Calculate the wavelength of a photon of light with a frequency of 6.17 x 1014 Hz.

4.86 × 10^-7m

Explanation:

Wavelength = C/f

C (Speed) of light = 3 × 10^8

f = 6.17 × 10^14

Wavelength = (3 × 10^8)/ (6.17 × 10^14)

= 4.86 × 10^-7m

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

14,16 18 reacts with group