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lesantik [10]
3 years ago
15

The combustion of hydrogen gas in oxygen, is it an endothermic or exothermic process? Write a chemical reaction for this process

Chemistry
1 answer:
Crank3 years ago
6 0

Answer:

exothermic process because the process of association of oxygen and hydrogen is taking place..

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Ap sublevel has 3 electrons. How should they be arranged
galina1969 [7]

Answer:

C.)One electron in each p orbital

Explanation:

In a P-sublevel with 3 electrons, they should be arranged with one electron going into each p-orbitals.

This is in accordance with the Hund's rule of maximum multiplicity.

The rule states that "electrons go into degenerate orbitals or sub-levels(p,d and f) singly before paring up".

Since the p-orbital is 3-fold degenerate with a capacity to accommodate a maximum number of 6 electrons, given 3 electrons, they will follow the Hund's rule in order to fill the orbitals.

So one electron will go in each p - orbitals easily.  

4 0
3 years ago
Which of the following describes the properties of a substance?
Anestetic [448]
The answer is A how it react with other chemicals


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6 0
3 years ago
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For each reaction, write the chemical formulae of the oxidized reactants in the space provided. Write the chemical formulae of t
liberstina [14]

Explanation:

First Reaction;

Ca + ZnCl2 --> CaCl2 + Zn

Oxidized Reactant: Ca. There is increase in oxidation number from 0 to +2

Reduced Reactant: Zn. There is decrease in  oxidation number form +2 to 0

Second Reaction:

FeI2 + Mg --> Fe + MgI2

Oxidized Reactant: Mg. There is increase in oxidation number from 0 to +2

Reduced Reactant: Fe. There is decrease in  oxidation number form +2 to 0

Third Reaction;

Mg + 2AgNO3 --> Mg(NO3)2 + Ag

Oxidized Reactant: Mg. There is increase in oxidation number from 0 to +2

Reduced Reactant: Ag. There is decrease in  oxidation number form +1 to 0

5 0
3 years ago
The law of conservation of mass says that *
BabaBlast [244]
The answers would be the mass before a reaction is the same as the mass after a reaction which basically means mass is conserved
8 0
2 years ago
What are the tube feet on a star fish
Snezhnost [94]
They are used to pass food to the oral mouth at the center, and can attach to surfaces.
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3 years ago
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