Answer:
C: Double Replacement
Explanation:
According to the molar concentration, volume in liters of 2 M KCl solution is 16.76 L.
Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.
Volume required is obtained by molarity formula as, 2×74.55/2500=1/V=0.05964
∴V=1/0.05964=16.67 L.
Thus, 16.67 L of 2 M KCl solution contains 2.5 kg of KCl.
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B. atomic number.
C. molecular mass.
D. molecular size.
Answer:
solute, solvent, solution
solute dissolve in a solvent and the end product is called solution
Answer: b. Biomass
Humans are dependent upon biomass for their food supply. Biomass is the organic matter that is produced by the living organisms during their life cycle. The biomass is transferred from one organism to other organism in a food chain when one organism is consumed by other organism in order to obtain food and energy. Human beings are hetrotrophic organisms, which means they are dependent upon plants and animals for their food and energy requirement. The food is a form of biomass, which is being transferred among the living beings in the food chain.
The answer is biomass