For the reaction NH4Cl (s) →NH3 (g) + HCl (g) at 25°C, ΔH = 176 kJ/moland ΔS = 0.285 kJ / (mol - K).

What is the ΔG, and will this reaction be spontaneous in the forward direction?

169 kJ/mol; no

91 kJ/mol; no

91 kJ/mol; yes

-91 kJ/mol; yes

Which two atoms will form the most polar covalent bond? Electronegativity values for these elements are:O=3.44 C=2.55 N=3.04 H=2.20

A temperature of 37°C is equivalent to a temperature of (1) 98.6 K (3) 310. K (2) 236 K (4) 371 K

Is the water more or less dense as you go deeper?

Show You Know It: Mole Relationships How many moles of alanine, C3H7NO2, are there in 159g of alanine? Alanine's molar mass is 89.1g/mol 022 x 1023 for Avogadro's number Number • Molar Mass Mes

A gas station charges 1.299 per gallon of gas. What would be the price for a liter of gas?

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.