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
PolarNik [594]
3 years ago
6

7. An alpha particle is_______

Chemistry
1 answer:
Rainbow [258]3 years ago
4 0

Answer:

b. positively

Explanation:

You might be interested in
How many molecules of water can be produced from 46.72 liters of C8H18? 2\:C_8H_{18}\:+\:25\:O_2\:\:\Longrightarrow\:\:16\:CO_2\
Dmitry [639]

Answer:

1.13×10^25 molecules of water.

Explanation:

Equation of the reaction;

C8H18(g) + 25/2 O2 (g) -------> 8CO2(g) + 9H2O(l)

It is important to first put down the balanced reaction equation. It is not possible to solve any problem on stoichiometric relationship without a balanced reaction equation. Once the equation is obtained, we can now proceed with other steps in the solution of the problem.

From the reaction equation, 1 mole of C8H18 produces 9 moles of water

1 mole of C8H18 occupies 22.4L volume while 1 mole of water contains 6.02×10^23 molecules of water

Hence

22.4 L of C8H18 produces 9(6.02×10^23) molecules of water

46.72 L of C8H18 will produce 46.72 L × 9(6.02×10^23) molecules of water/22.4 L

= 113×10^23 or 1.13×10^25 molecules of water.

5 0
3 years ago
An electric motor turns a belt that powers a pump. If this system is compared to the chemical reactions of the cell, which part
den301095 [7]
The electricity on which the motor runs represents ATP.

ATP, adenosine triphosphate, is the energy currency of the cell. The energy released during the process of respiration is stored in the ATP molecule, and the ATP is stored within cells. Whenever the cell requires energy for any function, it simply hydrolyzes the ATP molecule, breaking a phosphate group off and releasing energy in the process.
7 0
3 years ago
Read 2 more answers
Question 11: How does the energy of a photon emitted when the electron moves from the 3rd orbital to the 2nd orbital compare to
hodyreva [135]

Answer:

Explanation:

The energy of a photon emitted when the electron moves from the 3rd orbital to the 2nd orbital is exactly same as the energy of a photon absorbed when the electron moves from the 2nd orbital to the 3rd orbital

3 0
3 years ago
For the decomposition of calcium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values
In-s [12.5K]

Answer : The temperature in kelvins is, T>1108.695K

Explanation : Given,

\Delta H = 178.5 KJ/mole = 178500 J/mole

\Delta S = 161.0 J/mole.K

Gibbs–Helmholtz equation is :

\Delta G=\Delta H-T\Delta S

As per question the reaction is spontaneous that means the value of \Delta G is negative or we can say that the value of \Delta G is less than zero.

\Delta

The above expression will be:

0>\Delta H-T\Delta S

T\Delta S>\Delta H

T>\frac{\Delta H}{\Delta S}

Now put all the given values in this expression, we get :

T>\frac{178500J/mole}{161.0J/mole.K}

T>1108.695K

Therefore, the temperature in kelvins is, T>1108.695K

7 0
3 years ago
Helppp!!!!!! pleaseeee
Ugo [173]

Answer:

A

Explanation:

you need to make a punnent squere

  L    L

l  Ll   Ll

l   Ll   Ll

5 0
3 years ago
Other questions:
  • HELP PLEASE !!!!! which of the following molecules has a bent shape
    12·2 answers
  • The formation of a solid when two liquids are mixed indicates a reaction.
    11·1 answer
  • A solar cell converts light energy to?
    10·1 answer
  • Scientists must be curious, honest, creative open minded skeptical , ethical and aware of bias. list 3 ways thinking like a scie
    12·1 answer
  • A sample of Xe takes 75 seconds to effuse out of a container. An unknown gas takes 37 seconds to effuse out of the identical con
    6·2 answers
  • Describe two ways that electrons form chemical bonds between atoms.<br><br> HELPPP PLEASEEEE
    9·2 answers
  • How will preventing the inactivation of sodium channels affect the signaling capability of a neuron?
    5·1 answer
  • In group 2A of the periodic table which element likely has the shortest ionic radius
    10·1 answer
  • How many valence electrons would atoms of the element neon have?
    12·1 answer
  • Why does your skin feel drier in winter????​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!