Mg(s) + 2 AgNO₃(aq) = Mg(NO₃)₂(aq) + 2 Ag(s)
reaction is :<span> single replacement
hope this helps!</span>
Answer:
H+ and NO3- ions
Explanation:
The Pb²+ ions react with the SO4²‐ ions to form a solid precipitate, i.e. they bond together and undergo a phase change;
On the contrary, the H+ and NO3- ions are aqueous ions before the reaction and the same after the reaction, i.e. they don't change;
Hence, the H+ and NO3- ions are spectator ions
The way to do this type of question is to consider what changes and what doesn't, look at phase changes and oxidation state changes
Answer:
Explanation:
The relation between frequency and wavelength is shown below as:
c is the speed of light having value
Given, Frequency = 1290 kHz = (As 1 kHz = 1000 Hz )
Thus, Wavelength is:
Answer: BaCO3(s) + 2H+(aq) --> Ba+2 + H2O(l) + CO2(g)
Explanation: Net ionic equations show only the species or atoms that participate in the reaction, in this case gas-forming
When solid barium carbonate is combined with excess aqueous hydroiodic acid the reaction that take place is.
BaCO3(s) + 2HI(aq) --> BaI2 (aq) + H2O(l) + CO2(g)
To write a ionic equation is necesary to separte the species that are dissociated in water (ag) and expresed it as ions showing the charge
BaCO3(s) + 2I-(aq) + 2H+(aq) --> Ba+2 + 2I- (aq) + H2O(l) + CO2(g)
Since I- is present in both sides of the reaction, it's eliminated in the net ionic equation, and the final expression is:
BaCO3(s) + 2H+(aq) --> Ba+2 + H2O(l) + CO2(g)
B would be the correct answer