Answer:
Antibiotic resistance happens when the germs no longer respond to the antibiotics designed to kill them. That means the germs are not killed and continue to grow. It does not mean our body is resistant to antibiotics.
Answer:
A.PbCl2
C.Cl2
Explanation:
are the products in the given chemical reaction.
Hope it helps you in your learning process
Answer:-
0.3 moles
Explanation:-
According to the question,
Volume of nitrogen gas V = 6.8 litres.
Pressure of nitrogen gas P = 100 kPa.
Temperature of nitrogen gas T = 273 K.
We know the value of universal gas constant R = 8.314 litres kPa K−1 mol−1
Using the relation
PV = nRT
We have Number of moles of nitrogen gas n = P V / RT
= 100 kPa x 6.8 litres / ( 8.314 litres kPa K−1 mol−1 x 273 K)
= 0.3 mol
Thus there are 0.3 moles of nitrogen gas in 6.8 liters at standard temperature and pressure (273 K and 100 kPa)
Answer:
d i think sorry if im worng
Explanation:
He contains the largest number; Fe contains the smallest number.
One mole of anything contains the same number (Avogadro’s number) of particles as one mole of anything else, so all we must do is decide which sample contains the most moles.
Moles = mass/molar mass or n = m/MM
Thus,
No. of atoms ∝ n ∝ 1/MM.
The element with the smallest molar mass, He, has the largest number of atoms.
The element with the largest molar mass, Fe, has the smallest number of atoms.
