Sodium hydrogen carbonate (baking soda) decomposes upon heating to form carbon dioxide gas, water, and sodium carbonate. A crucible is a ceramic container that can be used for decomposition reactions since it can withstand high temperatures. To study the decomposition of sodium hydrogen carbonate, you would place a measured amount of sodium hydrogen carbonate in a crucible, heat over a bunsen burner for several minutes, and then mass the cooled product. The following data was collected during this reaction: Item

Mass (g)

Mass of Crucible

19.85

Crucible + NaHCO3

24.04

Crucible + Na2CO3

22.20

Mass of Na2CO3

?

A) Write the complete balanced equation (same rules as question 1)

--> + +

B) Calculate the mass of NaHCO3 used in the experiment: g

C) What is the Theoretical Yield of sodium carbonate (in grams)? g

D) Calculate the actual mass of the sodium carbonate? g

E) Calculate the % yield of the reaction. %

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.