Answer:
CaO
Explanation:
Firstly, let’s get the percentage compositions.
The total mass is now = 4.008 + 1.600 = 5.608g
The percentage composition of carbon is thus 4.008/5.608 * 100 = 71.47%
The percentage composition of oxygen is 100 - 71.4 = 28.53%
Now, we divide each percentage by the atomic masses. The atomic mass of calcium is 40 while that of oxygen is 16
Ca = 71.47/40 = 1.78675
O = 28.53/16 = 1.783125
Both values are quite similar and dividing by the smallest will yield same values of 1.
Hence , the empirical formula is caO
Answer:
You could trip down and fall with your phone in your hand, however by accident you may throw your phone before hitting the ground to crack it and when you throw the phone, you could have directly thrown it at the tv and then the phone bounced off the tv caused by impact and hit the ground harshly causing the phone and tv to crack or break in the process and to add you might be also, hurt from the fall. Hope this helps :)
The answer is 20
explanation:
5= 4x
4x5 = 20
E. a small yellow ball that represents the Sun
hope this helps!!
Electrochemical cell representation for above reaction is,
Br-/Br2//I2/I-
Reaction at Anode: Br2 + 2e- → 2Br- (1)
Reaction at Cathode: 2I- → I2 + 2e- (2)
Standard reduction potential for Reaction 1 = Ered(anode) = 1.066 v
Standard reduction potential for Reaction 2 = Ered(cathode) = 0.535 v
Eo cell = Ered(cathode) - Ered(anode)
= 0.535 - 1.066
= -0.531v
Now, we know that ΔGo = -nF (Eo cell) ..............(3)
Also, ΔGo = RTln(K) ..........(4)
Equation 3 and 4 we get,
ln (K) = nF (Eo cell) / RT
= 2 X 96500 X (-0.531)/ (8.314 X 298)
∴ K = 1.085 X 10^-18.