Answer:
The answer to your question is: c
Explanation:
A descomposition reaction is a chemical reaction in which the only one reactant yields two or more products.
a) HCl + NaHCO3 → H2O + CO2 + NaCl
This is not a descomposition reaction because there are two reactants not one, this option is incorrect.
b) 2Na + Cl2 → 2NaCl
THis option is also incorrect because there are two reactants in descompositin reaction there is only one reactant.
c) 2HgO → 2Hg + O2
There are only one reactant that yields 2 products, this is a descomposition reaction.
d) AgNO3 + NaCl → AgCl + NaNO3
THis is not a descomposition reaction because there are two reactants.
Answer: Water molecules make hydrogen bonds
Explanation: The hydrogen bonds in water exclude the nonpolar tails of phospholipids, forcing the molecules into a bilayer
Answer:
The correct answer to your question is letter A
Explanation:
a. [ Ca: ] This structure is correct because Calcium has 2 valence electrons and in this structure we can see them as points to the right side of the symbol.
b. [ Ca ]2+ This option is not correct, in Lewis dot representation, electrons are points and this structure do not show them.
c. No right choice. This option is wrong because letter A is correct.
Answer: i think that it was 800 mg
Explanation: