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Marianna [84]
3 years ago
11

Which of these describes an endothermic reaction?

Chemistry
1 answer:
neonofarm [45]3 years ago
3 0
B) energy is absorbed by the reaction
is right answer.
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2. Fluorine gas exerts a pressure of 1.2 atm. When the
Mariana [72]

Answer:

look at the photo........................

6 0
2 years ago
Predict the bond polarity of the following bonds:
Nataliya [291]
CH is nonpolar
NH is polar
CCl is polar
SiO is polar
SCl is polar
CO is polar
OF is nonpolar
Remember that polarity results from unequal electron sharing
8 0
3 years ago
Oxygen is produced at the positive electrode
abruzzese [7]

Answer:

See Explanation

Explanation:

In electrolysis, a solution called the electrolyte is decomposed by the passage of direct current through it.

The points through which current enters and leaves the electrolyte are called electrodes. In electrolysis, oxidation occurs at the anode and reduction occurs at the cathode.

In the electrolysis of water; at the anode oxygen is produced as follows;

4OH^-(aq) -----> 2H2O(l) + O2(g) + 4e

5 0
3 years ago
What mass of water must be used to make a 1.35 m solution that contains 8.20 mol NaOH?
Sergeeva-Olga [200]
Answer is: <span>mass of water is 6.07 kilograms.
</span>b(NaOH) = 1.35 m.
n(NaOH) = 8.20 mol.
b(NaOH) = n(NaOH) ÷ m(H₂O).
m(H₂O) = n(NaOH) ÷ b(NaOH).
m(H₂O) = 8.20 mol ÷ 1.35 mol/lg.
mm(H₂O) = 6.07 kg.
m - molality.
n - amount of substance.
6 0
2 years ago
Which represents the ionization of a strong electrolyte?
olga55 [171]
The answer is K3PO4(s) → 3K+(aq) + PO43–(aq) since water-soluble ionic tripotassium phosphate dissociates completely into K+ and PO43– ions when dissolved, that is, no K3PO4 remains in the solution. Carbonic acid H2CO3 and acetic acid CH3COOH are weak electrolytes since they are weak acids that do not completely ionize, while nonelectrolyte CH3OH do not dissociate into ions.
5 0
2 years ago
Read 2 more answers
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