated from 24.0oC to 100.0oC to make a cup of tea, how much heat must be added?

aksik [14]

According to this formula:

Q = M*C*ΔT

when we have M ( the mass of water) = 200 g

and C ( specific heat capacity ) of water = 4.18 J/gC

ΔT (the difference in temperature) = Tf - Ti

= 100 - 24

= 76°C

So by substitution:

Q = 200 g * 4.18 J/gC * 76 °C

= 63536 J

∴ the amount of heat which be added and absorbed to raise the temp from 24°C to 100°C is = 63536 J

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4 years ago

Which acid has the largest ka: hclo3(aq), hbro3(aq) or hio3(aq)?

ryzh [129]

Greater the Ka value greater is the acid strength. Among these three acids HClO3 is the strongest acid, with greatest Ka and lowest pKa value (-1), Then comes HBrO3, its the second most strongest acid among the three, its Pka value is 0.7, higher than HClO3 but smaller than HIO3 (i.e. 0.77) which the weakest acid among the three.