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What is the empirical formula of a compound that is 49.4% K, 20.3% S, and 30.3% O?

What are the spectator ions in the reaction between KOH(s) and HNO3(aq)?

Convert 761 miles to km (1 m = 1.094 yds.; 1 mile = 1760 yds.)

What is the mass percentage of Al in Al2(SO4)3?

Ethene (C2H4), a hydrocarbon, is burned in an excess of oxygen to form products. What is the sum of the coefficients of the balanced chemical equation?

Calculate the number of moles of water molecules in 25.0 g of water, H2O.

An atom of the ion 90Sr2+ has:

Which has the condensed formula C3H6O3?

This is the line structure of a common molecule: What is the condensed formula?

The number 0.000402 expressed in exponential notation is: