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Sonbull
4 months ago
8

A piece of iron metal is heated to 155 degrees C and placed into a calorimeter that contains 50.0 mL of water at 18.7 degrees C.

The temperature of the water rises to 26.4 degrees C. How much heat was released by the iron?
A-1610 J
B-5520 J
C-385 J
D-2250 J
Chemistry
2 answers:
VMariaS [2.9K]4 months ago
3 0
Jsjsjsdjdjkdskkeekdks probably answer a
alisha [2.9K]4 months ago
0 0

It's option A; I'm just uncertain about how. But it's definitely option A.

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If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water and the calorimeter incr
VMariaS [2998]

Answer:

The heat capacity of the calorimeter is C_c = 54.4 \frac{J}{c}

Explanation:

Given the data

Heat supplied Q = 4.168 KJ = 4168 J

Mass of water m_w = 75.40 gm

Change in temperature = ΔT = 35.82 - 24.58 = 11.24 °C

From the conditions provided

Q = m_w C_w ΔT + C_c ΔT

Plugging all values into the above equation yields

4168 = 75.70 × 4.18 × 11.24 +  C_c × 11.24

611.37 =  C_c × 11.24

C_c = 54.4 \frac{J}{c}

This represents the heat capacity of the calorimeter.

7 0
3 months ago
Marie and Calvin dissolved 10 grams of KNO3 in 100 grams of water at 25oC. Next they added 5 grams more. Calvin told Marie that
Alekssandra [3086]
Hi there! Calvin informed Marie that they could still incorporate solute until reaching 40 grams because the solution remained unsaturated. Unsaturated solutions denote situations where the solvent (water in this instance) can further dissolve more solute (here, KNO₃) considering the current pressure and temperature. This can be visually confirmed when additional solute does not lead to visible solid residues settling at the bottom of the flask, indicating that the dissolving rate surpasses the crystallization rate. Wishing you a pleasant day!
8 0
2 months ago
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