Answer:
there is rainbow after the rain goes away because there is sun in the sky and that's why there is rainbow in the sky
Explanation:
One of the major events is Volcanos etc...
Answer:
Empirical formula is Cr₂O₃.
Explanation:
Given data:
Percentage of Cr = 68.4%
Percentage of O = 31.6%
Empirical formula = ?
Solution:
Number of gram atoms of Cr = 68.4 / 52 = 1.3
2
Number of gram atoms of O = 31.6 / 16 = 1.98
Atomic ratio:
Cr : O
1.32/1.32 : 1.98/1.32
1 : 1.5
Cr : O = 1 : 1.5
Cr : O = 2(1 : 1.5)
Empirical formula is Cr₂O₃.
0.11031 mg
I think that is the answer
Moles of the sucrose in the reaction is given by mass of sucrose divided by relative formula mass of sucrose,(mass/R.F.M)
R.F.M of sucrose is therefore (12 x12)+(1 x22) +(16 x11) =343
number of moles=10g/342=0.029moles (answer A)