Question

what is the formula for sodium hydrogen carbonate? what is the formula for sodium cyanide? what is the formula for sodium hydrogen sulfate?

Explanation:

Step1: Recall sodium ion and hydrogen carbonate ion

Sodium has a +1 charge ($Na^+$) and hydrogen carbonate (bicarbonate) has a - 1 charge ($HCO_3^-$).

Step2: Determine the formula

The charges balance out, so the formula is $NaHCO_3$.

Step3: Recall sodium ion and cyanide ion

Sodium has a +1 charge ($Na^+$) and cyanide has a -1 charge ($CN^-$).

Step4: Determine the formula

The charges balance, giving the formula $NaCN$.

Step5: Recall sodium ion and hydrogen sulfate ion

Sodium has a +1 charge ($Na^+$) and hydrogen sulfate has a -1 charge ($HSO_4^-$).

Step6: Determine the formula

The charges balance, resulting in the formula $NaHSO_4$.

Answer:

Sodium hydrogen carbonate: $NaHCO_3$
Sodium cyanide: $NaCN$
Sodium hydrogen sulfate: $NaHSO_4$