A scientist spilled a few drops of dilute hydrochloric acid (HCI) on a
lab table. For safety purposes, the scientist sprinkled some baking
soda (NaHCO3) onto the spill. Which observation would provide the
best evidence that a chemical reaction occurred?

Steve baking soda and hydrochloric acid combined,and bubbles formed

if you can give me brainliest that would be great

14 days is the half-life of phosphorus-32

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.