There are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2. Details about formula units can be found below.
<h3>What is a formula unit?</h3>
Formula unit refers to the empirical formula of an ionic compound for use in stoichiometric calculations.
According to this question, there are 111g of CaCl2. The formula units can be calculated by multiplying the number of moles by Avogadro's number.
no of moles in CaCl2 = 111g ÷ 111g/mol = 1mol
Formula units of CaCl2 = 1mol × 6.02 × 10²³ = 6.02 × 10²³ formula units.
Therefore, there are 6.02 × 10²³ formula units of CaCl2 in 111 g CaCl2.
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Increase in suburbanization
Answer:
The answer is Hide From Predators !!
Explanation:
Took the test it's correct :)
Answer:
The answer to this question is 3. Kinetic energy decreases as temperature decreases.
Explanation:
The average Kinetic energy is given by
× × T where
K = The average molecular kinetic energy of the gas (J)
= Boltzmann's constant (1.38× J/K)
T = Temperature of the gas in Kelvin (k)
When the temperature of a given mass of gas drops average kinetic energy of the molecules goes down and the average molecular speed decreases. The lower kinetic energy which is the energy of motion of the molecules indicates lower speed of the molecules.
Note that, the kinetic energy and average speed are related by the following formula
KE = ×m×v²
Where KE = Kinetic energy in Joules (J)
v = the velocity in m/s and
m = the mass of the molecule in Kg
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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