Which among the following electromagnetic radiations have the lowest frequency?

Microwave

Infra-red

Ultra-violet

Visible light

Which of the following solutions would you use: 11.0 M HCl or 11.0 M NH3?

If the standard reduction potential of a half-cell is positive, which redox reaction is spontaneous when paired with a hydrogen electrode? A. oxidation B. both reduction and oxidation C. reduction D. neither reduction nor oxidation

Chemical reactions can be detected by changes in: a. temperature b. color c. overall mass of the products compared to the mass of the reactants d. density of the products compared to the reactants

Which of the following emperor's made Christianity legal to practice in the Roman Empire

How many atoms of oxygen are in 4.00 moles of N2O5

HNO3 + H2O > H3O (aq) + NO3 - (aq)

What do you get when you mix lemons with gunpowder

What is the mass of 9.92*10^24 molecules of methanol?

How many moles of h2so4 are required to react with 6.80 miles of al2o3

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.