Answer:answer anyone ????
Explanation:
speed of light=wavelength*frequency
3*10^8m/s=wavelength*1.20*10^13
wavelength=3*10^8/1.2*10^13
=10^-5/0.4=2.5*10^-5m
Answer:
C E F G
Explanation:
1s2 2s2 2p2 is carbon element, group 4 so A is false, it is not a noble gas so B is false, P-block elements are from 13 to 18 so carbon is included so C is true, S-block elements are columns 1 and 2 and Helium so carbon not included so D false, it is in period 2 so E true, has 2 energy levels so F true, it is a representative element so G is true
Glucose and a plants and ur welcome
The molar mass of Li->7g/mol
If 1mol of Li is 7g/mol
1.50mol of Li would be 10.5g/mol
