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
Radda [10]
3 years ago
8

Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of

gold from 22 °C to 85 °C?
Biology
2 answers:
Elodia [21]3 years ago
5 0

Answer:

\boxed {\boxed {\sf 121.905 \ J  }}

Explanation:

We are asked to find the energy given mass, specific heat, and change in temperature. Therefore, we must use this formula;

q= mc \Delta T

The mass is 15 grams and the specific heat is 0.129 J/(g×°C). Let's calculate the change in temperature.

  • ΔT= final temperature - initial temperature
  • ΔT= 85 °C- 22°C = 63°C

Now we know all the values:

m= 15 \ g \ \\c= 0.129 \ J / (g* \textdegree C) \\\Delta T= 63 \ \textdegree C

Substitue the values into the formula.

q= (15 \ g)( 0.129 \ J / (g* \textdegree C)) ( 63 \ \textdegree C)

Multiply the first numbers together. The grams will cancel.

q= (1.935 \ J/ \textdegree C) ( 63 \ \textdegree C)

Multiply again, this time the degrees Celsius cancels.

q= 121.905 \ J

<u>121.905 Joules</u> are required.

astraxan [27]3 years ago
5 0

Answer:Approximately

146.54 joules.

Explanation:

The specific heat equation, which states that:

q=mcΔT

You might be interested in
I will give brainliest. So please answer this correctly!!!
JulijaS [17]
1 is that they both lay eggs hope this helps
5 0
3 years ago
Prokaryotes whose cell walls do not contain peptidogly can
masya89 [10]

Answer:

Archaebacteria

Explanation:

Archaebacteria is a group of single-celled organism present on the earth which are thought to be descended from the ancient bacteria.

These bacteria can survive the extreme or harsh conditions present on the Earth-like in the hot springs.

The archaebacteria cell membrane is made up of ether-linked phospholipids which are ester-linked in Eubacteria and eukaryotes.  The sugar present in the archaebacteria is very similar to peptidoglycan in composition but it is not peptidoglycan.

Thus, Archaebacteria is the correct answer.

4 0
3 years ago
Which icon is used to indicate an attachment in an Outlook email message? Paperclip Message Cabinet Flag.
Inga [223]

Email is the electronic mail that can send and receive messages through the net. An icon used for the file attachment in the mail is a paper clip.

<h3>What is the paperclip icon in the mail?</h3>

Icons are the symbols used for the representation of the activities in the message bar of the email. In the mail, a paperclip is used to represent the attachment for the files.

The Attachment icon allows linking the files from the system in the mail to send. The files can be docx, pdf, png, jpg etc.

Therefore, the option A. paperclip icon is used to indicate an attachment in mails.

Learn more about the paperclip icon and email here:

brainly.com/question/17854423

6 0
2 years ago
In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen
Galina-37 [17]

Answer:

In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen? They move into and out of living systems. process in which chemical energy is used to produce carbohydrates. ... single-essential nutrient that limits productivity in an ecosystem.

Explanation:

3 0
4 years ago
Which is controlled by a negative feedback loop, blood glucose levels after eating or estrogen levels in the days prior to ovula
solong [7]

Answer:

An important example of negative feedback is the control of blood sugar. After a meal, the small intestine absorbs glucose from digested food. Blood glucose levels rise. Increased blood glucose levels stimulate beta cells in the pancreas to produce insulin.

6 0
3 years ago
Other questions:
  • Which statement correctly describes the process that occurs in the thylakoid?
    9·2 answers
  • Help Please!!!!!!
    13·1 answer
  • How does the density of ice compared to that of liquid water and water and why is
    11·2 answers
  • In which two layers does the atmosphere's tempature decrease as the altitude increase?​
    14·2 answers
  • Which of the following processes takes place in the cytosol of a eukaryotic cell?
    11·2 answers
  • biologists believe that a large number of species that are part of the rain forest ecosystem are on the verge of extinction. Whi
    10·1 answer
  • The purpose of the study described in the passage was: A.to determine whether LH can modulate GnRH or NPY secretion. B.to determ
    11·1 answer
  • What is true about a circular orbit?
    5·2 answers
  • What are 5 factors that influence an increase in population (explain each or tell how it is that that factor increases populatio
    6·1 answer
  • What is the type of eruption of sakurajima volcano?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!