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Home Question Bank Chemistry Archive 2024 November 13

Chemistry Questions from Nov 13,2024

Browse the Chemistry Q&A Archive for Nov 13,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Calculate the pH at \( 25^{\circ} \mathrm{C} \) of a 0.52 M solution of anilinium chloride \( \left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3} \mathrm{Cl}\right) \). Note that aniline \( \left(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}\right) \) is a weak base with a \( p K_{b} \) of 4.87 . Round your answer to 1 decimal place. Question 1 Which of the following is the correct Lewis Dot Structure for \( \mathrm{SCl}_{4} \) ? .. (1) Se inicia con una sin. de 100 Molar y se realizan 3 diluciones seriadas cada una con un f.o. 1/10. Cuäl sera la [Ifinal? How do you determine the correct coefficients to balance a chemical equation? \[ \text { Reply I Like I Mark as Unread } \] What initial volume of a \( 15 \%(\mathrm{~m} / \mathrm{v}) \) mannose solution is needed to prepare 125 mL of a \( 3.0 \% \) \( (\mathrm{~m} / \mathrm{v}) \) mannose solution? (c) Metals have a metallic bond. (1) Describe metallic bonding in sodium metal. 1. Diez litros de hidrogeno a 1 atmósfera de presión están contenidos en un cilindro que tiene un pistón móvil. El pistón se mueve hasta que la misma masa de gas ocupa 2 litros a la misma temperatura, encuentre la presión en el cilindro, exprésela er mmHg . In \( \mathrm{Cr}_{2} \mathrm{O}_{7}{ }^{2-} \), the oxidation state of Cr is \( \square \) and \( \mathrm{O}_{\text {is }} \square \) 3 Ajustar (balancear) las ecuaciones químicas siguientes: a) \( \mathrm{Cr}+\mathrm{H}_{2} \mathrm{~S} \rightarrow \mathrm{Cr}_{2} \mathrm{~S}_{3}+\mathrm{H}_{2} \) b) \( \mathrm{CH}_{4}+\mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \) c) \( \mathrm{Ni}(\mathrm{OH})_{3}+\mathrm{H}_{2} \mathrm{MnO}_{4} \rightarrow \mathrm{Ni}_{2}\left(\mathrm{MnO}_{4}\right)_{3}+\mathrm{H}_{2} \mathrm{O} \) d) \( \mathrm{C}_{3} \mathrm{H}_{8}+\mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \) e) \( \mathrm{Pb}(\mathrm{OH})_{4}+\mathrm{HCl} \rightarrow \mathrm{PbCl}_{4}+\mathrm{H}_{2} \mathrm{O} \) f) \( \mathrm{CsOH}+\mathrm{H}_{2} \mathrm{Se} \rightarrow \mathrm{Cs}_{2} \mathrm{Se}+\mathrm{H}_{2} \mathrm{O} \) \( H _ { 2 } SO _ { 4 } + Cu \rightarrow CuSO _ { 4 } + H _ { 2 } \)
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