Answer:Bunser buner
Explanation: It is meant to heat solid and liquid substance in the lab.
Answer:
0.200 M NaOH: 13.3 mL of the concentrated solution and complete to 20.0mL
0.150 M NaOH: 10.0 mL of the concentrated solution and complete to 20.0mL
0.100 M NaOH: 6.67 mL of the concentrated solution and complete to 20.0mL
0.050 M NaOH: 3.33 mL of the concentrated solution and complete to 20.0mL
0.025 M NaOH: 1.67 mL of the concentrated solution and complete to 20.0mL
Explanation:
It is possible to prepare a solution from a more concentrated one. In the problem, the concentrated solution is 0.300M NaOH. Thus, to prepare 20.0mL of each of the solutions you will need:
0.200 M NaOH: 20.0mL × (0.200M / 0.300M) = <em>13.3 mL of the concentrated solution and complete to 20.0mL</em>
<em>The ratio between the concentrated solution and the solution you want to prepare is called "dilution factor"</em>
<em />
0.150 M NaOH: 20.0mL × (0.150M / 0.300M) = <em>10.0 mL of the concentrated solution and complete to 20.0mL</em>
<em />
0.100 M NaOH: 20.0mL × (0.100M / 0.300M) = <em>6.67 mL of the concentrated solution and complete to 20.0mL</em>
<em />
0.050 M NaOH: 20.0mL × (0.050M / 0.300M) = <em>3.33 mL of the concentrated solution and complete to 20.0mL</em>
<em />
0.025 M NaOH: 20.0mL × (0.025M / 0.300M) = <em>1.67 mL of the concentrated solution and complete to 20.0mL</em>
The balanced molecular equation is Na₂S(aq) + ZnSO₄(aq) → Na₂SO₄(aq) + ZnS(s)
The total ionic equation is 2Na⁺(aq) + S²⁻(aq) + Zn²⁺(aq) + SO₄²⁻(aq) → 2Na⁺(aq) + SO₄²⁻(aq) + ZnS(s)
The net ionic equation is S²⁻(aq) + Zn²⁺(aq) → ZnS(s)
<h3>
what is precipitation?</h3>
Any liquid or frozen water that condenses in the atmosphere and falls to the ground is known as precipitation. Snow, sleet, and rain are just a few of the variations. One of the three main processes that make up the global water cycle is precipitation, along with evaporation and condensation.
Water vapor in the clouds condenses into increasing-sized droplets of water, forming precipitation. Droplets fall to the Earth when they are sufficiently heavy. The water droplets may freeze to produce ice if a cloud is colder, as it would be at higher elevations. Depending on the temperature within the cloud and at the Earth's surface, these ice crystals eventually discharge to the Earth as snow, hail, or rain.
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Answer:
In Chemistry the coefficient is the number in front of the formula. The coefficient tells us how many molecules of a given formula are present.
Explanation:
7 mass number is the number of protons and neutrons in an atom
