Acids have a pH less than 7 (pH < 7)
Bases have a pH more than 7 (pH > 7)
A pH of 7 would be neutral
Hope this helped!
Answer:
Radium
Explanation:
It has the highest atomic number so it would have more shells, making it larger than the others.
Answer:
33.6 L
Explanation:
From the question given above, the following data were obtained from:
Initial volume (V1) = 8.40 L L
Initial pressure (P1) = P
Initial temperature (T1) = T
Final pressure (P2) = one-half the original pressure = ½P
Final temperature (T2) = double the original temperature = 2T
Final volume (V2) =.?
Thus, the new volume of the gas can be obtained as follow:
P1V1/ T1 = P2V2 /T2
P × 8.40 / T = ½P × V2 /2T
P × 8.40 / T = P × V2 / 4T
Cross multiply
T × P × V2 = P × 8.40 × 4T
Divide both side by T × P
V2 = (P × 8.40 × 4T) /T × P
V2 = 8.40 × 4
V2 = 33.6 L
Thus, the new volume of the gas is 33.6 L
Answer:
The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.
Explanation:
Boyle's law says that: "The volume occupied by a certain gaseous mass at constant temperature is inversely proportional to pressure" and is expressed mathematically as:
P * V = k
where k is a constant.
Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. So Charles's law is a law that mathematically says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

Gay-Lussac's law states that the pressure of a fixed volume of a gas is directly proportional to its temperature. In other words, if the volume of a certain quantity of ideal gas remains constant, the quotient between pressure and temperature remains constant:

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

Considering an initial state 1 and a final state 2, it is satisfied:

In this case:
- P1: 240 kPa
- V1: 70 mL
- T1: 300 K
- P2: 160 kPa
- V2: ?
- T2: 150 K
Replacing:

Solving:

V2= 52.5 mL
<u><em>The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.</em></u>
Answer:
Our Solar System may be home, but researchers are now discovering that it's not really much like the other kids. According to a survey of 909 planets orbiting 355 stars, our home planetary system is a little on the dishevelled side - and others are a lot more orderly.
Explanation: