What is the percent composition of calcium in calcium chloride (CaCl)? Round your answer to the nearest whole percent. Use the periodic table to help you find the necessary molar masses.
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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 )

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?