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A compound contains 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. Determine the empirical formula of the compound.

Give the chemical formula for calcium phosphate.

A hypothetical element, Js, has three naturally occurring isotopes. The atomic mass and relative abundance of each isotope are: 35% 191 Js, 20% 185 Js,And 45% 192 Js. What atomic mass should be reported for this element?

A gas sample at 75 degrees C and 2.0 atm pressure occupies a volume of 2.5L. What volume will it occupy at STP?

Convert 200 degrees C to degrees F.

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  • Category:- Chemistry
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