Answer:
The correct option is;
A warm front is approaching the city and temperatures will increase
Explanation:
A low pressure forms by the movement of air away from a particular spot such that the pressure reduces. The movement of air away from a spot occurs when there is a boundary of warm and cold air such that the air moves to maintain a uniform temperature.
Low pressure centers are associated with warm fronts, resulting in the fall of barometric pressure or observed low pressure and are characterized by a rise in temperature.
Answer:
Can you post the pic to it so I can give you more info?
Explanation:
Answer:
Mg2+
NH4+
are cations because of there positive charge
Explanation:
-He is a noble gas and have no formal charge therefor it is not a cation
-cl- and o2- have a negative formal charge so they are called anion
Answer:
10
Explanation:
The 5 will multiply the subscript 2 on the K atoms making it 10
<u>Answer:</u> The change in internal energy of the gas is 29.414 kJ.
<u>Explanation:</u>
To calculate the temperature of the gas at different volumes, we use ideal gas equation:
- When volume =
We are given:
Conversion used: 
Putting values in above equation:
- When volume =
We are given:
Putting values in above equation:
- To calculate the change in internal energy, we use the equation:
where,
= change in internal energy = ?
n = number of moles = 4.0 mol
= heat capacity at constant volume = 
= final temperature = 1095.06 K
= initial temperature = 505.41 K
Putting values in above equation, we get:
Converting this value in kilojoules, we use the conversion factor:
1 kJ = 1000 J
So, 
Hence, the change in internal energy of the gas is 29.414 kJ.
