Which si unit would be most appropriate for describing the lengeth of the shoe?
1 answer:
You might be interested in
- The chemical name for reactant side:
Al - Aluminium, Pb(NO3)2 - Lead(II) nitrate.
- The chemical name for product side:
Al(NO3)3 - Aluminium nitrate, Pb - lead.
<u>Explanation</u>:
- This is an oxidation-reduction (redox) reaction:
3 + 6 e- → 3
(reduction)
2 - 6 e- → 2
(oxidation)
Pb(NO3)2 is an oxidizing agent, Al is a reducing agent.
- Reactants:
Al uminium
Names: Aluminum, Aluminium powder, Al
Appearance: Silvery-white-to-grey powder, Silvery-white,
malleable, ductile, odorless metal.
Pb(NO3)2 – Lead(II) nitrate
Other names: Lead nitrate, Plumbous nitrate, Lead dinitrate
Appearance: White colorless crystals, White or colorless crystals
- Products:
Al(NO3)3 – Aluminium nitrate
Other names: Nitric Aluminum salt, Aluminum nitrate,
Aluminium(III) nitrate
Appearance: White crystals, solid | hygroscopic
Pb - lead
Names: Lead, Lead metal, Plumbum
Appearance: Bluish-white or silvery-grey solid in various forms.
Turns tarnished on exposure to air. A heavy, ductile,
soft, gray solid.
Answer:
q = - 2067.2 J of Heat is giving out when 85.0g of lead cools from 200.0 c to 10.0 c.
Explanation:
The Specific Heat capacity of Lead is 0.128
This means, increase in temperature of 1 gm of lead by will require 0.128 J of heat.
Formula Used :
q = amount of heat added / removed
m = mass of substance in grams = 85.0 g
c = specific heat of the substance = 0.128
= Change in temperature
= final temperature - Initial temperature
= 10 - 200
= -
put value in formula
q = -
On calculation,
q = - 2067.2 J
- sign indicates that the heat is released in the process