Choose the word that best completes this sentence. welding in confined spaces or on stainless steel generates a very toxic chemical.
a. carbon monoxide
b. hexavalent chromium
c. hydrogen sulfide
d. solvent vapors

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i