Heather just drank 40.0 grams of water (H20). How many moles of water did she just drink? O a. 2.22 moles b. 45 moles O c. 40.0 moles O d. 0.45 moles O e. 720 moles

What assumption is made about the reason for the change in mass after chewing the gum

The half reaction of an oxidation-reduction reaction shows that iron gains electrons. What does this electron gain mean for iron? ОА. It is neutralized. OB. It is oxidized. ОС. It is reduced. OD. It has dissolved. ОЕ. It has precipitated.

Write this numeral in scientific notation. 820.5

A mixture of short branched and unbranched undigested oligosaccharides is known as

What element is represented by the chemical symbol V

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution? moles of solute Use molarity - liters of solution

What are 3 ways to seperate metal particles and salt

Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the test tube was allowed to cool. A green powder was left in the tube.

In which orbital does an electron in a bromine atom experience the greatest effective nuclear charge?

Kool-Aid is made up of sugar (C6H12O6), food coloring, and water. It is an example of a (n) element heterogeneous mixture homogeneous mixture compound