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Given that 1 inch (in) = 2.54 cm, 33.8 in2 = ________ cm2

In general, electronegativity ____ down a group and ____ from left to right across a period.

What is the approximate measure of the indicated H-C-C bond angle in the following molecule?

What is the mass of NaNO3 (molar mass: 84.99 g/mol) needed to prepare 500.0 mL of 1.30 M NaNO3 solution?

In general, ionization energy ____ down a group and ____ from left to right across a period.

The temperature of a 25.0-g block of metal increases from 25.0°C to 469.4°C after it absorbs 10.0 kJ of heat. What’s the specific heat of the metal?

In the reaction, Fe (s) +   2 HCl (aq)   →   FeCl2 (aq)  +   H2 (g) _________ is the oxidizing agent.

What is the theoretical yield of Fe2O3 (molar mass: 159.7 g/mol) when 60.0 g of Fe (molar mass: 55.85 g/mol) reacts with excess amount of O2? 4 Fe (s)  +  3 O2 (g)  –> 2 Fe2O3 (s)

What is the oxidation number of sulfur (S) atom in the following compound, Na2S2O3?

Which of the following will change the value of an equilibrium constant? A. changing temperature B. adding other substances that do not react with any of the species involved in the equilibrium C. varying the initial concentration of reactants D. varying the initial concentration of products E. changing the volume of the reaction vessel