- How many moles of ions are in a solution of 7.4 moles FeCI3 in 500 mL water?

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Multiply matrices A and B of any sizes legally (no size compatibility requirment). What kind of matrix multiplication am I? Is it true that the oxidation number of an ion is equal to its protons subtracting its electrons? Naphthalene sublimation rate=3*10^-5/min. Volume of room=60m^3. How would I calculate the naphthalene concentration in the air of the room? Total surface of human body 1.2m^2
face temp. 30degree
surrounding 20degree
what is the heat loss from body by radiation? ? How long do the batteries in Beats executives last?