In redox reaction electrons are transferred
Redox reaction involve both reducing of b agent and oxidizing agent. reducing agent acts as electrons donor while oxidizing agent acts as electron acceptor
for example formation of Hydrogen fluoride (HF)
that is H2 + F2 = HF
by breaking the equation
H2 = 2 H^+ 2e-
F2 + 2e= 2f-
hydrogen move from oxidation from zero( 0 )to positive one ( +1 )therefore hydrogen is oxidized. Fluorine move from oxidation state of zero(0) to oxidation state of negative one(-1) therefore fluorine is reduced.
142 kg in grams:
1 kg ---------- 1000 g
142 kg -------- ?
142 x 1000 / 1 => 142000 g
Atomic mass Cu = 63.54 a.m.u
Therefore:
63.54 g ------------ 6.02x10²³ atoms
142000 g --------- ??
142000 x ( 6.02x10²³) / 63.54 =
8.54.10²⁸ / 63.54 => 1.34.10²⁷ atoms of Cu
Answer:
The volume increases,
Final volume is 2.1L
Explanation:
Based on Boyle's law, the absolute temperature of a gas is directly proportional to the volume of the gas.
As the balloon change increases its temperature, the volume increases
The Boyle's equation is:
V1T2 = V2T1
<em>Where V is volume and T is absolute temperature of 1, initial state and 2, final state of the gas.</em>
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Replacing:
V1 = 2.0L
T2 = 35°C + 273.15 = 308.15K
V2 = ?
T1 = 25°C + 273.15 = 298.15K
2.0L*308.15K = V2*298.15K
2.1L = V2
<h3>Final volume is 2.1L</h3>
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