4Fe+3O2<br><br> I really have no idea how to do this.. HELP

ZILLDIFFEQMODAP11 3.1.021. My Notes Ask Your Teacher A tank contains 150 liters of fluid in which 10 grams of salt is dissolved.

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Answer:

Therefore, the number of grams of salt in the tank at time t is $A(t) = 150-140 e^{-\frac{t}{30} }$

Explanation:

Given:

Tank A contain $V_{1} = 150$ lit

Rate $\alpha = 5 \frac{L}{min}$

Dissolved salt $A = 10$ gm

Salt pumped in one minute is $4 \frac{L}{min}$

Salt pumped out is $\frac{5L}{150L} = \frac{1}{30}$ of initial amount added salt.

To find $A(t)$

$\frac{dA}{dt} = Rate _{in} - Rate _{out}$

$A' = 5 - \frac{A}{30}$

$A' + \frac{A}{30} = 5$

Solving above equation,

$I .F = e^{\int\limits {p} \, dt }$

$y = e^{\int\limits {\frac{1}{30} } \, dt }$

$y = e^{\frac{t}{30} }$

$(Ae^{\frac{t}{30} } )' = 5 e^{\frac{t}{30} } + c$

Integrating on both side,

$Ae^{\frac{t}{30} } = 5 \times 30 e^{\frac{t}{30} } +c$

Add $e^{-\frac{t}{30} }$ on above equation,

$A = 150 + ce^{-\frac{t}{30} }$

Here given in question, $A(t=0) = 10$

$10 =150 +c$

$c = -140$

Put value of constant in above equation, and find the number of grams of salt in the tank at time t.

$A(t) = 150-140 e^{-\frac{t}{30} }$

Therefore, the number of grams of salt in the tank at time t is $A(t) = 150-140 e^{-\frac{t}{30} }$

7 0

3 years ago

You carefully place lettered candy with the letters facing up in water. Without disturbing the water, you notice the letters flo

allochka39001 [22]

Oil-based food coloring used to make the letters, won't dissolve in water. According to some sources, oil-based food coloring is either insoluble or immiscible in water. Because it is present in more solutions, water serves as the universal solvent.

<h3>Universal solvent:-</h3>

A substance that displaces most compounds is known as a universal solvent. Because it dissolves more chemicals than any other solvent, water is known as the universal solvent.

<h3>What chemicals lack solvability?</h3>

Sand, plastic, wood, metal, glass, and cloth are examples of insoluble materials. At standard conditions of pressure and temperature, these compounds never dissolve in water or any other solvent. Other examples of insoluble materials are sugars and inorganic salts.

Learn more about universal solvent here:-

brainly.com/question/24453293

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2 years ago

What are the 6 branches of chemistry? With the definition and examples.

netineya [11]

Answer:

Listed below

Explanation:

Analytical chemistry: using quality and quantity observations to identify and measure physical and chemical properties of substances.EXAMPLE: medical diagnosis

Physical chemistry: Combination of physics and chemistry. EXAMPLE:nitric acid eating through wood.

Organic chemistry: Studying of compounds containing carbon in them. EXAMPLE: there are different products that make use of this type of chemistry for example perfumes,gasoline and many more.

Inorganic chemistry: Studies materials without carbon i them. EXAMPLE: Metals AND Gases.

Biochemistry: studies chemical processes occurring in living organisms. EXAMPLE: Human bodies and muscles

Theoretical chemistry: provides explanations to chemical and physical observation. EXAMPLE: Concepts of chemical reactions

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5 0

4 years ago

What is the approximate age of the oldest fossils of early human ancestors?

Vesna [10]

Answer:approx 300,000 years ago

Explanation:

Fossils attributed to H. sapiens, along with stone tools, dated to approximately 300,000 years ago, found at Jebel Irhoud, Morocco yield the earliest fossil evidence for anatomically modern Homo sapiens

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3 years ago

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Which of the following is composed of weathered rocks and decomposed organic material from dead plants and animals?

Amanda [17]

Soil is made from dead plants, animals, and rocks.

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4 years ago

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4Fe+3O2 I really have no idea how to do this.. HELP