is the number of total atoms on the left side of a balanced equation always equal to the number of total atoms on the right side of the equation?

Which of the following reactions involves two or more substances combining to form a new compound?

Within the same period of the periodic table how do the properties of elements close to each other compare with the properties of elements far from each other

Will upvote! Calculate the molar mass of SiO2, show your work by entering the atomic mass in the proper boxes. Molar mass of SiO2 = ... ? g/mol Si + 2 * ... ? g/mol O = ... ? g/mol SiO2 (total)

Consider NH3 and PH3. Electronegativities: P = 2.1, H = 2.1, N=3.0. Which statement is false? The bond dipoles in NH3 are directed toward the nitrogen atom. For PH3 there is no bond dipole moment. Both molecules are polar.

Arrange the following compounds in order of increasing solubility in water and explain your sequence: C7H15OH, C6H13OH, C6H6, C2H5OH

Which of the following elements will likely form a negative ion in its ionic compounds?

Calculate the wavelength of the laser light for a) d = 1/500 mm and b) d = 1/1000 mm. Use the modified "grating equation" given below: nλ =

What kind of covalent bond involves an even sharing of electrons? A. A polar covalent bond B. A metallic bond C. A dipole-dipole bond D. A nonpolar covalent bond

Hydrogenous sediments originate from elements in a. cold water. b. seawater. c. warm water. d. freshwater.

234+34.1 add and round to 2 significant figures