List three new materials chemists have developed that have medical applications

A neutralization reaction has what two reactants? A - acid and base B - - hydrocarbon and water C - acid and salt D-hydrocarbon and base

How many grams do 3.6*10^20 atoms of silicon weigh?

Why the is ratio of magnesium ions to chloride ions in MgCl2 is 1:2?

Choose three scientists that were involved in developing atomic theory

Compared to an atom of C-12, an atom of C-14 has a greater number of electrons number of protons atomic number mass number

Two students design an experiment to see if pushing or pulling a box across the floor is more effective. The first student pushes the box across the floor a distance of 20 feet and the second student times how long it takes.

15.00 g of NH4HS (s) is introduced into a 500. mL flask at 25 °C, the flask is sealed, and the system is allowed to reach equilibrium. What is the partial pressure of ammonia in this flask if Kp = 0.108 at 25 °C for: NH4HS (s) ⇄ NH3 (g) + H2S (g) ?

Among elements 1-18, which element or elements have the smallest effective nuclear charge if we use the equation zeff=z-s to calculate zeff? check all that apply.

Two clear solutions are placed in separate beakers. The first solution has a pH of 4, and the pH of the second solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have

Based on its location on the periodic table, which element (s) have properties similar to N? Choose all that apply. * P C O Bi