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docker41 [41]
3 years ago
5

Dr. Terror has developed a new alloy called Ultranomium. He is testing a bar that is 1.25 m1.25 m long and has a mass of 382 g.3

82 g. Using a carbon‑dioxide infrared laser, he carfully heats the bar from 20.6 ∘C20.6 ∘C to 288 ∘C.288 ∘C. Answer the two questions below, using three significant digits. Part A: If the bar absorbs 89300 J89300 J of energy during the temperature change, what is the specific heat capacity ( cc ) of the Ultranomium?
Chemistry
1 answer:
MrRissso [65]3 years ago
4 0

Answer:0.8742j/g°C

Explanation: SOLUTION

GIVEN

length of bar=1.25m

mass 382g

temperature= 20°C to 288°C

Q=89300J

Specific Heat Capacity  will be calculated using

Q=mC∆T

where

C = specific heat capacity

Q = heat

m = mass

Δ T = change in temperature

C=Q/ m∆T

=89300/382X(288-20.6)

=0.8742j/g°C

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How many grams of agcl would be needed to make a 4. 0 m solution with a volume of 0. 75 l?
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430 g of AgCl would be needed to make a 4.0m solution with a volume of 0.75 L.

<h3>What is Molarity?</h3>
  • The amount of a substance in a specific volume of solution is known as its molarity (M).
  • The number of moles of a solute per liter of a solution is known as molarity.
<h3>Calculation of Required amount of AgCl</h3>

Remember that mol/L is the unit of molarity (M).

We can compute the necessary number of moles of solute by multiplying the concentration by the liters of solution, according to dimensional analysis.

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