If an element has 4 protons and 5 neutrons its mass number is

How do I use the prefix multipliers to express each measurement without any exponents?

Several types of RNA are involved in carrying out protein synthesis. Beginning with the information copied from DNA, in what order do the types of RNA carry out their roles? mRNA, tRNA, rRNA mRNA, rRNA, tRNA tRNA, mRNA, rRNA tRNA, rRNA, mRNA

A student is trying to dissolve 20 grams of sugar in a beaker containing 250 milliliters of water at room temperature. What can the student do to make the sugar dissolve faster in the water? a. decrease the temperature of the water b.

Which of the following relates to an electrolyte? The dissociation of KOH into K + and OH - ions when added to water. Most salts as long as they are soluble in water (consult the solubility chart).

Under which conditions would the solubility of a gas be greatest? A. high pressure and high temperature B. high pressure and low temperature C. low pressure and high temperature D. low pressure and low temperature

Which sub-layer thins out into space, where there is no air

Complete and balance the molecular equation, including phases, for the reaction of aqueous ammonium bromide, nh4br, and aqueous lead (ii) acetate, pb (c2h3o2) 2.

A magnesium atom has 2 valence electrons in its third shell. Which is a TRUE statement about what happens when it forms an ion? A. It will be an anion. B. It will have more electrons than protons. C.

What scientific discoveries led to changes in Dalton's atomic theory?

What does berkelium react with