Avogardo's number is a constant, named after the scientist Amedeo Avogadro that represents the number of molecules or atoms that are contained in the amount of substance given by one mole.<span> Na= 6.022×10</span><span>23
Mole on the other hand is </span> a chemical mass unit,defined to be 6.022 x 1023 molecules<span>, </span>atoms, or some other unit. This is the reason why t<span>he mole and Avogadro’s number are now almost synonymous with each other. </span>
It is, as all-stars are, a hot ball of gas made up mostly of Hydrogen. The Sun is so hot that most of the gas is plasma, the fourth state of matter.
Answer:
Atoms are smallest unit of matter
Explanation:
Answer:
The correct answer is B: 125 Nm
Explanation:
If an applied force causes rotation from upward to downward direction than the torque is clockwise and is called as negative clockwise torque. Minus sign represents the direction of the torque. SI unit of torque is Nm.
Given data:
Force = 25 N
r = 5.0 m
Formula:
Torque = r x F
= 5.0 m X 25 N
= 125 Nm
The clockwise torque is 125 Nm ( i.e -125 Nm. Here minus sign suggests that the torque is clockwise)
H2O molar mass= 18.02
Use Avogadro’s constant to convert moles into particles.
71.3x6.02x10^23=429.229
There are 429.229 molecules in 71.3 moles of H2O