Questions tagged 'Chemistry'
452 questions
chemistry orbital question?
How many of the following statements are true? The helium (He) atom has one electron in the 1s orbital and one electron in the 2s orbital. The helium atom has two electrons with parallel spins in...
Calculate the molality of the solution. (assume a density of 1.08 g/ml for the solution.)an aqueous nacl solution is made using 140
Calculate the molality of the solution using 140 g of NaCl diluted to a total volume of 1.20 L of solution. Assume the density of the solution is 1.08 g/mL.
Does increasing the size of an axial substituent always result in higher relative strain energies for the axial conformation
Does the size of an axial substituent directly correlate with an increase in relative strain energies for the axial conformation?
How many moles of oxygen are produced if 11.0 mol of al are produced?
How many moles of oxygen are produced when 11.0 moles of aluminum are reacted?
Elements in group 7A in the periodic table are the halogens; elements in group 6A are called the chalcogens.?
What is the most common oxidation state of the chalcogens compared to that of the halogens? Please express your answer as a signed integer. I initially thought the oxidation states were -2 for chalcog...
At stp, both diamond and graphite are solids composed of carbon atoms. these solids have(1) the same crystal structure and same properties
At standard temperature and pressure (STP), both diamond and graphite are solids composed of carbon atoms. These solids exhibit (1) the same crystal structure and the same properties, (2) the same cry...
Consider a buffer composed of the weak acid HA and its conjugate base A−Which pair of concentrations results in the most effective buffer?
Consider a buffer composed of the weak acid HA and its conjugate base A−. Which pair of concentrations results in the most effective buffer? A. 0.60 M HA; 0.60 M A− B. 0.88 M HA; 0.18 M A− C. 0.18 M H...
Dec 02, 2024
A 6.55 g sample of aniline (C₆H₅NH₂), molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of
A 6.55 g sample of aniline (C₆H₅NH₂) with a molar mass of 93.13 g/mol was combusted in a bomb calorimeter that has a heat capacity of 14.25 kJ/°C. The initial temperature of the calorimeter was 32.9°C...
Dec 01, 2024
C. Can a stable compound be made from these two atoms?
Can a stable compound be formed from these two atoms? Please explain your reasoning, including any relevant factors that influence the stability of the compound.
Dec 01, 2024
Complete and balance each of the following precipitation equations?
How do you complete and balance the following precipitation reactions? a) NaOH(aq) + FeBr3(aq) → ? b) BaCl2(aq) + AgNO3(aq) → ? c) Na2CO3(aq) + CoCl2(aq) → ?