Question

what is the first step in mass spectrometry as described in the summary? * mixing the sample with water cooling the sample heating the sample transferring the sample to the gas phase and ionizing it

Explanation:

In mass - spectrometry, the first step is to transfer the sample to the gas phase and ionize it. This is necessary to create charged particles that can be separated and detected based on their mass - to - charge ratio. Mixing with water, cooling, or heating are not the first steps in the general mass - spectrometry process.

Answer:

Transferring the sample to the gas phase and ionizing it