-which of the following elements would be expected to gain electrons and form negative ions when forming and ionic compound?
a). Calcium(Ca) b). Iron(Fe) c). Argon(Ar) d). Sulfur(S)
-The mass of one mole of NaCl is equal to
a). its gram formula mass b). its atomic number c). its atomic mass d). all of these
-what is the mass of 0.25 moles of silicon dioxide, SiO2? (gfm SiO2 = 60.0g)
a). 15g b). 44g c). 0.0042g d). 240g
- how many grams of calcium fluoride (CaF2) are there in 2.50 moles?
a). 31.2g b). 146g c). 195g d). 23.6g
a). Calcium(Ca) b). Iron(Fe) c). Argon(Ar) d). Sulfur(S)
-The mass of one mole of NaCl is equal to
a). its gram formula mass b). its atomic number c). its atomic mass d). all of these
-what is the mass of 0.25 moles of silicon dioxide, SiO2? (gfm SiO2 = 60.0g)
a). 15g b). 44g c). 0.0042g d). 240g
- how many grams of calcium fluoride (CaF2) are there in 2.50 moles?
a). 31.2g b). 146g c). 195g d). 23.6g