Find the energy of the photon if the frequency is 1.97 * 10^8 s^-1

You are balancing an ionic compound. Let's call it: AB. Ion A has a charge of + 2 and Ion B has a charge of - 3. Therefore, you determine that the ionic compound (AB) will have a ratio of 3 As for every 2 Bs.

An unknown has a chemical formula of C4H10O. When chromic acid was added to the unknown, it turned green. When the Lucas reagent was added to a separate portion of the unknown, it turned cloudy in 5 minutes.

Deepest places on Earth

If increase the amplitude how does the velocity change? (No google)

Which mineral might scratch the mineral fluorite but would not scratch the mineral amphibole

Is MgCO3 a correct chemical formula

Water is an exaple of a mixture because it is made up of hydrogen and oxygen atoms bonded together true or false

Chlorine plus lithium bromide

What is the independent and dependent variable of the sentence" you decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You decide to try to get rid of this slime by adding lemon juice.

M=40g V=31cm^3 what is the density