The answer is electrons would be attracted to the comb.
Explanation:
The heat gained by the solution = q
where,
q = heat gained = ?
c = specific heat of solution=
Mass of the solution(m) = mass of water + mass of calcium chloride
Mass of water = ?
Volume of water = 50.00 mL
Density of water = 1.00 g/mL
Mass = Density × Volume
m = 1.00 g/mL × 50.00 mL = 50.00 g
Mass of the solution (m) = 50.00 g + 4.51 g =54.51 g
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get:
The heat gained by the solution is 729.126 J.
Heat energy released during the reaction = q'
q' = -q ( law of conservation of energy)
q' = -729.126 J
The heat energy released during the reaction is -729.126 J.
Moles of calcium chloride, n =
The ΔH of the reaction is -17.945 kJ/mol.
Answer:
ddndnndndndkzkaoaoowowjebd
Explanation:
nzndbdnxkskksksjsjsjsjsiisisjs
PV=nRT
p = 1,5atm = 1,5*101325 = 151987,5 Pa
V = 11,9l = 0,0119m3
n = ?
R = 8,314 J/mol*K
T = 20°C = 20+273 = 293K
pV=nRT
151987,5*0,0119 = n*8,314*293
1808,6513=n*2436,002 ||:2436,002
0,7425 = n >>> moles of CO2
1 mole of CO2 = 44g
1 mole of CO2--------------44g
0,7425 moles of CO2----------x
<u>x = 32,67g of CO2</u>
Answer:
'*:*'
Explanation:
I know this looks weird, but
'= electron
*:* equals the nucleus, so 2 protons and 2 neutrons
and then '=electron