Answer:
No
Explanation:
Filling a beaker 200ml of water is not bad because Each beaker's capacity may vary according to the size of different beaker.
Answer:
none of the above
Explanation:
because all of them are unstable
Answer:
False
Explanation:
I really have a strong hunch about my answer ,try that out....
HOPE IT HELPS YOU PO !!!!
First step: calculate the number of moles of sodium reacted
moles=mass/molar mass
31.5g/23g/mol =1.37moles
from the reaction above the reacting ratio of Na to H2 is 2:1 therefore moles of H2 is 1.37/2=0.685
At STP 1 mole = 22.4L what about 0.685 moles
22.4 x0.685=15.344L
Answer:
a) Yes, these bands of signals overlap.
b) FM has broader transmission band.
Explanation:
a) Frequency range of TV channels = 59.5 to 215.8 MHz
Wavelength range of FM radio = 2.78 m to 3.41 m
Frequency of the wave = 
Wavelength of the wave = 
Speed of light = c = 

Frequency of wave with, 


Frequency of wave with, 


Frequency range of FM = 87.89 to 107.9 MHz
Frequency range of TV channels = 59.5 to 215.8 MHz
Yes, these bands of signals overlap.
b)
Frequency range of AM = 550 to 1600 kHz
1 kHz = 0.001 MHz
550 to 1600 kHz =
to 
= 0.55 MHz to 1.6 MHz
Frequency range of AM = 0.55 to 1.6 MHz
Frequency range of FM = 87.89 to 107.9 MHz
FM has broader transmission band.