A teacher brings in a cup of iced water and asks students to discuss if the system is exothermic or endothermic . Aida states th
e system is exothermic , while Alexander states the system is endothermic .
1 answer:
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Answer:
6.67 M
Explanation:
Molarity =
<em>Convert 200g NaOH to moles. Convert 750 mL to L.</em>
200 g NaOH x (1 mol/39.998 g) = 5.00025... mol NaOH
750 mL x (1 L/1000 mL) = 0.750 L
<em>Substitute values into the equation.</em>
Molarity =
Molarity = 6.667... M
Molarity = 6.67 M
The heat lost is
The heat lost when the ice is cooled from 400k to 263K can be calculated using the formula of heat transfer.
<h3>Heat Transfer</h3>This is the heat transferred from a body of higher temperature to a body of lower temperature.
- Q = Heat Transfer
- m = mass = 1277g
- ΔT = change in temperature
We converted the temperature from kelvin scale into Celsius scale and find the change in temperature.
Solving for heat transfer
The heat loss is approximately
Learn more on heat transfer here;