Chemistry, 18.11.2019 08:31 Lamr

Determine the final temperature after 52.5 g of copper (c = 0.385 j/gc) at 93.6 c is placed into 225 g of water at 21.3 c.

Answers: 3

Show answers

Answers

Answer from: ramirezdolores

22.82°C

Explanation:

Concept tested: Quantity of heat

We are given;

Mass of copper = 52.5 g Specific heat capacity of copper = 0.385 J/g°CInitial temperature of copper = 93.6 °CMass of water = 225 g Initial temperature of water = 21.3°C

We are required to calculate the final temperature of the mixture.

To answer the question we are going to assume the final temperature is X°C.Then we can use the following simple steps;Step 1: Calculate the amount of heat released by copper;

Q = m × c × ΔT

Since the final temperature is X°C then the change in temperature, ΔT will be (93.6 - X)°C

Quantity of heat released by copper, Q will be;

= 52.5 g × 0.385 J/g°C × (93.6 - X)°C

= 1891.89 - 20.2125X joules

Step 2: Amount of heat gained by water

Specific heat capacity of water = 4.184 J/g°C

Change in temperature = (X-21.3)°C

Therefore;

Q = 225 g × 4.184 J/g°C × (X-21.3)°C

= 941.4X-20051.82 Joules

Step 3: Calculate the final temperature

We know that the quantity of heat released is equivalent to the amount of heat absorbed.

Therefore;

1891.89 - 20.2125X Joules = 941.4X-20051.82 Joules

961.6125X = 21943.71

X = 22.82°C

Therefore, the final temperature is 22.82°C

Answer from: Quest

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃ → 3 nicl₂ + 2 albarium and copper bromideba + cubr → no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn → znso₄ + na

Answer from: Quest

Any vitamins or supplements can be obtained without prescription and are widely used as alternative from western medications. most supplements are not valued by the fda or any other drug and food agencies.

Another question on Chemistry

Chemistry, 22.06.2019 09:20

Explain that newton first law,second law and third law of motion?

Answers: 2

Answer

Chemistry, 22.06.2019 10:50

Someone offer some answers to this, i will give 98 coins and mark as brainliest! i will put the rest of the lab down in the comments,solutions pre-lab questions: in this lab, you will make fruit drinks with powdered drink mix. complete the pre-lab questions to get the values you need for your drink solutions. calculate the molar mass of powered fruit drink mix, made from sucrose (c12h22o11).using stoichiometry, determine the mass of powdered drink mix needed to make a 1.0 m solution of 100 ml. (hint: use molarity = to find the moles of drink mix, then convert moles to grams using a mole conversion.)what mass of powdered drink mix is needed to make a 0.5 m solution of 100 ml?

Answers: 1

Answer

Chemistry, 22.06.2019 13:00

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

Answers: 3

Answer

Chemistry, 23.06.2019 12:30

Can someone solve thierry two problems

Answers: 1

Answer

You know the right answer?

Determine the final temperature after 52.5 g of copper (c = 0.385 j/gc) at 93.6 c is placed into...