Methane, CH4, can be used as fuel in an automobile to reduce pollution. What is the coefficient of oxygen in the balanced equation for the reaction?

__CH4 (g) + __O2 (g) __CO2 (g) + __H2O (g)

Do simple machines produce more output force greater than the input force

What system of measurement does the u. S. Use

What does the kinetic theory state? A. Atoms and molecules are constantly in motion. B. Atoms move at a constant speed at all temperatures. C. Atoms begin to vibrate when a liquid begins to boil. D. All atomic motion stops when a molecule freezes.

Alkali metals A. Group 1 elements B. elements that make up the f block C. elements of the s and p blocks D. Group 17 elements E. entire set of d-block elements

How many moles are there in 1.09 kg of Al (OH) 3? How many formula units are there in 2.55 g of Pb (CO3) 2?

List all of the species that would have a net attraction to the positive charge: CH4, CH2Cl2, H3O+, H2O, C2H2Cl2, CO2, N3-,

if the units cancel and you are left with only the desired units for the problem, all the rations were set up correctly. True or false?

How many valence electrons are in c4h6br2?

Calculate the empirical formula from the given percent compositions. 82% nitrogen (N), 18% hydrogen (H)

Atoms of different isotopes of the same element differ in their total number of electrons neutrons protons valence electrons