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4 years ago

When 0.250 moles of licl are added to 200.0g of water in a constant pressure?

1 answer:

6 0

Lithium Chloride releases 37 kJ of energy per mole when dissolved in water.
Energy released = 0.25 x 37
= 9.25 kJ
= 9,250 J
Temperature change of water may be calculated using
ΔH = mCpΔT
Cp = 4.18 J/g

ΔT = 9,250 / (200 x 4.18)
ΔT = 11.1 °C

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3 years ago

A flat uniform circular disk (radius = 2.00 m, mass= 100

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Answer:

0.5 rad / s

Explanation:

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Let ω₁ and ω₂ be the angular speed of disc and man about the axis

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4 years ago

One of the most important properties of materials in many applications is strength. Two of the qualitative measures of the stren

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To solve this exercise it is necessary to take into account the concepts related to Tensile Strength and Shear Strenght.

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$\sigma = \frac{F}{A}$

Where,

$\sigma =$ Tensile strength

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A = Cross-sectional Area

In the other hand we have that the shear strength is defined as

$\sigma_y = \frac{F_y}{A}$

where,

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In such a way that the material is more resistant to tensile strength than shear force.

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