Answer:
As a result, electrolyte solutions readily conduct electricity. ... By contrast, if a compound dissociates to a small extent, the solution will be a weak conductor of electricity; ... Typically, nonelectrolytes are primarily held together by covalent rather than ionic bonds. ... Explain why some molecules do not dissolve in water.
Answer:A
Explanation:2 phosphorus and 2 oxygen
I think the answers are A, C, A.
Balanced equation
Mg₃(PO₄)₂ + 2Al(NO₃)₃ → 3Mg(NO₃)₂ + 2AlPO₄
<h3>Further explanation</h3>
Given
Reaction
Mg3(PO4)2 + Al(NO3)3 → Mg(NO3)2 + AlPO4
Required
Balanced equation
Solution
Give a coefficient :
Mg₃(PO₄)₂ + aAl(NO₃)₃ → bMg(NO₃)₂ + cAlPO₄
Make an equation :
Mg, left = 3, right=b⇒b=3
P, left=2, right=c⇒c=2
Al, left=a, right=c⇒a=c⇒a=2
The reaction becomes :
Mg₃(PO₄)₂ + 2Al(NO₃)₃ → 3Mg(NO₃)₂ + 2AlPO₄
Answer:
<u>Physical Properties</u>
Alkali metals are good conductors of heat and electricity while halogens are poor conductors of heat and electricity.
Only specific to Alkali metals: They are soft and can be cut by knife.
<u>Chemical</u><u> </u><u>Properties</u>
Alkali metals have 1 valence electron while halogens have 7 valence electrons.
Alkali metals react with non-metals to form ionic compounds while halogens react with non-metals to form covalent compounds.
You can also look at the trends ( melting/boiling point, reactivity) down their group.
