Chemistry Questions & Answers

\( H _ { 3 } C _ { 6 } H _ { 5 } O _ { 2 } + 3 NaOH \rightarrow Na _ { 3 } C _ { 6 } H _ { 5 } O _ { 7 } + 3 H _ { 2 } O \)

\( \left. \begin{array} { l } { H _ { 3 } C _ { 6 } H _ { 5 } O _ { 7 } + 3 NaOH \rightarrow Na _ { 3 } C _ { 6 } H _ { 5 } O _ { 7 } + 3 H _ { 2 } O } \\ { \frac { 0,1 moles NaOH } { 1 L } \times 2 mLL \times \frac { 1 L } { 1000 } = 0,002 moles NaO } \end{array} \right. \)

4. A sample of oxygen is collected over water at \( 25.0^{\circ} \mathrm{C} \). The barometric pressure is 717.0 mmHg . What is the pressure of the oxygen gas in atm? (0.9121 atm)

Postlab Questions 1. a. Write the balanced chemical equation (with state descriptors) for the reaction between sodium carbonate and hydrochloric acid.

It is required to collect 95 mol\% of methanol as a condensate from a process stream containing an equimolar ratio of methanol and toluene. Toluene is collected as a bottoms product. Crude oil is required to be heated to \( 1400^{\circ} \mathrm{C} \) before it is sent to a catalytic reactor to crack the carbon chain bonds of the crude to produce petrochemicals. [1] A volume of air needs to be compressed to 5 bars from atmospheric pressure so that it can be delivered to a chemical process. A unit for the reaction of copper and nitric acid to produce copper nitrate. [1] Dusty air from a factory needs to be cleaned before it is exhausted to the atmosphere by using a cylinderical vessel, where dust particles fall down and are collected in a hopper and clean air escapes at the top of the vessel. Large particles of limestone from a nearby quary needs to have its size reduce to fine powder to produce cement.

Cien libras de gas de una caldera a 1 atm y 1000 F contiene 57 lb de N2, 15 lb de O2, 20 lb CO2, Y 8 lb de CO. Asuma un comportamiento ideal. Organice sus datos y sultados en tabla sacando sus totales. a) Cual es la fracción mol de 02 b) Cuál es la suma de las fracciones mol c) Cual es el volumen ocupado por la mezcla d) Cual es el volumen del componente puro N2 e) Cual es el volumen del componente puro CO2 f) Determine la suma de los volúmenes de os component3es puros g) Cuál es la razón entre volumen de O2 y volumen total h) Es la fracción en volumen igual a la fracción mol i) Cual será la presión si solo el CO2 ocupan a el volumen total j) Cual sería la presión del O2 al volumen total. k) Cuál es la suma de presiones parciales l) Cual es la razón entre presión parcial de O2 Y presión total m) Es la fracción de presión igual a la fracción mol n) Es la fracción de presión igual a la fracción volumen Tome como base 100 lb de gas

Calculate the amount of heat needed to boil 126. g of water \( \left(\mathrm{H}_{2} \mathrm{O}\right) \), beginning from a temperature of \( 35.3^{\circ} \mathrm{C} \). Rou be sure your answer contains a unit symbol.

Study this chemical reaction: \[ 2 \mathrm{Cu}+\mathrm{Cl}_{2} \rightarrow 2 \mathrm{CuCl} \] Then, write balanced half-reactions describing the oxidation and

Part A Identiry \( \mathrm{H}_{2} \mathrm{SO}_{4}(a q) \) as an acid or a base. acid base

The half-life of Palladium-100 is 4 days. After 20 days a samit? of Palladium-100 has been reduced to a mass of 2 mg . What was the initial mass (in mg ) of the sample? What is the mass 4 weeks after the start? Question Help: Video 1 Video 2 Message instructor Submit Question