CHEMISTRY COLLEGE

For your sink at home, the flow rate in is 5000 units/hr. Accumulation is 2500 units. What is the accumulation rate if the out flow is 60 units/min? multiple choicea) 2400 units/hr b) 400 units/hr c)100 units/hr d) 1400 units/hr e) 3400 units/hr

f) other ____________________

Answers

Answer 1
Answer:

Answer:

  • Option d) 1400 units/hr

Explanation:

Using law of conservation of mass, you can do a mass balance or volume balance:

  • Volume in - Volume out = Volume accumulation

If you divide by time unit, you get flow balance:

  • Volume in / time - Volume out / time = Volume accumulation / time

  • Flow rate in - Flow rate out =  Accumulation rate

Here you have:

  • Flow rate in = 5000 units/h

  • Flow rate out = 60 units/min

        Convert to rate in units/h: (60 units /min) × (60 min/h) = 3600 units/h

        Flow rate out = 3600 units/h

Then:

  • Accumulation rate = 5000 units/h - 3600 units/h = 1400 units/h

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4.289x10^0 as regular numbers

Answers

  • 4.289

Explanation:

4.289 x 10^0 can be written as a regular number by moving the decimal point to the right or left based on the exponent value. Since the exponent is 0, the decimal point does not need to be moved. Therefore, the regular number form of 4.289 x 10^0 is simply 4.289.

In a climatological sense, dryness is a function of both annual rainfall and ________.This a geology question.

Answers

Answer:

In a climatological sense, dryness is a function of both annual rainfall and evaporation

16. Which of the following properties of the elements remain unchanged across#period
A lonivation energy
C Electro negativity
13. Number of shells
D. Nuclear charge​

Answers

Answer:

Number of shells

Explanation:

Across the period on the periodic table, the number of shells remains the same. There is no variation or trend for the number of shells on a period.

  • The number of shell is the energy level corresponding to an atom.
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What is the correct equilibrium constant expression for the following reaction? 3A2 = 2B3 when the reaction started with the initial concentrations of A2 = 3 M and B3 = 2 M and continued until the equilibrium concentrations of A2 = 2.5 M and B3 = 2.5 M

Answers

Answer:

Kc = [B₃]²/[A₂]³  = 0.40

Explanation:

3A₂ ⇄ 2B₃  

Given at equilibrium =>  [A₂] =2.5 and [B₃] = 2.5

Kc = [B₃]²/[A₂]³ = (2.5)²/(2.5)³ = (2.5)⁻¹ = 0.40

A baker touches a pie right after taking it out of the oven. Which statement best explains why the pie feels hot?A.Molecules in the skin move faster than molecules in the pie, so heat is transferred to the pie.
B.Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin.
C.Molecules in the skin move faster than molecules in the pie, so heat is transferred to the skin.
D.Molecules in the pie move faster than molecules in the skin, so heat is transferred to the pie.

Answers

The answer is letter B, because according to the Second Law of Thermodynamics heat can only move from a hotter body to one of colder temperature. So that's your answer: as the molecules in the pie move faster (are hotter) than the ones in the skin, heat is transfered from the pie to the skin.

Answer:

Hello! The answer would be B

"Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin"

Explanation:

:')

Pls answer this question

Answers

Answer:

A carbon dioxide and oxygen

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