Jika 3 resistor (2 Ω, 3 Ω, 6 Ω) dipasang paralel, berapa resistansi totalnya?
Answer (4)
NaHCO₃ is an ionic compound which is made from Na⁺ and HCO₃⁻ ions. The decomposition is
** NaHCO₃ → Na⁺ + HCO₃⁻ **
Among the resulted ions,** Na⁺ is a monatomic ion** while** HCO₃⁻ is a polyatomic ion.**
Polyatomic ions mean ions which are made of two or more different atoms.
HCO₃⁻ is made from** 3 atoms** as H, C and O . The name of HCO₃⁻ ion is bicarbonate or hydrogen carbonate.
The compound represented by the formula NaHCO₃ contains the polyatomic ion called hydrogen carbonate. This ion is derived from carbonic acid (H₂CO₃) when it loses one hydrogen ion (H+), resulting in the formation of HCO₃-. Sodium bicarbonate is a common name for this compound, and it is often used in baking as a leavening agent.
To identify the correct polyatomic ion in NaHCO₃ , one needs to consider the composition of the compound. Na denotes sodium, which is a monatomic ion with a 1+ charge. So, the remaining part, HCO₃, must be the polyatomic ion that balances the charge, and it is known as hydrogen carbonate. None of the other options (acetate, hydrogen sulfate, or oxalate) align with the composition presented by HCO₃ . Hence, the correct answer is (2) hydrogen carbonate.
The polyatomic ion found in the compound N a H C O 3 is the hydrogen carbonate ion, also known as bicarbonate. Therefore, the correct answer is option B (hydrogen carbonate).
;
Jawaban:Diketahui:Rangkaian paralel : 1/R total=1/R1 +1/R2 +1/R3.......R1=2 ΩR2=3 ΩR3=6 ΩDitanya:R total=...?Jawab:1/R total=1/2 + 1/3 + 1/6 =3/6 + 2/6 + 1/6R total =6/6 = 1 ΩPenjelasan:
