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2 years ago

What are some of the important funtions of cells

1 answer:

7 0

In biological terms a cells main purpose is to survive but some important functions of cells are 1. Transports ( of molecules) 2. Chemical Reactions ( I.e Metabolism ) including energy conversion 3. reproduction hope this helps!

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You make some iced tea by dropping 325 grams of ice into 500.0 mL of warm tea in an insulated pitcher. If the tea is initially a

lora16 [44]

Explanation:

The given data is as follows.

Mass of ice dropped = 325 g

Initial temperature = $30^{o}C$ = (30 + 273) K = 303 K

Final temperature = $0.0^{o}C$ = (0 + 273) K = 273 K

Now, using density of water calculate the mass of ice as follows.

$m_{ice} = \frac{500 ml \times 1.0 g/mol}{1 ml}$

= 500 g

As the relation between heat energy, specific heat and change in temperature is as follows.

Q = $m \times C_{p} \times dT$

= $\frac{500 g}{18 g/mol} \times 75.3 J/K/mol \times (303 - 273)K$

= 62750 J

Also, relation between heat energy and latent heat of fusion is as follows.

Q = m L

= $\frac{325 g}{18 g/mol} \times 6 \times 10^{3}$

= 108300 J

Therefore, we require $\frac{325 g}{18 g/mol} J$ heat but we have 40774.95 J.

So, $mass_{ice} = \frac{m \times C_{p} \times (T_{f} - T_{i})}{\Delta H_{f}}$

= $\frac{62750 J}{333}$

= 188.4 g

Hence, the mass of ice = 325 g - 188.4 g

= 137 g

Therefore, we can conclude that 137 g of ice will still be present when the contents of the pitcher reach a final temperature.

5 0

2 years ago

PlzzzHelp help help plz

Anna11 [10]

1. False
2. False
3. True
4. True
5. True

5 0

2 years ago

Read 2 more answers

The energy to move water And allow it to change from a to a gas or solid ultimately comes from the

rosijanka [135]

Answer:

Explanation:

Solid

4 0

3 years ago

An upright cylindrical tank with radius 6 m is being filled with water at a rate of 2 m3/min. how fast is the height of the wate

irina1246 [14]

<span>Volume = pir^2h = 36pih Derivative = 36pi dh/dt v' = 2 m^3/min 2 = 36pi dh/dt dh/dt = 0.0177 m/min.</span>

5 0

3 years ago

According to Le Chatelier's principle, increasing the pressure of the system shown below will shift equilibrium to the left (tow

Lina20 [59]

Le Chatelier's principle states that when a change is brought to a system in equilibrium, the equilibrium will shift in a manner to reverse that change.

If the pressure is increased, the system will try to reduce the pressure. The only way it can do this is by producing less gas. Therefore, shifting the equilibrium to the left. Thus, the statement is true.

8 0

2 years ago