Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
Answer 6
Explanation: That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons.
Answer:
3) Rubidium reacts with rubidium nitrate to produce rubidium oxide and nitrogen gas
a- Write the chemical reaction
10Rb + 2RbNO3 → 6Rb2O + N2
An adiabatic process is one that involves no heat transfer. Work done is the relationship between work and the change in internal energy in an adiabatic process.
In the case of an adiabatic process heat transfer is zero ( Q = 0 ), so internal energy is equal to the Work done.
According to the 1st law of Thermodynamics;
Q= ΔU + W
In an adiabatic process: Q= 0
So,
ΔU= -W
The first law of thermodynamics with Q=0 shows that all the change in internal energy is in the form of workdone.
When we apply force "F" to a block, the body moves with some acceleration or, moreover, its speed increases or decreases depending on the direction of the force. The system's kinetic energy changes as speed increases or decreases.
Since we are aware that energy cannot be created or destroyed, it must be changed into another form. This perspective refers to it as completed job.
When negative energy is finished, the energy declines, and when positive energy is finished, the energy rises. Now that we understand how to assess work done,
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Answer:
A
Explanation:
Redox reactions are comprised of two parts, a reduced half and an oxidized half, that always occur together. The reduced half gains electrons and the oxidation number decreases, while the oxidized half loses electrons and the oxidation number increases.
