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
SCORPION-xisa [38]
3 years ago
12

If an atom has 34 protons and 40 neutrons, what is its mass number? 40 6 74 34

Chemistry
2 answers:
Darya [45]3 years ago
7 0
Protons+Neutrons
34+40= 74
schepotkina [342]3 years ago
5 0

The answer is 74

The mass equals the number protons and neutrons.

34+40= 74

You might be interested in
How does a nuclear plant operate
slava [35]
A process called fission
3 0
3 years ago
Read 2 more answers
Which reactions are oxidation-reduction reactions? check all that apply. fes(s) 2hcl(aq) → h2s(g) fecl2(g) agno3(aq) nacl(aq)
Dafna1 [17]

oxidation-reduction reactions are -

  1. 2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)
  2. Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

For reaction,

  1. 2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g)

<u>On reactant side</u>:

Oxidation state of Carbon = +2

Oxidation state of Oxygen = 0

<u>On product side:</u>

Oxidation state of Carbon = +4

Oxidation state of Oxygen = -2

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is oxidizing and the oxygen's oxidation state is decreasing from 0 to -2. As a result, it is decreasing.

For reaction,

                Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

<u>When reacting:</u>

Iron's oxidation state is +3.

Carbon's oxidation state is +2.

<u>On product side:</u>

Iron's oxidation state is zero.

Carbon's oxidation state is +4.

Here, carbon's oxidation state is rising from +2 to +4. As a result, it is being oxidized and the iron's oxidation state is changing from +3 to 0. As a result, it is decreasing.

To learn more about oxidation-reduction from given link

brainly.com/question/5794822

#SPJ4

7 0
1 year ago
A long chain of hydrocarbon bonded to cooh is a ________ acid.
vodomira [7]
A long chain of hydrocarbon bonded to COOH is a FATTY acid.
6 0
3 years ago
Read 2 more answers
In terms of their electron configurations, why is cesium more likely to lose its valence electron than potassium?
Harlamova29_29 [7]

Explanation:

use the term electron sheilding, the more electrons between the valence el3ctron and nucleus the easier to lose the valence electron (more sheilding = easier to lose)

5 0
3 years ago
Clouds are formed by the ________ water
tatuchka [14]
Clouds are made of water. When water evaporates it turns into clouds. So, I think the answer is EVAPORATED water.
4 0
3 years ago
Other questions:
  • The name of CuO is --
    5·1 answer
  • What is the wavelength of radio waves that have a frequency of 3.20 x 1010 Hz?
    9·2 answers
  • A hydrogen atom is in its fifth excited state. The atom emits a wavelength photon. Determine the maximum possible orbital angula
    5·1 answer
  • All matter has mass and takes up space.<br> True<br> False
    9·1 answer
  • The time necessary for the decay of one- half sample of a radioactive substance is a _____. mass defect daughter half life nucli
    11·2 answers
  • 0.500 L of a gas is collected at 2911 MM and 0°C. What will the volume be at STP?
    9·1 answer
  • The particles of a substance lose energy and change from
    10·1 answer
  • A student would like to test the effect of eating a lot of candy on
    13·2 answers
  • Hurry 50 points<br> What resource is often compromised due to mining?
    11·1 answer
  • Which are the product(s) of this chemical reaction? FeCl 3 + 3NH 4OH -&gt;
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!