Answer:
c
Explanation:
the rest are chemical properties
The molar concentration of NaOH can find out from the molarity of the titrant HCl. The molarity of NaOH is found to be 0.038 molar.
What is molarity?
Molarity is the number of moles of solute per volume of solution in liters. Here, the HCl has the density of 0.7292 g/l and volume 20L . Its mass is calculated as:
mass = density × volume
= 0.7292× 20L
= 14.58.
The molar mass of HCl is 37.5. Thus its number of moles in the solution is 14.58/37.5 = 0.388.
At the end point the number of moles of NaOH and HCl will be equal thus, where the volume of the NaOH solution is 10 ml. Now the molarity can be find out as follows:
molarity = number of moles /volume
= 0.388/10 = 0.038 M.
Hence, the molarity of HCl is 0.038 M.
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It is insoluble. Because one of the substances are polar and the other is non-polar.
NH4Br is the substance that will give an aqueous solution of ph<7.
<h3>Give a brief summary of NH4Br.</h3>
The ammonium salt of hydrobromic acid is called ammonium bromide, or NH4Br. The chemical has a salty flavor and crystallizes as colorless prisms that are easily soluble in water. It sublimes when heated. It progressively takes on a yellow hue when exposed to air due to the oxidation of minute amounts of bromide (Br) to bromine (Br2)
<h3>Write down the uses of NH4Br.</h3>
Ammonium bromide is used in
- medicinal preparations
- lithography
- process engraving
- fireproofing of wood
- photography in films
- plates and papers
- and photography in films
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Answer:
C. Thermal energy
Explanation:
Thermal energy is the sum of the kinetic and potential energy of all the particles in an object.