Answer: Protons give the nucleus a positive charge.
Explanation:
Protons - Gives of positive charge
Neutrons - Gives of neutral charge (No charge)
Electrons - Gives off negitive charge
Answer:633.8 KJ
Explanation:
Given
mass of water
Initial temperature
Final temperature
Specific heat of water =4190 J/kg-k
heat of vaporization
Heat required for process=heat to raise water temperature from 20 to 100 +Heat to vapourize water completely
Q=mc
Q=
Q=
Q=
The answer is B. Oxygen dissolves faster when it’s hotter. 40 Celsius is 104 degrees F
protons and neutrons in the atom.
Explanation:
The mass number of an atom of carbon represents the total number of protons and neutrons in the atom.
Mass number = number of protons + number of neutrons.
- The mass of an atom is concentrated in the nucleus of the atom.
- The particles in the nucleus are called nucleons are they are made up of the protons and neutrons.
- Protons are positively charged.
- Neutrons carry no charges.
- Together, they make mass of atom.
- The mass of electrons are negligible
Learn more;
Mass number brainly.com/question/2597088
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Answer:
Option (A).
Explanation:
When a hot and a cold objects come in thermal contact with each other,exchange of heat takes place between them until thermal equilibrium is reached.
In this process thermal energy flows from high temperature to low.
Therefore, when a beaker of boiling water comes in touch with a block of ice,
Thermal energy starts flowing from boiling water to block of ice until equilibrium is established.
Option (A) will be the answer.