Under the right conditions, a molecule may be formed by sharing two electrons of the same element.

A tank with a height of 100 feet and a constant cross sectional area of 10 ft has a constant input flow of 15 ft /hour of pulp s

kiruha [24]

Answer:

(a) The consistency as a function of time is C=0.15*t.

(b) The tank will become clogged in 24 minutes.

Explanation:

The rate of accumulation of the pulp stock can be defined as

$\frac{dC}{dt}=Q_{i}*C_{i}-Q_{o}*C_{o}$

In this case, Co is 0, because the exit flow is only water and 0% fiber.

$frac{dC}{dt}=Q_{i}*C_{i}-Q_{o}*0=Q_{i}*C_{i}$

Rearranging adn integrating

$dC = (Q_{i}*C_{i})dt\\\int dC = \int (Q_{i}*C_{i})dt\\C=(Q_{i}*C_{i})*t+constant$

At t=0, C=0,

$C=(Q_{i}*C_{i})*t+constant\\0=(Q_{i}*C_{i})*0+constant\\0=constant\\\\C=(Q_{i}*C_{i})*t$

$C=(15*0.01)*t=0.15*t$

(b) The time at when the concentration reaches 6% is 0.4 hours or 24 minutes.

$C=0.15*t\\0.06=0.15*t\\t=0.06/0.15=0.4$

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7 0

3 years ago

At a constant temperature a container of helium gas with an unknown volume changes pressure from 1 atm to 2 atm. If at 2 atm the

ycow [4]

Answer:

7.5 L

Explanation:

Use Boyle's Law and rearrange formula.

- Hope this helps! Please let me know if you need further explanation.

5 0

3 years ago

The unit meter per second per second (m/s²) would be used to measure

Y_Kistochka [10]

Answer:

$\boxed{\text{A) Acceleration}}$

Explanation:

m/s is the unit for speed, so (m/s)/s is the rate of change of speed.

The rate of change of speed is acceleration.

B), C), and D) are wrong. They all have the units of m/s.

5 0

3 years ago

Explain The element lithium has two common isotopes: Li–6 and Li–7 If the average atomic mass of lithium is 6.94004 u, determine

rosijanka [135]

Answer:

%Li-6 = 5.996% & %Li-7 = 94.004%

Explanation:

let X₁ = Li-6 & X₂ = Li-7 where Xₙ = mole fraction

X₁ + X₂ = 1 => X₁ = 1 - X₂

6·X₁ + 7·X₂ = 6.94004

=> 6(1 - X₂) + 7·X₂ = 6.94004

=> 6 - 6·X₂ + 7·X₂ = 6.94004

=> 6 + X₂ = 6.94004

X₂ = 6.94004 - 6 = 0.94004 => %X₂ = %Li-7 = 94.004%

X₁ = 1.00000 - 0.94004 = 0.05996 => %X₁ = %Li-6 = 5.996%

6 0

3 years ago

The value of the equilibrium constant for a reaction

quester [9]

Answer:

a. changes with temperature.

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the equilibrium constant in terms of the Gibbs free energy of reaction and the temperature of the system:

$lnK=-\frac{\Delta G}{RT}$

It is possible to figure out that the equilibrium constant varies as temperature does, not only on the aforementioned definition, but also in the Gibbs free energy as it is also temperature-dependent. Therefore, the appropriate answer is a. changes with temperature.

Best regards!

6 0

3 years ago