Identify an element that is added to glass to give it a higher index of refraction and a more brilliant appearance than soda-lime glass.
A) calcium
B) sodium
C) lead
D) boron
E) potassium
Correct Answer:
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Q51: Identify for the hexagonal unit cell.
A) a
Q52: A common use of polystyrene is
A) tire
Q53: A common use of polyethylene is
A) tire
Q54: Identify a compound that is NOT used
Q55: A common use of polyurethane is
A) tire
Q57: A common use of polyvinyl chloride is
A)
Q58: Identify the condensation polymer.
A) polyurethane
B) polypropylene
C) polyvinyl
Q59: Identify what Kevlar is NOT used for.
A)
Q60: Identify the addition polymer.
A) polyurethane
B) polypropylene
C) polyethylene
Q121: Which type of bonding does Sr form
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