Calculate the Concentration in Ppm of Cd in a 2

question 3

Multiple Choice

Calculate the concentration in ppm of Cd in a 2.00 mL sample which has been shown to contain 16.4 mg Cd. Assume the sample has a density of 1.00 g/mL.

• A) 8.20 × 10^-3
• B) 8.20
• C) 32.8
• D) 8.20 × 10³
• E) 3.28 × 10⁴

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Definitions:

Bomb Calorimeter

An apparatus used for measuring the heat of combustion of a particular reaction.

Combustion

A chemical process involving the rapid oxidation of substances, resulting in the release of energy, light, and heat.

Activation Energy

The minimum amount of energy that must be provided to compounds to induce a chemical reaction.

Pyrolysis

The chemical decomposition of a substance through the application of heat, in the absence of oxygen.