Calculate the molar mass of (NH4)3PO3? Remember to round the atomic mass of each element to the hundredths place. O a 242.00 g/mol 149.10 g/mol 133.12 g/mol 149.12 g/mol ​

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

the answer for sodium is 0.186

the answer for rubidium is 0.251

the temperature of the gas, in k, not celsius.

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