What is the chemical formula for potassium and selenium

Meteorologists use weather balloons to carry weather instruments high into the atmosphere. When it is first released at Earth's surface, a weather balloon typically appears underinflated.

What are salt? How they are used

What can a drop of liquid mercury be described as?

For each molecule, specify the polarity of the bonds and the overall polarity of the molecule. A central beryllium atom is connected to two chlorine atoms through single bonds. Each chlorine atom has three lone pairs of electrons.

How did Niels Bohr describe electrons in his atomic model?

At which temperature would atoms of a He (g) sample have the greatest average kinetic energy? (1) 25°C (3) 273 K (2) 37°C (4) 298 K

In the reaction, HCl + H2O produces H3O + Cl, what is the conjugate acid

Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms after the benzenediazonium ion is treated with

Sodium chloride is stirred into water to form a solution. in this case, what are sodium chloride and the water?

What can form as a result of a chemical reaction?