I think it’s A , they have special functions it could be in animals & humans
Yes (Al) Aluminum and (S) Sulfur would make an ionic compound because you need a metal and a nonmetal to make an ionic compound.
To
determine the empirical formula of the compound given, we need to
determine the ratio of the elements present in the compound. To do that we use the given amount of sample
of the compound and the masses of each of the element included. Then, we calculate for the number
of moles of each element. We do as follows:<span>
mass moles
Potassium 5.81 0.1486
Chlorine 5.27 0.1487
Oxygen 18.21 - 5.81 - 5.27 = 7.13 0.4456
Dividing the number of moles of each element with
the smallest value of number of moles, we will have the ratio of the elements:</span>
K = 1 Cl = 1 O = 3
Therefore, the empirical formula would be KClO3.
Answer:
100,000,000,000
Explanation:
Given that :
1 hubble space telescope pointed at 1 section of the sky reveals 10,000 distinct galaxies ;
Number of sections from which observation is to be made = 10,000,000
Number of distinct galaxy per section = 10,000
Number of galaxies that would exist in the known universe :
Total number of galaxies in the known universe :
Number of galaxies per section * number of sections
10,000 * 10,000,000
= 100,000,000,000s