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

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.