What is the charge of a proton, electron and neutron

A sample of chlorine containing isotopes of mass numbers 35 and 37 was analysed in a mass spectrometer how many peaks corresponding to cl2 + were recorded

What is Group 1 nonmetal? Type the symbol

A 25.0-g sample of barium reacted completely with water. What is the equation for the reaction? How many milliliters of dry H2 evolved from 21C and 748mmHg?

Ann propped up a graham cracker in a shallow bowl. She then set up an electric fan to blow on the graham cracker at three different speeds. what is anns dependent variable in this experiment?

How many grams is 3.2 moles of water

Following my previous question: How is it possible for one substance to act both polar and non-polar? How is the polar/non-polar nature of a substance useful?

How is petrol separated from the mixture of hydrocarbons in crude oil?

The following chemical reaction takes place in aqueous solution: MgBr2 (aq) + 2KOH (aq) →Mg (OH) 2 (s) + 2KBr (aq) Write the net ionic equation for this reaction.

How many molecules are in 1.2 moles of H20?

Which of the following is diamagnetic? A) Sn B) Pb 2+ C) I D) N E) All are paramagnetic