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
Ymorist [56]
3 years ago
13

Sandra heated a 12.3-g piece of iron to 100oC. She then placed the iron in a calorimeter with a heat capacity of 10.4 J/oC. The

reading on the calorimeter temperature gauge rose from 25oC to 30oC. How much heat did the piece of iron lose?
A:     2.08 JB:     52.0 JC:     61.5 JD:     861 J
Chemistry
1 answer:
Thepotemich [5.8K]3 years ago
8 0
We first have to find Q calorimeter

Q calorimeter = C (delta T) 

C= heat capacity in J/oC, not small c ( specific heat capacity) 
delta T= change in T (oC) = final T - initial T 

Q calorimeter = 10.4 J/oC (30 oC - 25 oC)
Q calorimeter = 52 J 

Remember, 

Q calorimeter = - Q surrounding
The (-) negative sign stands for heat being released. 

So , 

Q surrounding = - 52 J 

In other words, the iron releases 52 J .

The calorimeter absorbs the entire 52 J and heat rose from 25 - 30 oC. 

Answer: 52 J


You might be interested in
Name the following ester ch3c=ooch3
Pie

Answer:

Iupac name

Explanation:

8 0
3 years ago
Select the correct answer. Which substance is made of polymers? A. marble B. protein C. salt D. steel
Greeley [361]

Answer:

the answer is B proteins

Explanation:

brainliest pls

4 0
3 years ago
Read 2 more answers
Large objects that form dense gravity wells in space A. Galaxies B. Star C. Nebulae D. Black holes.​
BigorU [14]

Answer:

D. Black Holes

Explanation:

Black holes are large objects that form dense gravity wells in space. Their gravitational pull is so strong that even light cannot escape it. 

5 0
3 years ago
Read 2 more answers
Select three parts of a simple electrolytic cell and explain their functions in the space below.
kotegsom [21]
A cathode is the location in an electrolytic cell where reduction reactions take place.

An anode is the location in an electrolytic cell where oxidation reactions occur.

An electrolyte solution is any substance containing free ions that make the substance electrically conductive.

<span>An external electrical energy source like a  battery or a transformer is used to drive the non-spontaneous reaction.</span>
8 0
3 years ago
Describe how urine is removed from the blood and then eliminated from the body
Vlad [161]
Passes through the kidneys and the good stuff is kept, and the other stuff is passed through leading to the bladder.  The once the bladder is full enough to send the message to the brain, urine (waste) is eliminated from the body.
7 0
3 years ago
Other questions:
  • How many hydrogen atoms are attached to each carbon adjacent to a double bond?
    13·1 answer
  • The mass of an object is described in
    5·1 answer
  • Which glacial landforms require more than one glacier to form
    15·2 answers
  • Any help is greatly appreciated!!
    11·1 answer
  • Which fact was most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table that helped Moseley
    13·1 answer
  • A student prepared several aqueous sodium chloride (NaCl) solutions to observe boiling point elevation at various molal concentr
    9·1 answer
  • After transferring the electron, which ion is negatively charged? ________________ Why is the ion negatively charged? __________
    9·1 answer
  • SHOW WORK<br> A dog weighs 15 lbs, what is that weight in oz?
    14·2 answers
  • What is the molarity of 0.25 moles of KBr dissolved into 250 ml of solution?
    9·1 answer
  • Directions: Write the balanced equation for each of the following situations. SHOW ALL OF YOUR WORK ON ATTACHED PAGES, OR IT WIL
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!