Answer:
moles are equal to the coefficients infornt of chemical equations knowing the moles can help so much when finding either grams or the volumes
Answer:
BrF3 has 2 lone pairs (4 unshared electrons)
Explanation:
It is 20 because then you will put 30 inside of 20milimeeter and put 70 years into the other pint and put it learnt into the cup
2Na + 2H2O ----> H2 + 2Na(OH)
48.7/23 = 2.12 moles sodium
2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles
1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen