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
How do core electrons relate to the ionization energy of the atom?
Archy [21]

Answer:

For any given element, ionization energy increases as subsequent electrons are removed. For example, the energy required to remove an electron from neutral chlorine is 1251 kJ/mol. ... An even sharper increase in ionization energy is witnessed when inner-shell, or core, electrons are removed.

Hope it helps :)

6 0
3 years ago
What refers to the attractive forces that exist between molecules?​
CaHeK987 [17]
Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.
8 0
3 years ago
1 point
Elina [12.6K]

Answer:

84672 J

Explanation:

From the question given above, the following data were obtained:

Height (h) = 72 m

Combined mass (m) = 120 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Energy (E) =?

We can obtain the energy by using the following formula:

E = mgh

Where

E => is the energy.

g => is the acceleration due to gravity

m => is the mass.

h => is the height.

E = 120 × 9.8 × 72

E = 84672 J

Thus, the energy is 84672 J

6 0
3 years ago
Element used to make first atomic bomb
muminat
The element used to make the first atomic bomb is uranium
5 0
3 years ago
Which one of the following is an alkane?<br><br> A. C2H4<br> B. C5H10<br> C. C3H8<br> D. C4H6
kondaur [170]
Hello

Answer :

C. C3H8
3 0
3 years ago
Other questions:
  • Observation on which fruit has more acidity: lemons, watermelon and oranges
    7·1 answer
  • Aside from Earth, which of the following inner planets once had liquid water on its surface?
    9·2 answers
  • Explain in terms of ions and molecules. what happens when any acid reacts with any alkali
    15·1 answer
  • How does amount of greenhouse gases affect the temperature of the Earth's atmosphere?
    15·2 answers
  • Is the bonds that cause gaseous Cl2 to become liquid when cooled intramolecular or intermolecular
    15·1 answer
  • IF YOU ARE MR.BEAST FAN ANSWER THIS. What do waves transfer?
    12·2 answers
  • Baking soda (NaHCO3, 84.0 g/mol) requires acids from other ingredients to generate the carbon dioxide needed to make bread rise.
    5·1 answer
  • Plz help me with these three please please !!!!!
    14·1 answer
  • Which of the following is created when solids, liquids, or gases mix together with one another?
    15·1 answer
  • If a 2,000-kilogram car accelerates at a rate of 3 meters
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!