2NBr3 + 3NaOH N2 + 3NaBr + 3HBrO
How many NaBr formula units are formed when 50 NBrz molecules
and 57 NaOH formula units react? (Formula units are the equivalent of
molecules for ionic compounds.)
NaBr formula units

ur answer would be b hope i let me know if it is right

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer