Related Questions

Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite.
On heating calcium acetate and calcium formate, the product formed is which of the following?
A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure–drop is 2011Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure–drop as: α (ft/lb) = α (Δp)0.26, where α = 2.90×1010 Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.
Which receptors open up during the calcium-induced calcium release?
Quantitatively, the most important response to calcium deficiency is enhanced intestinal calcium absorption.
Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?
For the irreversible reaction, Ca+ 2C = CaC2, ΔH°298 = -60000 J.mole-1. If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be
The purpose of injection of calcium into liquid steel is to
P. replace Al2O3 inclusions by CaO inclusions
Q. modify Al2O3 inclusions into calcium aluminate inclusions
R. reduce sulfur content of steel
S. reduce nitrogen content of steel
For the irreversible reaction, Ca + C = CaC2, ΔH°298 = - 60,000 J.mol-1. If a system, initially containing 2 moles of calcium, 3 moles of carbon and one mole of calcium carbide, is allowed to react to completion, the heat evolved, at 298 K will be . . . . . . . . J.
Calcium hydroxide has a neutralizing value (calcium carbonate equivalent) of . . . . . . . .