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Calculate the quantity of heat absorbed by 20 $\mathrm{g}$ of water that warms from $30^{\circ} \mathrm{C}$ to $90^{\circ} \mathrm{C} .$

Calculate the quantity of heat absorbed by 20 $\mathrm{g}$ of water that warms from $30^{\circ} \mathrm{C}$ to $90^{\circ} \mathrm{C} .$

Conceptual Physics

Questions asked

INSTANT ANSWER

1. The student council is selling flowers for mother's day. They bought 200 roses for \( \$ 1.67 \) each, 150 daffodils for \( \$ 1.03 \) each and 100 orchids for \( \$ 2.59 \) each. They sold the roses for \( \$ 3.00 \) each, the daffodils for \( \$ 2.25 \) each and the orchids for \( \$ 4.50 \) each. a. Organize the data in two matrices, and use matrix multiplication to find the total amount spent of

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ANSWERED

Supreeta N verified

Numerade educator

a 800 sample of water was heated from 9.00C to 100C. calculate the amount of heat absorbed in kJ by the water

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INSTANT ANSWER

2. A 800-g sample of water is heated from \( 9.00^{\circ} \mathrm{C} \) to \( 100.0^{\circ} \mathrm{C} \). Calculate the amount of heat absorbed (in kilojoules) by the water. (5 Marks)

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ANSWERED

David Collins verified

Numerade educator

CHM3062 Assignment ANSWER ALL QUESTIONS DEADLINE 24 JANUARY 2023 23.59 pm 1. The thermite reaction involves aluminum and iron (III) oxide 2Al (s) + Fe2O3 (s) ? Al2O3 (s) + 2Fe (l) This reaction is highly exothermic and the liquid iron formed is used to weld metals. Calculate the heat released in kilojoules per gram of Al reacted with Fe2O3. Given; ?H°f for Al (s) is 0 kJ/mol, ?H°f for Fe2O3 (s) is -822.2 kJ/mol, ?H°f for Al2O3 (s) is -1669.8 kJ/mol, ?H°f for Fe(l) is 12.40 kJ/mol (10 Marks) 2. A 800-g sample of water is heated from 9.00°C to 100.0°C. Calculate the amount of heat absorbed (in kilojoules) by the water. (5 Marks) Supply two references for each question with correct APA referencing formats (5 Marks)

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