A chemist adds of a barium chloride solution to a flask. Calculate the mass in grams of barium chloride the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

The question is incomplete, here is the complete question:

A chemist adds 50.0 mL of a 0.277 M barium chloride solution to a flask. Calculate the mass in grams of barium chloride the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

The mass of barium chloride is 2.88 grams

Explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

Given mass of barium chloride = ? g

Molar mass of barium chloride = 208 g/mol

Molarity of solution = 0.277 M

Volume of solution = 50.0 mL

Putting values in above equation, we get:

Hence, the mass of barium chloride is 2.88 grams

- 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

m=9

step-by-step explanation: