Answer:
-4.35 × 10^-6 N
Explanation:
i just answered it on ap3x :)
Answer:
option b ) is correct
Explanation:
Let d be the distance in km from the place of lightning . velocity of sound is 340 m /s approx
in km/ s it is 0.34 km/s
time in sec taken by sound to cover a distance of d km
d / .34 = t
d = .34 t
d =
d = t / 3
so option b ) is correct . ,
Answer:
C).
Explanation:
As we know if temperature of the gas remains constant then
now we will have
P = initial pressure due to gas
initial volume of the gas is
now we know that side of the box is increased by 4 times
so new volume is
now we have
now we have
Use of electromagnetic because it moves very faster than others for example xrays theynar very very slow so that not It it is d.
The balanced chemical reaction is expressed as:
<span>2Al(s)+3FeO(s)->3Fe(s)+Al2O3(2)
</span>
We are given the amount of FeO to be used in the reaction. This amount will be the starting point for our calculations. It is as follows:
1.2 mol FeO ( 2 mol Al / 3 mol FeO) = 0.8 mol Al needed to react completely