Answer:
0.85 atm
Explanation:
We start by getting the total number of moles of all gases.
Total moles = 0.220 + 0.350 + 0.640 = 1.21 mol
Then we get the fraction of Oxygen moles and multiply by the total pressure;
The pressure of O2 = 0.350 mol / 1.21 mol x 2.95 atm
= 0.85 atm
Answer:
An aqueous solution of 
will be an acid and have a pH of less than 7.
An aqueous solution of 
will be a neutral solution and have a pH equal to 7.
An aqueous solution of 
will be an base and have a pH of more than 7.
Explanation:
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺]
pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.
Thus,
<u>An aqueous solution of will be an acid and have a pH of less than 7.</u>
<u>An aqueous solution of will be a neutral solution and have a pH equal to 7.</u>
<u>An aqueous solution of will be an base and have a pH of more than 7.</u>
The answer should be D. Hope this helps!!
Answer:
3g/cm cube
Explanation:
The most accurate way to calculate the density of any solid, liquid or gas is to divide its mass in kilograms by its volume (length × width × height) in cubic metres. The unit for density is kg/m 3. The density of water is approximately 1000 kg/m 3 and the density of air is approximately 1.2 kg/m 3.
15 divide by 5 = 3
