Explain what is the percent mass of calcium

Assignment Help Chemistry

Reference no: EM13673079

Explain what is the percent mass of calcium in a 1.27-g calcium supplement if 0.44 grams of calcium carbonate was precipitated?

Reference no: EM13673079

Questions Cloud

Explain what is the longest wavelength of light in nanometer : Suppose the ionization enthalpy of sodium metal is quite low at 495 kJ/mol. Explain what is the longest wavelength of light in nanometers, nm that will produce the photoelectric effect with sodium i.e. to eject electrons from sodium.

Compute the number of photons needed of microwave energy : A microwave oven operating at 1.22 x 108 nm is utilized to heat 150 ml of water roughly the volume a tea cup from 20 C to 100 C. Compute the number of photons needed if 92% of microwave energy is converted to the thermal energy of water.

Compute the kinetic energy of a neutron with wavelength : Neutrons like electrons as well as photons are particle-waves whose diffraction patterns can be utilized to determine the structures of molecules. Compute the kinetic energy (in J) of a neutron with wavelength 69.7 pm.

Explain how many moles will dissolve of solution : 1) CaF2 at room temperature has a solubility of 0.00160 g of CaF2 per 100g of water. How many moles ofCaF2 are there? 2) If presuming a solution of CaF2 is saturated and has a density of 1.00g/ml; explain how many moles will dissolve in 1.00L of so..

Explain what is the percent mass of calcium : Explain what is the percent mass of calcium in a 1.27-g calcium supplement if 0.44 grams of calcium carbonate was precipitated

Explain what volume of solution the student should transfer : A student prepared a solution of sodium carbonate by adding 2.111 g of the solid to a 250.0 ml volumetric flask and adding water to the mark. Some of this solution was transferred to a burette. Explain what volume of solution the student should tr..

Explain what will the equilibrium concentrations of co : At 900 C, the Kc = .83. Presume 400 mol of COCl2 are admitted into a2.00 L container at 900 C. Explain what will the equilibrium concentrations of CO, CL2 and COCl2? Use the quadratic for this one.

Define the reaction shift for the equilibrium to be reached : The preliminary concentrations of four species involved in equilibrium are- [Cl2] = 1.40 M, [HCL] = 0.100 M, [O2] = .300 M and [H2O]= .500 M. Is the reaction at equilibrium? Unless, in what direction must the reaction shift for the equilibrium to ..

Explain what is the value of keq : All the reagents in the reaction below are in aqueous form. The preliminary concentration of A is 4.5 x 10^-4 M. The initial concentration of B is 5.3 x 10^-3 M. At equilibrium, the concentration of A is 1.2 x 10-4 M. Explain what is the value of ..

User Account

All Pages