Answer:
The half reaction occurring at this electrode will be given as:
Explanation:
In electrochemical cell reduction occurs at anode.
But the gold wire is connected to the positive terminal of the battery which means that gold wire will act as a cathode nad reduction will take place
The half reaction occurring at this electrode will be given as:
Answer: NaCl; Sodium Chloride
Explanation:
Answer:
Explanation:
The formula for the heat released is
q = mCΔT
Data:
m = 395 g
C = 4.184 J·°C⁻¹g⁻¹
ΔT = 55 °C
Calculations:
q = 395 × 4.184 × 55 = 91 000 J = 91 kJ
The water will absorb 
of energy.
The mole fraction of solute in a 3.87 m aqueous solution is 0.0697
<h3>
calculation</h3>
molality = moles of the solute/Kg of the solvent
3.87 m dissolve in 1 Kg of water= 1000g
find the moles of water= mass/molar mass
that is 1000 g/ 18 g/mol= 55.56 moles
mole of solute = 3.87 moles
mole fraction is = moles of solute/moles of solvent
that is 3.87/ 55.56 = 0.0697
Outcome (dependent) variable-drinking energy drinks
Test (independent) variable- more aggressive
