The answer is 9.
First convert 40 cm into metres.
40cm/100= 0.4 metres
0.4 times 9 = 3.6
Im not sure but is it to do with it state for example water when reached to a certain temperature turns into gas
until there is nothing left
Standard temperature is 273 K
Standard pressure is 1 atm
We use the ideal gas equation to find out density of nitrogen gas in g/L
Ideal gas equation:
Molar mass of
Pressure = 1 atm
Temperature = 273 K
= 1.25 g/L
Therefore, density of nitrogen gas at STP is 1.25 g/L
Option D is the correct answer , 13.5gm of precipitate would result if 50 grams of NaCl at 10 degrees Celsius and its cooled to saturation.
<h3>What is Solubility ?</h3>
the maximum quantity of a substance that will dissolve in a certain quantity of water at a specified temperature.
From the Solubility Graph of NaCl , we can see that the solubility of NaCl at 10 C is around 36.5gm/L.
If it is cooled down to saturation we will see the precipitate forming and that will be equal to the difference of solute present and the solubility.
As it is given that 50gm of solute is present
The precipitate will be 50- 36.5 gm, = 13.5 gm.
Therefore Option D is the correct answer , 13.5gm of precipitate would result if 50 grams of NaCl at 10 degrees Celsius and its cooled to saturation.
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Answer:
53.7kPa
Explanation:
Given parameters:
Total pressure of the mixture = 96.4kPa
partial pressure of hydrogen = 13.4kPa
partial pressure of oxygen = 29.3kPa
Unknown:
partial pressure of methane = ?
Solution:
The total pressure of mixture is equal to the sum of their particles pressures;
Partial pressure of methane = 96.4kPa - (13.4kPa + 29.3kPa)
Partial pressure of methane = 53.7kPa