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3 years ago

What makes the great pyramid unusual among the places on antipater’s list?

1 answer:

7 0

Answer : It is only one of those ancient sights which still exist and gives ancient antiquity to the great pyramid in Egypt. It is believed that the pyramids are the definition of prayers that still remains in the heart of the local people.

It is also one of seven wonders of the world that is under world heritage. Pyramids where only found in Egypt and nowhere else.

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A gas occupies 200ml at a temperature of 26 degrees Celsius and 76mmHg pressure. Find the volume at -3degree Celsius with the pr

sergey [27]

Answer:

184.62 ml

Explanation:

Let $p_1, v_1,$ and $T_1$ be the initial and $p_2, v_2,$ and $T_2$ be the final pressure, volume, and temperature of the gas respectively.

Given that the pressure remains constant, so

$p_1=p_2$ ...(i)

$v_1$ = 200 ml

$T_1= 26 ^{\circ}C = 273+26 =299$ K

$T_2= 3 ^{\circ}C = 273+3 =276$ K

From the ideal gas equation, pv=mRT

Where p is the pressure, v is the volume, T is the temperature in Kelvin, m is the mass of air in kg, R is the specific gas constant.

For the initial condition,

$p_1v_1=mRT_1 \\\\mR= \frac{p_1v_1}{T_1}\cdots(ii)$

For the final condition,

$p_2v_2=mRT_2 \\\\mR= \frac{p_2v_2}{T_2}\cdots(iii)$

Equating equation (i), and (ii)

$\frac{p_1v_1}{T_1}=\frac{p_2v_2}{T_2}$

$\frac{v_1}{T_1}=\frac{v_2}{T_2}$ [from equation (i)]

$v_2=\frac{T_2}{T_1} \times v_1$

Putting all the given values, we have

$v_2=\frac{276}{299} \times 200 = 184.62 \; ml$

Hence, the volume of the gas at 3 degrees Celsius is 184.62 ml.

7 0

2 years ago

How does this article relate to me?

mario62 [17]

I cant help unless there is an article..

4 0

3 years ago

Read 2 more answers

12. If a solution has a pH of 3, what would the pOH value of that solution be? *

butalik [34]

Answer:

The correct answer is pOH= 11

Explanation:

From the aqueous acid-base equilibrium we know that

pH + pOH = 14

If we know pH, we can calculate pOH as follows:

pOH = 14 - pH

In this problem, the solution has a pH of 3, so:

pOH = 14 - 3 = 11

8 0

2 years ago

Read 2 more answers

Can someone help me please ?

KiRa [710]

Answer: B

Explanation:

Graph 1 represents an endothermic reaction, Graph 2 represents an exothermic reaction.

***If you found my answer helpful, please give me the brainliest. :) ****

3 0

2 years ago

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Which of the following electron configurations correspond to an excited state? Identify the atoms and write the full, ground sta

Aleksandr [31]

I think it’s 1s22s23p1 not sure doe

8 0

2 years ago