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
otez555 [7]
3 years ago
7

How many neutrons does element X have if its atomic number is 43 and its mass number is 164?

Physics
2 answers:
Brilliant_brown [7]3 years ago
7 0
The atomic number is 43. This means it is Technetium. If its mass number is 164, then the number of neutrons is: 164 - 43 = 121. It has 121 neutrons.
Drupady [299]3 years ago
6 0
Hello, 
The mass number is protons+neutrons=mass number. In this case, we have protons+nuetron=164.The atomic number is simply the number of protons so we have 43+neutrons=164. Subtracting 43 from both sides we get nuetrons=121. Hope this helps!
You might be interested in
Which question would most likely fill in the blank
Citrus2011 [14]
Definitely not the last 2. My bet is on the first option. If it is wrong don't hit me please...
8 0
3 years ago
HELP!
Angelina_Jolie [31]

Answer:

speed is increasing.

this is because the graph has a positive slope (due to it going up ), if it were decreasing, the graph would be going down

4 0
3 years ago
Read 2 more answers
Pressure __________ with depth to support the fluid weight above
eduard

Answer:Hydrostatic

Explanation: I think this is the answer, not sure. Sorry

5 0
3 years ago
Compare and contrast electric potential energy and electric potential difference? Explain.
forsale [732]

Answer:

<u><em>Electric Potential Energy:</em></u>

The energy that is needed to move a charge against an electric firld is called Electric Potential Energy

<u><em>Electric Potential Difference:</em></u>

The amount of work done in carrying a unit charge from one point to an other in an electric field is called Electric Potential Difference.

<u><em>Relation:</em></u>

Relation between Electric potential and electrical potential energy is given by

\delta V=\frac{PE}{q}

Here PE represents Electric potential energy

and \delta V is Electric potential difference

it means electric potential difference is the difference in electric potential energy divided by the charge.

6 0
3 years ago
During adverse weather conditions such as rain or fog, drivers should take action accordingly by turning on their headlights, sl
xeze [42]
<span>During adverse weather conditions such as rain or fog, drivers should take action accordingly by turning on their headlights, slowing down and increasing following distance. Adverse weather means that you are driving in difficult and dangerous conditions. Increasing following distance will help you to maintain safe driving and avoid tailgating. </span>
4 0
3 years ago
Other questions:
  • A rowboat has a momentum of 241.5 kg*m/s. if the rowboat has a mass of 115kg, what its it's speed?
    12·1 answer
  • When you turn off a light switch, you create an open circuit.<br> True<br> False
    15·2 answers
  • Explain why the elements nitrogen, oxygen, and hydrogen are often found in both the Earth's atmosphere and crust.
    6·1 answer
  • Olivia wants to find out whether a substance will fluoresce. She says she should put it in a microwave oven. Do you agree with h
    12·2 answers
  • Ohm's law relates the current, voltage, and resistance in a circuit. Use Ohm's law to determine what will happen to the remainin
    9·2 answers
  • True or false? Scientific theories lack experimental support
    10·1 answer
  • A rocket generates a net force (F) of 2,050,000 newtons, and the rocket’s mass (m) is 40,000 kilograms. Use the formula F = ma t
    8·2 answers
  • Which of the following is proportional to the net external force acting on a body?
    7·1 answer
  • A system gains 767 kJ of heat, resulting in a change in internal energy of the system equal to +151 kJ. How much work is done?
    10·1 answer
  • How much thermal energy does it take to raise the temperature of 2.5 kg of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!