1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zolol [24]
3 years ago
12

A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.

3 0 Calculate the initial temperature of copper (Cs = 0.385 J/g 0C for copper, and 4.18 J/g 0C for water).
Chemistry
1 answer:
zysi [14]3 years ago
7 0

Answer:

The initial temperature of the metal is 84.149 °C.

Explanation:

The heat lost by the metal will be equivalent to the heat gain by the water.  

- (msΔT)metal = (msΔT)water

-32.5 grams × 0.365 J/g°C × ΔT = 105.3 grams × 4.18 J/g °C × (17.3 -15.4)°C

-ΔT = 836.29/12.51 °C

-ΔT = 66.89 °C

-(T final - T initial) = 66.89 °C

T initial = 66.89 °C + T final

T initial = 66.89 °C + 17.3 °C

T initial = 84.149 °C.

You might be interested in
What is the lowest temperature that a substance can reach?
kobusy [5.1K]
Absolute zero that means cooling - 0 degree
3 0
3 years ago
Which element is being represented by the electron configuration below? [Ar] 4s2 3d3
Nina [5.8K]
Answer:
chromium (Cr)
4 0
3 years ago
Duncan takes a break from studying and goes to the gym to swim laps If swimming burns amount of time ? 85 * 10 ^ 5 cal per hour
Volgvan

When 6.85×10⁵ cal is converted to kilojoules, the result obtained is 2866.04 KJ

<h3>Data obtained from the question </h3>
  • Energy (cal) = 6.85×10⁵ cal
  • Energy (KJ) =?

<h3>Conversion scale </h3>

1 cal = 0.004184 KJ

<h3>How to convert 6.85×10⁵ cal to kilojoules</h3>

1 cal = 0.004184 KJ

Therefore,

6.85×10⁵ cal = 6.85×10⁵ × 0.004184

6.85×10⁵ cal = 2866.04 KJ

Thus, 6.85×10⁵ cal is equivalent to 2866.04 KJ

Learn more about conversion:

brainly.com/question/2139943

6 0
2 years ago
When a 120 g sample of aluminum absorbs 9612 of heat energy, its temperature increases from 25°C to 115°C. Find the specific hea
lesantik [10]
<h3>Answer:</h3>

0.89 J/g°C

<h3>Explanation:</h3>

Concept tested: Quantity of heat

We are given;

  • Mass of the aluminium sample is 120 g
  • Quantity of heat absorbed by aluminium sample is 9612 g
  • Change in temperature, ΔT = 115°C - 25°C

                                                      = 90°C

We are required to calculate the specific heat capacity;

  • We need to know that the quantity of heat absorbed is calculated by the product of mass, specific heat capacity and change in temperature.

That is;

Q = m × c × ΔT

  • Therefore, rearranging the formula we can calculate the specific heat capacity of Aluminium.

Specific heat capacity, c = Q ÷ mΔT

                                         = 9612 J ÷ (120 g × 90°C)

                                         = 0.89 J/g°C

Therefore, the specific heat capacity of Aluminium is  0.89 J/g°C

4 0
3 years ago
Other than through sexual reproduction, how can variations in genetic material occur in a population?
melomori [17]

Answer:

Through their adaptations from their habitat; environment

Explanation:

Charles Darwin explains evolution and their genetic material evolves during the process. For example, fruit birds have narrow bills whilst seed-eating birds have big bills. The foods they eat forced their DNA to adapt with the system in order to survive.

5 0
3 years ago
Other questions:
  • In guinea pigs, short hair (H) is dominant to long hair (h). Two heterozygous (hybrid) guinea pigs are crossed. Complete the Pun
    13·1 answer
  • Write the net ionic equation for KNO2 + HCl -&gt; KCl + HNO2
    11·1 answer
  • Pj likes to ride his bike around the block. If he rides out of his house west, the sidewalk circles his block, and brings him ba
    11·1 answer
  • Atoms have a tendency to complete their outer energy level. This is known as _____.
    14·2 answers
  • A chef fills a 50 mL container with 43.5 g of cooking oil. What is the density of the oil?
    6·2 answers
  • For each bond, show the direction of polarity by selecting the correct partial charges. si-p si-s s-p the most polar bond is
    6·1 answer
  • Which solute, an electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each
    14·2 answers
  • 6. Soap contains 76.5% C, 11.3% O, and 12.2% H and the MW = 847, what is the
    5·1 answer
  • The molar mass of dibromomethane (CH2Br2) is larger than the molar mass of dichloromethane (CH2Cl2).
    8·1 answer
  • Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!