Answer = 23.2146762081 pounds.
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13% of 81 = 10.53
10.53 converted to pounds (lbs) = 23.21......pounds
Answer:
D
Explanation:
A The calcium chloride dissolves in solution
B The mass of the solution totals 20 g
C The temperature of the solution is 35 degrees
D The solution became lighter in color
The correct answer would be that <u>the solution became lighter in color.</u>
An increase in temperature can also be considered a sign of a chemical reaction but in this case, the dissolution of calcium chloride in water is in itself exothermic.
A change in the mass of the final solution could also be considered a sign of a chemical reaction but in this case, the total mass equals the addition of the individual masses of the reactant.
The dissolution of calcium chloride in water is not enough as evidence of a chemical reaction. Dissolution can be a physical change of which, the evaporation of the water would retrieve the solute.
<em>A change in color, however, is one of the evidence to establish that a chemical reaction has occurred.</em>
The correct option is D.
<h2>The Answer is option d "polymers"</h2>
Explanation:
- Polymers are also categorized as plastics.
- Polymers are usually soft and ductile that is it can be drawn into wires.
- Polymers have low heat capacity or heat conductivity that is the extent to which a polymer acts as an insulator towards the temperature.
- Polymers can be opaque ( not be seen through), translucent or transparent (to be seen clearly through).
- Hence the right answer is option d "polymers".
Your answer will be 8942.5
Mass! Remember the Law of Conservation of Mass: mass can neither be created nor destroyed.
