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olya-2409 [2.1K]
2 years ago
12

Number atomic of protactinium

Biology
1 answer:
Setler [38]2 years ago
5 0
The atomic number of protactinium is 91
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A plastic bottle contains 32.5 L of gas at a pressure of 45.7 kPa and
Monica [59]

Answer:

Final pressure, P2 = 362.26 kPa

Explanation:

Given the following data;

Initial volume = 32.5 Liters

Initial pressure = 45.7 kPa

Final volume = 4.1 Liters

To find the final pressure, we would use Boyle's law;

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

PV = K

P_{1}V_{1} = P_{2}V_{2}

Substituting into the equation, we have;

45.7 * 32.5 = P_{2} * 4.1

1485.25 = 4.1P_{2}

P_{2} = \frac {1485.25}{4.1}

P_{2} = 362.26

Final pressure, P2 = 362.26 kPa

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2 years ago
Which type of cells are considered to be the building block of all multicellular organisms . A: prokaryotic
denis-greek [22]
Answer: D - Eukaryotic

Explanation: Can not be A, B or C

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- Bacterial cells are prokaryotes and unicellular
- Not all multicellular organisms are plants and are therefore not all made of plant cells
4 0
3 years ago
Read 2 more answers
I actually need so much help with this, I’ll give extra points just PLEASE HELP
suter [353]
#2 is an exponential graph, #3 is linear horizontal, #4 is like graph 1, #5 is linear upwards but slowly, #6 like number 5, #7 like number 1, #8 like number 1
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2 years ago
Oxygen is taken into the lungs during which process
Semmy [17]
The process by which oxygen is taken to the lungs is called Inhalation or Inspiration. 

4 0
3 years ago
A 20 kg box has been lifted 0.7m. How much work has been done?
Serga [27]
The work done is 137 joules.

Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.

20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)

4 0
3 years ago
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