Write as a proportion, showing the relationship of both given information: 68.0g 0.3g ---------- = ----------- 1L x ( your answer)
Cross multiply: 68.0g× X = 0.3g × 1L 68.0g (X)= 0.3g/L Solve for X by dividing both sides by 68.0 g 68.0g (X) = 0.3g/L ------------- ------------------ 68.0g 68.0g
Then enter into calculator 0.3/68 and that will be your solution. Make sure you round up.