alleryStart learning →In a balanced chemical equation, what is done with a coefficient of 1?
AIt is written as a subscript
BIt is placed after the formula
CIt is normally left out entirely
DIt is placed above the arrow
Answer & Solution
Correct answer: C. It is normally left out entirely
1. A coefficient is the number placed immediately to the left of a formula.
2. It states how many units of that species take part.
3. A coefficient of 1 is understood, so it is normally omitted rather than written.
4. Subscripts belong inside a formula and describe the substance itself, so a coefficient never moves there.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 4 "Stoichiometry of Chemical Reactions", section 4.1 Writing and Balancing Chemical Equations_
Keep practising Stoichiometry of Chemical Reactions
Browse all Stoichiometry of Chemical Reactions questions for NECO SSCE, or explore more Chemistry topics.
Related questions
Pop only the soluble compoundsKnock out the false limiting claimsFill in the percent yield formulaOrder the mass to mass routeBalance the splitting of waterIn the old vinegar test, potassium carbonate was added until bubbling stopped. What gas caBurning 0.00126 g of polyethylene gives 0.00394 g CO2 (44.01 g/mol) and 0.00161 g H2O (18.A 0.4550 g mixture treated with excess Ba(NO3)2 gives 0.6168 g of BaSO4 (233.43 g/mol). Wh