Yes , the chemist can answer if the compound in K2O or K2O2
The chemical formula and composition of both the compounds is entirely different. The compound K2O2 has an additional molecule of oxygen than K2O and hence will have have higher molecular mass.
In the compound K2O
molecular mass= 2x 39+16 =94
mass ratio of K in compound= 78/94 = 0.830
In the compound K2O2
molecular mass= 2x 39+16X2 =110
mass ratio of K in compound= 78/110 = 0.710
and hence by the required ratio while extracting K , the chemist may know if the compound is K20 or K2O2
If the ratio is anything different from 0.830 and 0.710 then the compund will be something different
#SPJ9
Explanation:
molarity = no. of moles of solute/solution in litres
molarity =0.202/7.98
=0.025 M
The best answer is C! Hope I helped :D
The factors that affect the rate of solution formation are capable of either increasing the rate of solution formation or decreasing it.
<h3>Factors that affect the rate of solution formation</h3>
The rate of solution formation from a chemical reaction depends on the following factors:
- Quantity of solute and solvent: The solute should be in less quantity and solvent should be more in quantity to dissolve the solute. This will enhance the formation of solution
- The size of the solute particles: When the solute particles are in smaller sizes, they react faster with the solvent to form solutions.
- The temperature of solvent: In increased temperature, the solute reacts faster with the solvent.
Therefore, the factors that affect the rate of solution formation are capable of either increasing the rate of solution formation or decreasing it.
Learn more about solutions here:
brainly.com/question/23946616
Answer:
Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. A sensor aboard NASA's Terra satellite is now collecting detailed measurements of how much sunlight the earth's surface reflects back up into the atmosphere.
Explanation:
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