Answer:
c = 0.898 J/g.°C
Explanation:
1) Given data:
Mass of water = 23.0 g
Initial temperature = 25.4°C
Final temperature = 42.8° C
Heat absorbed = ?
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Specific heat capacity of water is 4.18 J/g°C
ΔT = 42.8°C - 25.4°C
ΔT = 17.4°C
Q = 23.0 g × × 4.18 J/g°C × 17.4°C
Q = 1672.84 j
2) Given data:
Mass of metal = 120.7 g
Initial temperature = 90.5°C
Final temperature = 25.7 ° C
Heat released = 7020 J
Specific heat capacity of metal = ?
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 25.7°C - 90.5°C
ΔT = -64.8°C
7020 J = 120.7 g × c × -64.8°C
7020 J = -7821.36 g.°C × c
c = 7020 J / -7821.36 g.°C
c = 0.898 J/g.°C
Negative sign shows heat is released.
The reaction is at equilibrium at 1,000 K. The equilibrium constant of the reaction is 3.90. At equilibrium, the concentrations are as follows.
[CO] = 0.30 M
[H2] = 0.10 M
[H2O] = 0.020 M
What is the equilibrium concentration of CH4 expressed in scientific notation?
answer is b
Answer:
Number 1
Explanation:
O The ice at 0 degrees is warmer than the ice at -30 degrees.
The maximum weight of liquefied petroleum gas that can be stored in one indoor area is 200 pounds.
<h3>
What is liquefied petroleum gas?</h3>
Liquefied petroleum gas (LPG), also called LP gas, any of several liquid mixtures of the volatile hydrocarbons propene, propane, butene, and butane.
<h3>How is liquefied petroleum gas stored?</h3>
Liquefied petroleum gas (LPG) is stored in pressure vessels. As such, it is almost always stored in its liquid form.
Thus, the maximum weight of liquefied petroleum gas that can be stored in one indoor area is 200 pounds.
Learn more about liquefied petroleum gas here: brainly.com/question/14285986
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Metallic bonding is the answer to your question.
All metals, which have metallic bonding existing in them, are malleable, which means they can be easily change shape without breaking their bonding.
To understand the reason behind this property, we have to know what a metallic bonding is. Metallic bond is the non directional electrostatic force (attraction force) existing between metal cations (atoms but with fewer electrons), and the sea of the delocalised electrons (from the atom itself). Since metallic bond is strong, and the ions are packed regularly, the structure cannot be broken easily.
Once we apply pressure to the metal, the ions adapt a new position and stays in that new shape, thus, we say metals are malleable.