13. What is the percent mass of 6.3 g HCl in 78.5 mL H2O? Assume the density of H2O is 0.998 g/mL.

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

How would you reduce the volume of gas

What element has similar physical and chemical properties as boron.