3 years ago

In double displacement reactions, the metals in each compound are switching to form new compounds.

1 answer:

8 0

Answer:

Yes it is because of the fact that they are leaving a negatively charged ion and that ion needs to bind with any free metal and note only a metal that is high than the other in the reactivity series can displace the other.

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Hen solid kbr is dissoved in water, the solution gets colder. this is an example of a(n) ________ reaction.

Sonja [21]

Endothermic reactions. These are reactionsthat take in energy from the surroundings. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to get colder

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3 years ago

Protein x has an absorptivity of 0.4 ml·mg-1 ·cm-1 at 280 nm. What is the absorbance at 280 nm of a 2.0 mg ·ml-1 solution of pro

Evgen [1.6K]

Absorbance measures the ability of the substance to absorb light at a specific wavelength.

Absorbance is also equal to the product of molar absorptivity, path length and molar concentration.

The mathematical expression is given as:

$A= \epsilon l c$ (1)