You used a variety of media with a NaCl concentration ranging from 0.5% to 15%. Which of these media would have the lowest water activity? a. 0.5% NaCl
b. 15% NaCl
c. 10% NaCl
d. 5% NaCl

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

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?

Chemical engineering who specializes in negotiating for large purchases and instructing customers in use of the products are