Question 17
metal ions in water can react with soap to form
a)acid-base indicators
b)detergents
c)salts
d)soap

Metal ions in water can react with soap to form salts. ( option C)

Explanation:

Soaps have the general formula (RCO2−)nMn+ (Where R is an alkyl, M is a metal and n is the charge of the cation).

C17H35COO- Na+

The class of soaps is determined by the identity of Mn+. Those can be mettalic or lithium soaps.

Let's consider those metals are calcium or magnesium ions, dissolved, with soap, in the water, we'll find that the sodium ion (Na+)  at the polar end of the soap molecule is replaced by a metal ion such as calcium or magnesium ion. This will result in a salt, ( better said an insoluble fatty acid) salt.

This can be shown with the following reaction:

2 C17H35COO- Na+ + Ca2+  → (C17H35COO)2Ca + 2Na+

This results in Calcium stearate, which is the calciumcarboxylate  (calcium salt) of stearic acid.

Metal ions in water can react with soap to form salts.

answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )