When a volcano erupt, what suggestion can you give to those people living near in the area. A. use a mask
B. stay outdoor
C. watch an ash fall
D. go to a near hot spring​

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

Which of the following is the molecular formula for a simple sugar? a. cooh b. h2o c. oh d. c6h12o6