Answer:
D
Explanation:
Scientists always perform tests and observe and measure in the physical world to prove their points or answer their questions.
Answer:
A
Explanation:
Sodium has 11 electrons and Magnesium has 12 electrons. Since here you need to consider atoms, they must have equal amount of protons as electrons to be considered neutral, and so an atom.
So simply 11+12 =23
Answer:
I think the answer is 138.11 gram
Explanation:
Answer:
A) wrong. The molar is same so A is hevier
B)
Explanation:
Xg/mol × (same molar)= g
→ bigger molar bigger mass
Answer:
The answer to your question is T = 7.25 °K
Explanation:
Data
Temperature = ?
moles = 0.80
volume = 275 ml
pressure = 175 kPa
constant of ideal gases = 0.082 atm l/ mol °K
Process
1.- Use the ideal gas law to solve this problem
PV = nRT
-Solve for Temperature
T = PV / nR
2.- Convert Pressure to atm
1 atm --------------- 101.325 kPa
x --------------- 175 kPa
x = (175 x 1) / 101.325
x = 1.73 atm
3.- Convert volume to liters
1000 ml ---------------- 1 l
275 ml ----------------- x
x = (275 x 1) / 1000
x = 0.275 l
4.- Find the temperature
T = (0.275 x 1.73) / (0.8 x 0.082)
-Simplification
T = 0.476 / 0.0656
-Result
T = 7.25 °K
