Which of these equations is balanced?
a. h2o co > h2co3
b. 2nacl h2so4 > na2so4 2hcl
c. 2cao h2o > ca(oh)2
d. mn fe > mns fe?

Why does a red shoe appear red in daylight

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor