What is a number added in front of a formula in order to balance the equation

What is the molar mass, in grams, of a mole of an element equal to? the number of electrons in the element the atomic weight of the element the atomic number of the element the number of neutrons in the element

How do atoms form new substances?

Although the element hydrogen is a non-metal, it is located on the left side of the periodic table. Explain how placing hydrogen in the (other nonmetals section) from the periodic table, relate to its ion charge.

How does botulinum toxin block synaptic transmission?

What is evidence of a physical change. A. ice melts B. silver tarnishes C. biycicle rusts

Which of the following kingdoms in one-celled organisms

Objectives Quiz: A View of Earth 1:Introduction to Earth Science Which of the following describes groundwater? 10

You determine the volume of your plastic bag (simulated human stomach) is 1.05 L. How many grams of NaHCO3 (s) are required to fill this container given a 70.

If 3.00 g of limestone reacted, what mass of calcium chloride would be produced?

Which four quantities a, b, c and d are required to balance the equation ... aMgO (s) + bHCl (aq) = = > cMgCl2 (aq) + dH2O (l)