6) sodium bicarbonate can be further broken down into simpler substances by chemical means only. therefore, sodium bicarbonate is a( a. element b. compound c. solution d. pure substance

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.