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3 years ago

What 2 properties make capillary action possible

Chemistry

1 answer:

Natali5045456 [20]3 years ago

7 0

Cohesion and adhesion

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Five kilograms of liquid carbon tetrachloride undergo a mechanically reversible, isobaric change of state at 1 bar during which

Drupady [299]

Answer:

Explanation:

From the information given:

Mass of carbon tetrachloride = 5 kg

Pressure = 1 bar

The given density for carbon tetrachloride = 1590 kg/m³

The specific heat of carbon tetrachloride = 0.84 kJ/kg K

From the composition, the initial volume of carbon tetrachloride will be: $= \dfrac{5 \ kg }{1590 \ kg/m^3}$

= 0.0031 m³

Suppose $\beta$ is independent of temperature while pressure is constant;

Then:

The change in volume can be expressed as:

$\int ^{V_2}_{V_1} \dfrac{dV}{V} =\int ^{T_2}_{T_1} \beta dT$

$In ( \dfrac{V_2}{V_1}) = \beta (T_2-T_1)$

$V_2 = V_1 \times exp (\beta (T_2-T_1))$

$V_2 = 0.0031 \ m^3 \times exp (1.2 \times 10^{-3} \times 20)$

$V_2 = 0.003175 \ m^3$

However; the workdone = -PdV

$W = -1.01 \times 10^5 \ Pa \times ( 0.003175 m^3 - 0.0031 \ m^3)$

W = - 7.6 J

The heat energy Q = Δ h

$Q = mC_p(T_2-T_1)$

$Q = 5 kg \times 0.84 \ kJ/kg^0 C \times 20$

Q = 84 kJ

The internal energy is calculated by using the 1st law of thermodynamics; which can be expressed as;

ΔU = ΔQ + W

ΔU = 84 kJ + ( -7.6 × 10⁻³ kJ)

ΔU = 83.992 kJ

3 0

3 years ago

Is lithium ionization energy high low or medium?

satela [25.4K]

It’s soft which makes It low energy

6 0

2 years ago

Read 2 more answers

Hello people ~

Natalija [7]

Answer:

Opposes the motion

Explanation:

Let's take an example

Suppose you kicked a ball and the ball is doing down the ground
The friction makes the ball to stop after sometime .
So it opposed the ball's motion

option A is correct

8 0

2 years ago

if i initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if i increase the pressure to 3.4 atm

Lelechka [254]

Answer:

<h3>The answer is 1.29 L</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{4 \times 1.1}{3.4} = \frac{4.4}{3.4} \\ =1.294117647...$

We have the final answer as

Hope this helps and

6 0

3 years ago

Explain where the energy in an ecosystem comes from and how it is distributed to all living things in that ecosystem.

pochemuha

It is simple, just set up a router and electrical box

3 0

2 years ago