G A chemist prepares a solution of barium acetate by measuring out 107 umol of barium acetate into a ml 200 volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's barium acetate solution. Round your answer to significant digits.

The concentration of barium acetate solution is

Explanation:

To calculate the molarity of solution, we use the equation:

Moles of barium acetate =    (Conversion factor:   )

Volume of solution = 200 mL

Putting values in above equation, we get:

Hence, the concentration of barium acetate solution is

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms