NES Earth And Space Science (307) Practice Questions - Washington NES Earth And Space Science (307) Exam

Which lab practice is safest when diluting concentrated hydrochloric acid for a mineral reaction test?

Add water to acid quickly while stirring Add acid slowly to water while wearing splash goggles and gloves Smell the acid directly to verify its concentration Neutralize the acid with unknown powdered minerals before labeling it

Correct Answer:

Add acid slowly to water while wearing splash goggles and gloves

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