What observation would indicate that an endothermic reaction is occuring in a beaker

An over-the-counter medicated foot powder contains camphor, eucalyptus oil, lemonoil, and zinc oxide. Only one of the ingredients is antimicrobial. Which one? How does it act against fungi? The zinc oxide is the antimicrobial in the foot powder.

Definition of isotopes

What is the formula for chalcocite copper (i) sulfide

Which of the following has the longest life a dwarf star a giant star a supernova or the sun.

The atomic mass of an element is the weighted average of the atomic masses of

What is the best category for nf3? 1. amphoteric ion 2. lewis acid 3. salt 4. bronsted-lowry acid 5. arrhenius acid 6. arrhenius base 7. lewis base 8. weak electrolyte?

100 g = ___hg for science

A real gas behaves more like an ideal gas when the gas molecules are

How many moles are in 12.5 g of H2O

Substance which allows energy to pass through it