m hasperature of each substance is measured. The aluminurcooled to 35 °C, while the water has cooled only to 66 °C.Explain this difference.47. How much heat is required to warm 1.50 L of water from 25.0 °Cto 100.0 °C? (Assume a density of 1.0 g/mL for the water.)48. How much heat is required to warm 1.50 kg of sand from25.0 °C to 100.0 °C?49. Suppose that 25 g of each substance is initially at 27.0 °C. Whatis the final temperature of each substance upon absorbing2.35 kJ of heat?a. goldb. silverc. aluminumd. water50. An unknown mass of each substance, initially at 23.0 °C,absorbs 1.95 × 103 J of heat. The final temperature is recorded.Find the mass of each substance.a. Pyrex glass (T = 55.4°C) b. sand (T = 62.1°C)c. ethanol (T= 44.2°C)d. water (T = 32.4°C)51. How much work (in J) is required to expand the volume of apump from 0.0L to 2.5 Lagainst an external pressure of 1.1 atm?

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Asked Mar 6, 2019
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Question 49a, b, c, d

m has
perature of each substance is measured. The aluminur
cooled to 35 °C, while the water has cooled only to 66 °C.
Explain this difference.
47. How much heat is required to warm 1.50 L of water from 25.0 °C
to 100.0 °C? (Assume a density of 1.0 g/mL for the water.)
48. How much heat is required to warm 1.50 kg of sand from
25.0 °C to 100.0 °C?
49. Suppose that 25 g of each substance is initially at 27.0 °C. What
is the final temperature of each substance upon absorbing
2.35 kJ of heat?
a. gold
b. silver
c. aluminum
d. water
50. An unknown mass of each substance, initially at 23.0 °C,
absorbs 1.95 × 103 J of heat. The final temperature is recorded.
Find the mass of each substance.
a. Pyrex glass (T = 55.4°C) b. sand (T = 62.1°C)
c. ethanol (T= 44.2°C)
d. water (T = 32.4°C)
51. How much work (in J) is required to expand the volume of a
pump from 0.0L to 2.5 Lagainst an external pressure of 1.1 atm?
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m has perature of each substance is measured. The aluminur cooled to 35 °C, while the water has cooled only to 66 °C. Explain this difference. 47. How much heat is required to warm 1.50 L of water from 25.0 °C to 100.0 °C? (Assume a density of 1.0 g/mL for the water.) 48. How much heat is required to warm 1.50 kg of sand from 25.0 °C to 100.0 °C? 49. Suppose that 25 g of each substance is initially at 27.0 °C. What is the final temperature of each substance upon absorbing 2.35 kJ of heat? a. gold b. silver c. aluminum d. water 50. An unknown mass of each substance, initially at 23.0 °C, absorbs 1.95 × 103 J of heat. The final temperature is recorded. Find the mass of each substance. a. Pyrex glass (T = 55.4°C) b. sand (T = 62.1°C) c. ethanol (T= 44.2°C) d. water (T = 32.4°C) 51. How much work (in J) is required to expand the volume of a pump from 0.0L to 2.5 Lagainst an external pressure of 1.1 atm?

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Expert Answer

Step 1

The relationship between heat, mass, specific heat and change in temperature is given by,

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Step 2

Rearrange the above equation.

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Step 3

a. Gold:

The specific heat capacity of gold is 0.129 J/g˚C

Calculate ...

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