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Questions in chemistry

📝 Answered - Which element is more electronegative, sulfur or nitrogen?

📝 Answered - This reaction is an explosive reaction of a strong acid combining with a strong base. \[ \text{H}_2\text{SO}_4 + 2\text{NaOH} \rightarrow 2\text{H}_2\text{O} + \text{Na}_2\text{SO}_4 \] Which compounds are the reactants and which are the products? A. Reactants: \(\text{H}_2\text{SO}_4 + 2\text{NaOH}\) Products: \(2\text{H}_2\text{O} + \text{Na}_2\text{SO}_4\) B. Reactants: \(2\text{NaOH} + \text{Na}_2\text{SO}_4\) Products: \(\text{H}_2\text{SO}_4 + 2\text{H}_2\text{O}\) C. Reactants: \(2\text{H}_2\text{O} + \text{Na}_2\text{SO}_4\) Products: \(\text{H}_2\text{SO}_4 + 2\text{NaOH}\) D. Reactants: \(\text{H}_2\text{SO}_4 + 2\text{H}_2\text{O}\) Products: \(2\text{NaOH} + \text{Na}_2\text{SO}_4\)

📝 Answered - List four physical properties of each of the following: a) A piece of paper b) 500g of butter c) A glass of milk d) A candle

📝 Answered - Three isotopes of oxygen are oxygen-16, oxygen-17, and oxygen-18. Write the symbol for each, including the atomic number and mass number.

📝 Answered - What is the maximum volume of a 0.788 M CaCl2 solution that can be prepared using 85.3 g of CaCl2?

📝 Answered - Which pair of compounds will form a solution? A. Benzene ([tex]C_6H_6[/tex]) and hexane ([tex]C_6H_{14}[/tex]) B. [tex]Na_2SO_4[/tex] and benzene ([tex]C_6H_6[/tex]) C. [tex]NaCl[/tex] and hexane ([tex]C_6H_{14}[/tex]) D. [tex]H_2O[/tex] and [tex]CCl_4[/tex] E. More than one of the combinations above will form solutions.

📝 Answered - The _______ of a wave is a measure of the amount of energy it carries.

📝 Answered - Although Plato and Aristotle disagreed with Democritus, what did his theory suggest was true about all matter?

📝 Answered - Will bromine react with sodium, and why?

📝 Answered - What could you do to change the volume of a gas?