When sodium is placed in water, the following chemical reaction occurs. 2Na(s) + 2H20 (1) -> 2NaOH (aq) + H2(g)
If a teacher uses a 0.500 gram sample of sodium metal for a demonstration with excess
water, how many liters of hydrogen gas would be produced at STP?

My options are -
0.171
0.243
0.718

Chewy,wrapped,not in all white,the wrapper is clear

Enzyme make a hormone as a catalyst

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.