Answer:
Pumice is a light colored, porous igneous rock. It forms during volcanic eruption occurring under water. It is an aggregate of concrete. Because of their porous nature they float over the surface of water. With time the pumice rocks undergoes with several changes including weathering, erosion, and transportation. The extent of heat and pressure, making the sediments of the pumice rocks into metamorphic rocks distinct in the chemical and physical composition of the parent material.
Answer is: d) Hg.
Mercury is a chemical element with the symbol Hg and atomic number 80. <span> Mercury is the only metallic element that is liquid at standard conditions for temperature and pressure.
</span>Absolute viscosity of mercury is 0,0015 Pa·s.
The viscosity<span> of a </span>fluid<span> is a measure of its </span>resistance<span> to gradual deformation by </span>shear stress<span> or </span><span>tensile stress</span>
Answer:
T₂ = 669.2 K
Explanation:
Given data:
Initial pressure = 660 torr
Initial temperature = 26 °C (26 +273 = 299 K)
Final volume = 280 mL ( 280/1000 = 0.28 L)
Final pressure = 940.0 torr
Final volume = 0.44 L
Final temperature = ?
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₁V₁/T₁ = P₂V₂/T₂
T₂ = P₂V₂ T₁ /P₁V₁
T₂ = 940 torr × 0.44 L × 299 K / 660 torr × 0.28 L
T₂ = 123666. 4 torr. L. K / 184.8 torr. L
T₂ = 669.2 K
9086.3J
Explanation:
Given parameters:
Mass of water = 18.5g
Initial temperature of water = 35°C
Finial temperature = -5°C
Unknown:
Amount of heat given off = ?
Solution:
In converting the water to ice, the water goes through these processes:
35°C to freezing point at 0°C = mcΔT
0°C of water to 0°C of ice = mL
0°C of ice to -5°C = mcΔT
The heat given off;
H = mc₁ΔT + mL + mc₂ΔT
m is the mass of water
c₁ is the specific heat capacity of water = 4.2J/g °C
c₂ is the specific heat capacity of ice = 2.03J/g °C
L is the latent heat of fusion = 334J/g
ΔT = T₂ - T₁ = temperature change
H = 18.5 x 4.2 + (0-(-35)) + (18.5 x 334) + (18.5 x 2.03 x (-5 - (0))
H = 2719.5J + 6179J + 187.8J = 9086.3J
learn more:
Specific heat brainly.com/question/7210400
#learnwithBrainly
Answer:
Conductors allow a flow of current or a charge of flow
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