The are mostly made of carbon atoms.
Answer: 1)
2) ![H_2PO_4^-](https://tex.z-dn.net/?f=H_2PO_4%5E-)
3) ![RNH_2](https://tex.z-dn.net/?f=RNH_2)
4) ![HCO_3^-](https://tex.z-dn.net/?f=HCO_3%5E-)
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.
1) ![RCOOH\rightarrow RCOO^-+H^+](https://tex.z-dn.net/?f=RCOOH%5Crightarrow%20RCOO%5E-%2BH%5E%2B)
Here,
is loosing a proton, thus it is considered as an acid and after losing a proton, it forms
which is a conjugate base.
2) ![H_3PO_4\rightarrow H_2PO_4^-+H^+](https://tex.z-dn.net/?f=H_3PO_4%5Crightarrow%20H_2PO_4%5E-%2BH%5E%2B)
Here,
is loosing a proton, thus it is considered as an acid and after losing a proton, it forms
which is a conjugate base.
3) ![RNH_3^+\rightarrow RNH_2+H^+](https://tex.z-dn.net/?f=RNH_3%5E%2B%5Crightarrow%20RNH_2%2BH%5E%2B)
Here,
is loosing a proton, thus it is considered as an acid and after losing a proton, it forms
which is a conjugate base.
4) ![H_2CO_3\rightarrow HCO_3^-+H^+](https://tex.z-dn.net/?f=H_2CO_3%5Crightarrow%20HCO_3%5E-%2BH%5E%2B)
Here,
is loosing a proton, thus it is considered as an acid and after losing a proton, it forms
which is a conjugate base.
Use a proportion ...
<span>100.0g - 38.67g - 13.86g = 47.47g Oxygen </span>
<span>285.0 mg = 0.285g </span>
<span>47.47/100 = x/0.285g </span>
<span>x = ( 47.47/100) X 0.285g </span>