When non metallic oxide for example SO2 dissolved in water it produces sulphurous acid. SO2 + H2O → H2SO3 When metallic oxide reacts with water it produces Metal hydroxides. Na2O + H2O → 2NaOH
The chemical formula for ammonia is NH3. So first, you need to find the molar mass of ammonia (how many grams in one mole).
N=14g
H3=3g
So one mole of NH3 is 17 grams, you can divide 82.9 grams by 17 grams to find the number of molecules. The answer should be 4.876 moles (molecules) of ammonia. Hope this helps!
Answer:- 27.7 grams of
are produced.
Solution:- The balanced equation is:
![Pb(NO_3)_2+2NaI\rightarrow PbI_2+2NaNO_3](https://tex.z-dn.net/?f=Pb%28NO_3%29_2%2B2NaI%5Crightarrow%20PbI_2%2B2NaNO_3)
let's convert the grams of each reactant to moles and calculate the grams of the product and see which one gives least amount of the product. This least amount would be the answer as the least amount we get is from the limiting reactant.
Molar mass of
= 207.2+2(126.90) = 461 gram per mol
let's do the calculations for the grams of the product for the given grams of each of the reactant:
![28.0gPb(NO_3)_2(\frac{1molPb(NO_3)_2}{331.22gPb(NO_3)_2})(\frac{1molPbI_2}{1molPb(NO_3)_2})(\frac{461gPbI_2}{1molPbI_2})](https://tex.z-dn.net/?f=28.0gPb%28NO_3%29_2%28%5Cfrac%7B1molPb%28NO_3%29_2%7D%7B331.22gPb%28NO_3%29_2%7D%29%28%5Cfrac%7B1molPbI_2%7D%7B1molPb%28NO_3%29_2%7D%29%28%5Cfrac%7B461gPbI_2%7D%7B1molPbI_2%7D%29)
= ![39.0gPbI_2](https://tex.z-dn.net/?f=39.0gPbI_2)
![18.0gNaI(\frac{1molNaI}{149.89gNaI})(\frac{1molPbI_2}{2molNaI})(\frac{461gPbI_2}{1molPbI_2})](https://tex.z-dn.net/?f=18.0gNaI%28%5Cfrac%7B1molNaI%7D%7B149.89gNaI%7D%29%28%5Cfrac%7B1molPbI_2%7D%7B2molNaI%7D%29%28%5Cfrac%7B461gPbI_2%7D%7B1molPbI_2%7D%29)
= ![27.7gPbI_2](https://tex.z-dn.net/?f=27.7gPbI_2)
From above calculations, NaI gives least amount of
, so the answer is, 27.7 g of
are produced.
Answer:
HBr + H2O = H3O+ + Br-
So our conjugate acid is the H3O+ to H2O
Explanation:
A conjugate acid of a base results when the base accepts a proton.
Consider ammonia reacting with water to form an equilibrium with ammonium ions and hydroxide ions:
NH3 (aq) + H2O (l) ⇌ NH4+ (aq) + OH- (aq)
Ammonium, NH4+, acts as a conjugate acid to ammonia, NH3.
A is the answer
Hope it helps :)