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
Hoochie [10]
3 years ago
13

The heat exchange in chemical reactions is due to a change in:

Chemistry
1 answer:
Paha777 [63]3 years ago
5 0

Answer:

B

Explanation:

This would be due to enthalpy. This is because that this where heat exchange happens in chemical reactions.

So, a positive enthalpy means that the reaction is endothermic (heat entering) and if enthalpy is negative this will be a exothermic (heat released)

Another example would be the use of atoms. This example if temperature is the factor, this means that at low temp there is less kinetic energy so low temperature. However, an increase in energy means that there is more kinetic energy in the atoms which means that more collisions occurring.

Hope this helps !!!!

Have a nice day :)

You might be interested in
Someone please help me I got a few minutes
HACTEHA [7]

Answer:

30 feet /second

Explanation:

60 feet/ 2 sec = 30 feet/sec

6 0
3 years ago
Read 2 more answers
Which of the following is an example of a molecule?
xxMikexx [17]
O2 is an example of a molecule
5 0
3 years ago
What is the volume of 1.60 grams of O2 gas at STP? (5 points)
tiny-mole [99]

Answer:

  • <u><em>1.12 liters</em></u>

Explanation:

<u>Calculating number of moles</u>

  • Molar mass of O₂ = 32 g
  • n = Given weight / Molar mass
  • n = 1.6/32
  • n = 0.05 moles

<u>At STP</u>

  • One mole of O₂ occupies 22.4 L
  • Therefore, 0.05 moles will occupy :
  • 22.4 L x 0.05 = <u><em>1.12 L</em></u>
5 0
2 years ago
Read 2 more answers
Geckos and some other animals can climb smooth surfaces. Which of these explanations of this
Marrrta [24]

Answer:

The gecko's feet have tiny suction cups on them that stick to the surface.

4 0
2 years ago
Read 2 more answers
How many molecules of CBr4 are in 250 grams of CBr4
Kazeer [188]

Answer:- 4.54*10^2^3 molecules.

Solution:- The grams of tetrabromomethane are given and it asks to calculate the number of molecules.

It is a two step unit conversion problem. In the first step, grams are converted to moles on dividing the grams by molar mass.

In second step, the moles are converted to molecules on multiplying by Avogadro number.

Molar mass of CBr_4  = 12+4(79.9)  = 331.6 g per mol

let's make the set up using dimensional analysis:

250g(\frac{1mol}{331.6g})(\frac{6.022*10^2^3molecules}{1mol})

= 4.54*10^2^3 molecules

So, there will be 4.54*10^2^3 molecules in 250 grams of CBr_4 .


8 0
3 years ago
Other questions:
  • What is a molarity a measurement
    8·1 answer
  • How much heat energy is required to convert 48.3 g of solid ethanol at -114.5 degree C to gasesous ethanol at 135.3 degree C? Th
    5·1 answer
  • The hydrogen atom of one water molecule bonds with the oxygen atom of another water molecule. What is this bond referred to as?
    6·2 answers
  • A solution of H2SO4(aq) with a molal concentration of 5.74 m has a density of 1.238 g/mL. What is the molar concentration of thi
    15·1 answer
  • What would happen if you didn't have chemical energy in your body
    7·2 answers
  • I need help with this.
    11·2 answers
  • PLEASE HELP!!! I will mark brainliest I am really struggling with these problems
    14·1 answer
  • The source of alpha particles in a smoke detector is the
    11·1 answer
  • To what pH should you adjust a standard hydrogen electrode to get an electrode potential of -0.128 V ? (Assume that the partial
    9·1 answer
  • Substance X is added to the mixture shown below to reduce the __________ __________ of the aluminium oxide in bauxite. What two
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!