Silver. It is number 47 on the periodic table meaning it has 47 protons. It’s atomic mass is 108. 47+61=108 so it is definitely silver
Answer:
6. C3H2O
Explanation:
C= 12.0107; H= 1.00797; O=15.9994
We calculate:
C= 65.85/12.01=5.48
H= 4.91/1.00=4.91
O=29.24/16.00= 1.82
Later, we divide among the smaller quantity
C=5.48/1.82= 3.01
H=4.91/1.82= 2.70
O=1.82/1.82=1
To minimize the sharp pH shift that occurs when a strong acid is added to a solution, IT IS PRACTICAL TO ADD A WEAK BASE.
When a strong acid is added to a solution, it usually brings about a sharp change in the pH of the concerned solution. To avoid this, one can add a weak base to the solution first. The weak base will serves as a buffer for the strong acid and prevents the solution from experiencing sharp pH variations.
Answer:
H2O-a,e, C6H14 - b,c,d
Explanation:
H2O - (a) KI, e(NaC2H3O2) because they are ionic compounds
C6H14 -(b) C8H18
, (c) grease
, (d) CH3(CH2)12OH because they are mostly un-polar.
Answer:
None of the three salts are soluble.
Explanation:
According to the solubility rule, the carbonates and sulphates of group two elements are insoluble in water.
All three substances mentioned possess very low solubility in water and can be said to be slightly soluble in water. If we compare them with other ionic substances that dissolve readily in water, we can rightly say that they are insoluble in water.
Hence all three substances are insoluble in water.
