18 Powdered sulfur is yellow, and powdered iron is gray. When powdered sulfur and powdered iron are mixed at 20°C, the powdered iron

(1) becomes yellow (3) remains ionic

(2) becomes a liquid (4) remains magnetic

In the combustion of ethane, what is/are the reactant (s) ? A. CO2 and H2O B. C2H6 and O2 C. O2 and H2O D. CO2 and C2H6

Which of the following is the most important factor when determining a safe speed? A) Number of passengers on your boat B) Distance from the nearest safe shoreline C) Presence of a safe water buoy D) Wind, water conditions and currents

How many atoms are in 9 moles of hydrogen

What is true of a decomposition reaction? The reactants are usually a metal and a nonmetal. The reactants are generally two ionic compounds in an aqueous solution. The addition of energy in the form of heat or electricity is often required.

Define "Mutarotation"

A hydrogen atom contains a single electron that moves in a circular orbit about a single proton. assume the proton is stationary, and the electron has a speed of 7.8 105 m/s.

When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg2+. Which statement is true about this reaction? A. It involves gain of electrons. B. It involves loss of electrons. C. It involves loss of oxygen. D.

Equilibrium reaction chromate

How does food in a fridge cool down

How many electrons would be found in the ion whose symbol is given below? N3-