What is the maximum number of electrons that can occupy a box in an orbital filling diagram at any energy level?

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

How to put Roman numerals in a science equation

Bogdan [553]

Example:

Oxygen(III)

6 0

3 years ago

Suppose a scientist proposes a plan to destroy all bacteria on Earth in order to get rid of diseases caused by bacteria. Explain

dimulka [17.4K]

This would not be a good idea because bacteria is everywhere and function as a part of out everyday lives. Starting off with animals, many animals rely on bacteria to digest their food so many animals would begin to die off. Ecosystems would fail due to nitrogen not being able to cycle.
Without bacteria biological waste would build up causing a drop in population, eventually going extinct.
Basically, the balance of nature between humans, animals, and plants would no longer exist.

3 0

3 years ago

C= ( F - 32) / 1.8 86 F = ?

egoroff_w [7]

Hence, 84°F is 30°C in Celsius..

7 0

2 years ago

A 2.61 g sample of a substance suspected of being pure gold is warmed to 72.8 ∘C and submerged into 15.8 g of water initially at

Likurg_2 [28]

mg = 2.42 g
Tg = 72.2 deg.C
mw = 15.8 g
Tw = 24.5
Tf = 27 deg. C
Cw = 4.18 J/g. deg. C

Energy balance for insulated system,
ΔE = 0
ΔUw + ΔUg = 0
ΔUw = - ΔUg
Qin = Qout
mg*cg*ΔTg = mw*cw*ΔTw
2.42*cg*(72.2 - 27) = 15.8*4.18*(27 - 24.5)
cg = 1.5095 J/g. deg.C or 1.5095 J/g.K

5 0

3 years ago