Final answer:
A Nestle brand drinking water bottle with 112 ppm of Calcium contains 56 mg of Calcium in a typical 500mL bottle, which is option (a).
Step-by-step explanation:
To calculate how many milligrams of Calcium are in a 500mL bottle of Nestle brand drinking water with 112 ppm of Calcium, you would use the concentration formula. Parts per million (ppm) is equivalent to milligrams of the substance per liter of solution. Since 1 liter is 1000mL, we can calculate that a 500mL bottle of water with 112 ppm of calcium contains 56 mg of calcium, as shown by the calculation below:
(112 mg Ca/L) × (0.500 L) = 56 mg Ca
So, the correct answer is 56 mg of Calcium in a 500mL bottle of Nestle brand drinking water, which corresponds to option (a).