Answer: Option (d) is the correct answer.
Explanation:
An electrochemical cell with the help of which chemical energy of a fuel (generally hydrogen) and an oxidizing agent (generally oxygen) are converted into electrical energy by a pair of redox reactions.
A fuel cell is able to generate electricity as long as fuel and oxygen are supplied to it.
As, hydrogen and oxygen are generally used as a fuel so, this results in the formation of water as a by-product.
Thus, we can conclude that the statement fuel cell automobiles are powered by water and the only emission is hydrogen, is FALSE about fuel cells.
This measurement converter chart will help you figure out the liquid measurements called for.
0.5 ml = ⅛ teaspoon.
1 ml = ¼ teaspoon.
2 ml = ½ teaspoon.
5 ml = 1 teaspoon.
15 ml = 1 tablespoon.
25 ml = 2 tablespoons.
50 ml = 2 fluid ounces = ¼ cup.
75 ml = 3 fluid ounces = ⅓ cup.
Answer: 7382 milliliters
Explanation:
1 quart = 946.35 milliliters
Therefore, 7.80 quarts • 946.35 = 7381.55
Round .55 and it becomes 7382 milliliters
Answer:
Q1: 1.67 L.
Q2: Saturated solution.
Explanation:
<u><em>Q1:</em></u>
- We have the role that the no. of millimoles before dilution is equal to the no. of millimoles after dilution.
<em>(MV) before dilution = (MV) after dilution</em>
M before dilution = 10.0 M, V before dilution = 0.5 L.
M after dilution = 3.0 M, V after dilution = ??? L.
<em>∴ V after dilution = (MV) before dilution / M after dilution</em> = (10.0 M)(0.5 L) / (3.0 M) =<em> 1.67 L.</em>
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<u><em>Q2:</em></u>
From the given curve, it is clear that the solubility of sodium nitrate at 35.0°C is 100 g per 100 g of water.
<em>So, the mentioned solution is a saturated solution at this T.</em>
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<em>A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent.</em>
