***elements become less electropositive and more electronegative in their properties...
B. the ideas about the orbits of planets
Answer: Partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.
Explanation:
The partial pressure of a gas is given by Raoult's law, which is:

where,
= partial pressure of substance A
= total pressure
= mole fraction of substance A
We are given:


Mole fraction of a substance is given by:

And,

Mole fraction of nitrogen is given as:

Molar mass of
= 28 g/mol
Molar mass of
= g/mol
Putting values in above equation, we get:


To calculate the mole fraction of xenon, we use the equation:



Thus partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.
Answer:
58.9 N
Explanation:
The wood is buoyed up by the mass of the water is displaces
wood volume = .030 m^3 = 30 000 cm^3
mass of water displaced = 30 000 g = 30 kg
wood mass = 800 kg/m^3 * .030 m^3 = 24 kg
so tension in string = mg = ( 30 kg - 24 kg) * 9.81 m/s^2 = 58.9 N
Answer:
wrong answer because m=100