Identify the charge on the atom or ion that has one proton, zero neutrons, and zero electrons. A.-2
B.1
C.-4
D.0
E.2
F.-1
G.-3
H.4
I.3

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3