Answer:
What is the formula for elevation in boiling point?
Explanation:
The elevation in boiling point (ΔTb) is proportional to the concentration of the solute in the solution. It can be calculated via the following equation. Where, i is the Van't Hoff factor.
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Boiling Point Elevation Formula.
Solvent Kb value (in oC.kg.mol-1)
Chloroform 3.63
Benzene 2.53
Answer:
what I'm not really understand this question
The correct statement : The atomic number of the radioactive nuclide is 90.
<h3>Further explanation</h3>
In the following element notation,
X = symbol of elemental atom
A = mass number
= number of protons + number of neutrons
Z = atomic number
= number of protons = number of electrons, on neutral elements
The symbol for a radioactive nuclide :
atomic number = 90
mass number = 234
number of neutrons = 234-90=144
number of protons = atomic number = 90
Idk 18 but here is 20
conductor-a substance that readily conducts
insulator-a substance that does not readily allow the passage of heat or sound
ammeter-an instrument for measuring electric current in amperes.
voltmeter- an instrument for measuring electric potential in volts
current-a flow of electricity which results from the ordered directional movement of electrically charged particles.
potential difference-the difference of electrical potential between two points.
ohmic resistor- resistors that have a constant resistance
non-ohmic resistor- a resistor that's resistance increases as the current increase
power-the capacity or ability to direct or influence the behavior of others or the course of events.
