Answer:
109.2g
Explanation:
First, let us obtain the number of mole of lithium fluoride in the solution. This is illustrated below:
Molarity of lithium fluoride (LiF) = 3.5M
Volume = 1.2L
Number of mole of LiF =?
Molarity = mole/Volume
Mole = Molarity x Volume
Number of mole LiF = 3.5 x 1.2
Number of mole LiF = 4.2 moles
Now let us convert 4.2 moles to grams in order to obtain the desired result. This illustrated below:
Molar Mass of LiF = 7 + 19 = 26g/mol
Number of mole of LiF = 4.2 moles
Mass of LiF =?
Mass = number of mole x molar Mass
Mass of LiF = 4.2 x 26
Mass of LiF = 109.2g
Therefore, 109.2g of lithium fluoride is required.
D. A disadvantage of nuclear power is that waste products are unsafe and hard to store. They must be stored for many hundreds of years before they becomes safe and easier to dispose of, and we currently don't have a good method of storing them in the meantime.
The type of substance that is most likely to contain a covalent bond is ONE THAT IS COMPOSED OF ONLY NON METALS.
Covalent bond is a type of chemical bond in which electron pairs are shared among the participating elements in order to achieve the octet form. Covalent bond is usually found among non metals.
