Questions tagged 'Chemistry'
452 questions
CHEMISTRY HELP PLEASE!!?
Title: Chemistry Help Needed Body: I am studying the decomposition of a metal oxide into its elements, represented by the following reaction: M2O (s) → 2M (s) + 1/2 O2 (g) The standard Gibbs energy c...
Calculate Ka for C5H5NH+?
Calculate the acid dissociation constant (Ka) for the pyridinium ion, C5H5NH+, at 25 degrees Celsius. I believe the only relevant information needed is the Kb value for C5H5N, which is 1.8 x 10^-9. I...
Complete and balance the following metallurgical reactions. Phases are optional.?
I need assistance in completing and balancing the following metallurgical reactions. The reactions are as follows: MoO3(s) + H2(g) → ? Ag2S(s) + O2(g) → ? I am unsure how to approach these reaction...
Feb 03, 2025
Hydrochloric acid ( 75.0 mL, 0.250M ) is added to 225.0mL of 0.050 M barium hydroxide. What is the concentration of excess H or OH-
Hydrochloric acid with a volume of 75.0 mL and a concentration of 0.250 M is added to 225.0 mL of barium hydroxide at a concentration of 0.050 M. What is the concentration of the excess hydrogen ions...
Rank the following organic compounds from most soluble in water to least soluble in water.?
Please rank the following organic compounds in order of their solubility in water, from most soluble to least soluble.
A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/?
A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter with a total heat capacity of 11.66 kJ/°C. The temperature of the calorimeter and its contents increased from 21.36 °C to...
Please, I really need help!! Reaction direction and quotient direction?
I really need help with understanding the direction of a reaction and the reaction quotient! Consider the following reaction: NH4HS(s) ⇌ NH3(g) + H2(g). At a certain temperature, the equilibrium cons...
How many molecules are there in 4.00 L of oxygen gas at 500 C and 50.0 Torr
I would appreciate it if someone could check and correct my work. Here’s the question: How many molecules are present in 4.00 L of oxygen gas at a temperature of 500 °C and a pressure of 50.0 Torr? U...
Feb 01, 2025
Sodium Chloride is least soluble in which of the following liquids?
Which of the following liquids is sodium chloride least soluble in, and why? A. H2O B. CCl4 C. HF D. CH3OH E. CH3COOH
What is a small “turkey baster” used in chemistry called?
What is the name of the small, thin tube used in chemistry that functions like a turkey baster? It has a squeezable bulb on top that allows you to suck up and dispense small amounts of liquid.