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Olenka [21]
3 years ago
7

Which set of balancing coefficients (in respective order) can be used to balance the

Chemistry
1 answer:
Maksim231197 [3]3 years ago
7 0

Answer:

D

Explanation:

--2 K (s) + __ H2SO3 (aq) -- --> _K2SO3 (aq) + __H2

To balance this equation, all you need do is put a 2 in front of the K. The rest don't require any balancing coefficients.

Left

2 K

2 H

1 SO3

Right

K2

1 SO3

1 H2

It's balanced.

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PH3 looks just like ammonia NH3 with a lone pair and 3 hydrogens in a pyramidal formation. 

<span>In PH3 the P has 3 bond pairs and 1 lone pair, (4 total pairs). The shape is called trigonal pyramidal (approximately tetrahedral minus one atom).


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8 0
3 years ago
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What is zinc chemical formula?
Ann [662]

Answer:

Zn+2

Explanation:

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3 years ago
What type of compound is cu2so4
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3 0
3 years ago
Explain how a Buffer acts to resist pH change in a system upon addition of an acid or a base
Leokris [45]

Answer:

Explanation has been given below.

Explanation:

  • A buffer consists of either of a weak acid along with it's conjugate base or a weak base along with it's conjugate acid.
  • Let's consider a buffer consists of a weak acid along with it's conjugate base
  • If we add an acid to this buffer then conjugate base gets protonated and converted to corresponding weak acid. So effect of addition of acid gets neutralized by forming weak acid rather than increase in concentration of proton in solution.
  • If we add a base to this buffer then weak acid gets converted to corresponding conjugate base. So effect of addition of base gets neutralized by forming conjugate base rather than in crease in concentration of hydroxyl ion in solution.
4 0
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The isotope tritium has a half-life of 12. 3 y. Assume we have 11 kg of the substance. How much tritium will be left after 51 y?
Mama L [17]

Half-life is a time in which the concentration of the substance gets reduced to 50% of the initial concentration. The number of tritium that will be left after 51 years is 0.624 kg.

<h3>What is an isotope?</h3>

Isotopes are chemical substances that have the same atomic number but different atomic mass because they have a different number of neutrons in the nuclei.

The half-life of the isotope, tritium is 12.3 years. Assuming we have 11 kg of substance and a number of years 51 years.

11 \times 2 ^{\frac{-51}{12.3}} = 0.6239 \;\rm kg

Therefore, the number of tritium that will be left after 51 years is 0.624 kg.

Learn more about half-life here:

brainly.com/question/17018072

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7 0
2 years ago
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