An atom of a certain element has 36 protons, 36 electrons, and mass of 84. what is the mass of the atom?

What are the five classes of controlled substances

Draw a structural isomer of ethylcyclohexane that also contains a 6-carbon ring

Which molecule is best described as energy rich because of the amount of energy that can be stored in it and released from it? A. CO2 B. ADP C. H2O D. C6H12O6

What is pH? a. the negative logarithm of the hydroxide ion concentration b. the positive logarithm of the hydroxide ion concentration c. the negative logarithm of the hydrogen ion concentration d.

What happens when energy is transferred through a wave?

What is the net ionic equation for the precipitation reaction between bacl2 and na2so4? a bacl2 (aq + na2so4 (aq? baso4 (s + 2nacl (aq b ba2 + (aq + so42 - (aq? baso4 (s c na + (aq + cl - (aq?

2. A compound with the following composition by mass: 24.0% C, 7.0% H, 38.0% F, and 31.0% P. what is the empirical formula

Why does the burning of magnesium ribbon start the reaction between iron oxide and aluminium when making iron?

Select all the elements that are in the same period as calcium potassium magnesium bromine scandium

Gas y effuses half as fast as o2. what is the molar mass of gas y?