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
ddd [48]
3 years ago
13

Calculate the energy, in joules, to heat two cubes (silver and copper), each with a volume of 10.0cm, from 15 C to 25 C​

Chemistry
1 answer:
Julli [10]3 years ago
8 0

Answer:

For Silver , The heat absorbed = <u>246.75 J</u>

For Copper , The heat is =<u> 343.42 J</u>

<u />

Explanation:

The change in temperature is calculated by:

\Delta T=T_{2}-T_{1}

T2 = 25 C

T1 = 15 C

\Delta T=25-15

\Delta T=10^{0}C

The energy in Joules can be calculated using :

q=mc\Delta T

here , m = mass of the substance

c = the heat capacity

q = heat absorbed / released

We need to calculate the mass , In order to determine the value of "q".

<u>Calculation for Silver :</u>

<u><em>The mass is calculated from the density of the element.</em></u>

density of Silver = 10.5 g/ml (look at the table of density)

Volume of Cube = 10 cm^3 (given)

1 cm^3 = 1 mL

10 cm^3 = 10 mL

The mass can be calculated using the formula:

mass = density\times Volume

mass = 10.5\times 10

mass = 105grams

Insert the value of m , c, T in the equation.

for Silver the value of "c"= 0.235 J/gC (Look at the table)

q=mc\Delta T

q=105\times 0.235\times 10

<u>q=246.75J</u>

<u>Calculation for Copper:</u>

Again first calculate the mass of Copper.

Density of Copper = 8.92 g/ml

Volume = 10 mL

mass = density\times Volume

mass = 8.92\times 10

mass = 89.2grams

Insert the value of m , c, T in the equation.

for Silver the value of "c"= 0.385 J/gC (Look at the table)

q=mc\Delta T

q=89.2\times 0.385\times 10

<u>q=343.42J</u>

You might be interested in
Use the drop-down menus to identify the experimental group with additional nutrients and the control group without additional nu
Paladinen [302]

Answer:

A. 1 to 16

B. 17 to 32

Explanation:

8 0
3 years ago
Read 2 more answers
What is Avogadro's number, and why is it useful? (3 points)
SashulF [63]

Answer:

6.022 x 10²³; it is a conversion factor between moles and number of particles

Explanation:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole of hydrogen  = 6.022 × 10²³ atoms of hydrogen

238 g of uranium = 1 mole of uranium = 6.022 × 10²³ atoms of uranium

By taking ions:

62 g of NO⁻₃ =  1 mole of  NO⁻₃  = 6.022 × 10²³ ions of  NO⁻₃

96 g of SO₄²⁻ = 1 mole of SO₄²⁻ =  6.022 × 10²³ ions of  SO₄²⁻

4 0
4 years ago
Find the number of moles of water that can be formed if you have 230 mol of hydrogen gas and 110 mol of oxygen gas
Verdich [7]

Answer:

220mol.

Explanation:

Water is H2O. Hydrogen gas is H2. Oxygen gas is O2. You have 220mol of O and 460mol of H. O is the limiting reactant. The ratio O:H2O is 1:1. 220*1=220

3 0
3 years ago
HELP PLEASE I WILL GIVE 100 PONTS
pochemuha

Answer:

boiling point

Explanation:

5 0
3 years ago
Read 2 more answers
Where on earth did people decide they wanted to go many years ago
adell [148]

Answer:

Many years ago, people living on the Earth, desired to go to the outer space.

Explanation:

When man initiate to go outer space:

Many times ago, people used to think about the world out of Earth, the space and the sky. These thoughts generated the idea of thinking and imagining the space and the moon.

The idea turned into a movie by Georges Méliès, which was inspired by a book written by Jules Verne. The movie gave the idea to Konstantin Tsiolkovsky, a Russian man to develop many ideas which were implemented by Russia and America to build airplanes and rockets that we see launching at present.

A small though became an idea which gave birth to a new invention through which people live their dreams of going in the outer space. Incredible!

3 0
3 years ago
Other questions:
  • Materials of low mass are combined to form a substance of higher mass during ____. a. fission c. both A and B b. fusion d. neith
    14·1 answer
  • If the first reaction used 0.5 g of copper then how many grams of copper will be produced in the last reaction?
    11·1 answer
  • 30,000 J of heat are added to 23.0 kg of steel to reach a final temperature of 140
    14·1 answer
  • What are four ways that rocks are physically weathered to form soil
    15·2 answers
  • How is the Delta Hf related to the delta H of <br> a reaction?
    10·2 answers
  • Hey I have a chemistry problem pls tell me how do you find the percentage thx...
    11·1 answer
  • Can someone explain me why the molar mass become 90.12 g/mol and when I calculated it's 90 g/mol?​
    12·1 answer
  • Is "A finger got cut off" a inherited or acquired or both.
    11·2 answers
  • If a Cod Fish Parent has 82 Chromosomes in its Body Cells, how many
    15·1 answer
  • What coefficients would balance the following equation?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!