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
Soloha48 [4]
2 years ago
15

An unknown piece of metal weighing 95.0 g is heated to 98.0°C. It is dropped into 250.0 g of water at 23.0°C. When equilibrium i

s reached, the temperature of the water and piece of metal is 29.0°C. Determine the specific heat of the metal. Assume the heat capacity of the container, a styrofoam cup, is negligible.
Chemistry
1 answer:
lutik1710 [3]2 years ago
7 0

Answer:

C_{metal}=126.6\frac{J}{g\°C}

Explanation:

Hello!

In this case, when two substances at different temperature are put in contact and an equilibrium temperature is attained, we can evidence that the heat lost by the hot substance (metal) is gained by the cold substance (water) and we can write:

Q_{metal}=-Q_{water}

Which can be also written as:

m_{metal}C_{metal}(T_{EQ}-T_{metal})=-m_{water}C_{water}(T_{EQ}-T_{water})

Thus, since we need the specific heat of the metal, we solve for it as shown below:

C_{metal}=\frac{m_{water}C_{water}(T_{EQ}-T_{water})}{-m_{metal}(T_{EQ}-T_{metal})} \\\\C_{metal}=\frac{250.0g*4.184\frac{J}{g\°C}(29.0\°C-98.0\°C)}{95.0g(29.0\°C-23.0\°C)} \\\\C_{metal}=126.6\frac{J}{g\°C}

Best regards.

You might be interested in
____H2 + ____O2 ---&gt; ____H20<br><br> 2, 1, 1<br> 2, 2, 1<br> 2, 1, 2<br> 1, 2, 2
Tems11 [23]
2H2+O2----->2H2O. I hope this helps
6 0
3 years ago
Read 2 more answers
When assigning electrons to orbitals, which would be the most likely 'address' for the next electron following the 5s2 electron?
Bess [88]
The answer is number 3, 4d1.
4 0
3 years ago
Read 2 more answers
10 POINTS : What are 4 things created from Big Bang?
Leno4ka [110]

Answer:

:0

Explanation:

One second after the Big Bang, the universe was filled with neutrons, protons, electrons, anti-electrons, photons and neutrinos.Jun 17, 2017

6 0
3 years ago
How many moles of electrons is required to deposit 5.6g of iron from a solution of iron (2) tetraoxosulphate(6)
yuradex [85]

Answer:

0.20 mol

Explanation:

Let's consider the reduction of iron from an aqueous solution of iron (II).

Fe²⁺ + 2 e⁻ ⇒ Fe

The molar mass of Fe is 55.85 g/mol. The moles corresponding to 5.6 g of Fe are:

5.6 g × 1 mol/55.85 g = 0.10 mol

2 moles of electrons are required to deposit 1 mole of Fe. The moles of electrons required to deposit 0.10 moles of Fe are

0.10 mol Fe × 2 mol e⁻/1 mol Fe = 0.20 mol e⁻

7 0
3 years ago
Calculate the empirical formula of a compound that has a composition of 5.9% (by mass) hydrogen and 94.1% (by mass) oxygen.​
adelina 88 [10]

Answer:

The empirical formula is the simplest form;

Given:

Oxygen O at 94.1% and

H at 5.9%

Assume 100grams.

94% = 0.941 x 100gm. = 94.1 gm x 1mole/16gm. = 5.88 moles of O

5.9% = 0.059 x 100gm. = 5.9gm. X 1moleH/1.002gm. = 5.88 moles of H

There is one mole of O for each mole of H so the empirical formula is O_1H_1

and written as OH.

8 0
3 years ago
Read 2 more answers
Other questions:
  • You throw a barbeque for your friends. Before you start the grill, your propane tank has a pressure of 78 psi. When you’re finis
    6·2 answers
  • Controlled nuclear chain reactions A. take place in nuclear reactors. B. are always fusion reactions. C. never produce radioacti
    5·1 answer
  • Victor pours 100 grams of oil into a beaker filled with 1,000 grams of water. What is the total mass of his mixture? A. 100,000
    5·2 answers
  • An orange has a mass of 359 grams . How many kilograms is this?
    5·1 answer
  • Simplify 8k-5(-5k+3)
    15·1 answer
  • BRAINLIESTTT ASAP!! PLEASE ANSWER :)
    5·2 answers
  • How many electrons are transferred in the iconic bond between sodium abd chlorine in naci?
    15·1 answer
  • The mass of one Be atom is
    6·1 answer
  • the bunsen burners in your labs are fueled by natural gas which is mostly methane. the thermochemical equation for the combustio
    5·1 answer
  • Which describes the greatest difference between gases and solids?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!