Questions tagged 'Chemistry'
452 questions
Select all of the true statements regarding chemical equilibrium. Select one or more: The rates of the forward and reverse reactions
Select all the true statements about chemical equilibrium. You may select one or more of the following options: The rates of the forward and reverse reactions are equal. The concentrations of reactan...
Determine whether or not Hg2Br2 will be more soluble in acidic solution than in pure water.
Will Hg2Br2 be more soluble in an acidic solution compared to pure water? Please provide an explanation for your answer.
Carminic acid, a naturally occurring red pigment extracted from the cochineal insect, contains only carbon, hy?
Carminic acid, a naturally occurring red pigment extracted from the cochineal insect, is composed of carbon, hydrogen, and oxygen. It was commonly used as a dye in the first half of the nineteenth cen...
Hat kind of intermolecular forces act between a chloroacetylene c2hcl molecule and a dichlorine monoxide molecule?
What types of intermolecular forces exist between a chloroacetylene (C2HCl) molecule and a dichlorine monoxide (Cl2O) molecule?
How many electrons are contained in the 3p subshell in the ground state of atomic xenon?
How many electrons are contained in the 3p subshell in the ground state of atomic xenon? The electron configuration of xenon is [Xe]: 4d10 5s2 5p6. I initially thought the answer would be 18, but tha...
Standard enthalpy of formation?
Given the following reactions and their standard enthalpy changes: H2 (g) + F2 (g) → 2HF (g) ΔH°rxn = -546.6 kJ 2H2 (g) + O2 (g) → 2H2O (l) ΔH°rxn = -571.6 kJ Calculate the standard enthalpy c...
How many oxygen atoms are in 1.30g of quartz?
How many oxygen atoms are present in 1.30 grams of quartz?
Please tell me what I did wrong on these. (dS for formulas)?
Calculate ΔS in units of J/K for the following scenarios: Formation of 1 mole of HI(g) from its elements in their standard states: Work: ( \text{H(g)} + \text{I(g)} \rightarrow \text{HI(g)} )...
Air is 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by moles. What is the density of air at 22 °C and 760…?
Air consists of 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by mole fraction. What is the density of air at a temperature of 22 °C and a pressure of 760 torr? Please assume ideal gas behavior for t...
Arrange these elements in order of decreasing atomic size : sulfur , chlorine , aluminum , and sodium.
Please arrange the following elements in order of decreasing atomic size: sodium, aluminum, sulfur, and chlorine.