Answer:
819 K
Explanation:
Given data
- Initial pressure (P₁): 1 atm (standard pressure)
- Initial volume (V₁): 250 mL
- Initial temperature (T₁): 273.15 K (standard temperature)
- Final pressure (P₂): 0.500 atm
- Final volume (V₂): 1500 mL
- Final temperature (T₂): ?
We can find the final temperature using the combined gas law.
Answer:
The volume of gas is 58.22 L which will occupy at 250.°C and 680 mm Hg pressure.
Explanation:
Given:
Temperature = 27°C
To make it into kelvin = 27+273
= 300K
Pressure =740mm Hg
to make it in atm. = 
= 0.973atm
n = 2.3 moles
Volume of gas =?
As we know according to the formula
PV = nRT
On substituting the values
= 
= 58.22 L
Therefore, 58.22L volume of gas will occupy at 250.°C and 680 mm Hg pressure.
Answer:
7.5 pounds per square-inch
At sea level, one square-inch of any surface has about 15 pounds of air sitting on top of it. At 18,000 feet, that same square inch has only 7.5 pounds per square-inch (psi) exerted on it.
Explanation:
34.2g of C12H22O11 is dissolved in 180g of H20.
Molar mass of sucrose = 342g/mol
Moles of sucrose = 342 / 34.2 = 10 mol.
Molar mass of water = 18g/mol
Moles of water = 180 / 18 = 10 mol.
For hydrogen atoms, there are 22 * 10 in sucrose and 2 * 10 in water, which gives a total of 240.
For oxygen atoms, there are 11 * 10 in sucrose and 1 * 10 in water, which gives a total of 120.
Answer:
12, basic, 9, basic
Explanation:
pH = -log[H+]
Using the data in the table, you can calculate the pH:
-log[1e-12] = 12
-log[1e-9] = 9
To find out whether it is acidic, basic, or neutral, use a pH scale. Anything less than 7 is acidic, anything over is basic. Knowing this, both will be basic.
