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ki77a [65]
3 years ago
7

What feature of a chemical equation is used to balance the equation and make sure it obeys the law of conservation of mass?

Chemistry
2 answers:
gladu [14]3 years ago
6 0

Answer:

b.  Coefficient.

Explanation:

For example:

Zinc combines with oxygen to form zinc oxlde :

We have Zn and O2 forming ZnO:

2Zn + O2 = 2ZnO

The 2's before the Zn and ZnO balance the equation

taurus [48]3 years ago
5 0

Answer:

b) coefficient

Explanation:

Refer to this example:

CH4  +2  O2  →  CO2+  2  H2O

2 is used as a coefficient in this chemical equation.

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Explanation:

When we have direct sunlight, the temperature is higher compared to indirect sunlight.

Direct sunlight is usually overhead whereas indirect sunlight is at an angle to the surface.

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Advantages and disadvantages of titration?
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Answer:

What are the advantages of titration?

Titrimetric analysis commonly referred to as volumetric analysis offers distinct advantages over cumbersome gravimetric methods:

Speed of analysis.

Instantaneous completion of reactions.

Greater accuracy due to minimization of material loss involved in decanting, filtration, precipitation or similar operations.

Explanation:

Disadvantages

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It has limited accuracy.

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The column just before the stable noble gases are called the
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20. What volume of 0.350M KMnO4 solution must be diluted to prepare 600. mL of
Dafna1 [17]

Answer:

25.7 mL

Explanation:

Step 1: Given data

  • Initial volume (V₁): ?
  • Initial concentration (C₁): 0.350 M
  • Final volume (V₂): 600 mL
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Step 2: Calculate the volume of the initial solution

We have a concentrated solution and we want to prepare a diluted one. We can calculate the initial volume using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.150 M × 600 mL / 0.350 M

V₁ = 25.7 mL

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Describe at least two methods to separate a mixture of small copper and iron beads
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