Answer:
Coal: Combustion reaction converts chemical energy into light and heat. Wood: Combustion reaction converts chemical energy into light and heat. Petroleum: Can be burned to release light and heat or changed into another form of chemical energy, such as gasoline.
Explanation:
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Answer:
Saturated solution
We should raise the temperature to increase the amount of glucose in the solution without adding more glucose.
Explanation:
Step 1: Calculate the mass of water
The density of water at 30°C is 0.996 g/mL. We use this data to calculate the mass corresponding to 400 mL.
Step 2: Calculate the mass of glucose per 100 g of water
550 g of glucose were added to 398 g of water. Let's calculate the mass of glucose per 100 g of water.
Step 3: Classify the solution
The solubility represents the maximum amount of solute that can be dissolved per 100 g of water. Since the solubility of glucose is 125 g Glucose/100 g of water and we attempt to dissolve 138 g of Glucose/100 g of water, some of the Glucose will not be dissolved. The solution will have the maximum amount of solute possible so it would be saturated. We could increase the amount of glucose in the solution by raising the temperature to increase the solubility of glucose in water.
The molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.
<h3>How to calculate
molarity?</h3>
The molarity of a solution can be calculated using the following formula:
M = n/V
Where;
- M = molarity
- n = number of moles
- V = volume
M = 0.05/2
Molarity = 0.025M
Therefore, the molarity of a solution that has 0.05 moles of HCL are added to 2 L of H2O is 0.025M.
Learn more about molarity at: brainly.com/question/12127540
<span>Eventually the increase in water may cause the blood cells to burst (cytolysis.) In a hypertonic solution, the concentration of dissolved solutes is greater than that of the cell. ... If the salt solution outside is 20% salt, then the water concentration is 80%.
The red blood cells will shrink in size due to osmotic-like pressure differences until it reaches a "favorable" size.</span>