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4 years ago

A student has an unknown sample. How can spectroscopy be used to identify the sample?

2 answers:

4 0

Every substance has a unique interaction or response to an electromagnetic radiation. He can use spectroscopy by looking at the response of the unknown sample to an electromagnetic radiation. Spectroscopy is <span>is the study of the interaction between matter and electromagnetic radiation. </span>

DiKsa [7]4 years ago

4 0

the answer is A!!!!!!!

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What determines the ratio of ions of an ionic compound? ( see screenshot for options)

zalisa [80]

What as I don’t see a as

8 0

3 years ago

The second-order rate constant for the dimerization of a protein (P) P + P → P2 is 6.2 × 10−3/M · s at 25°C. Part 1 out of 2 If

siniylev [52]

Answer:

$r=1.59\times 10^{-10}\ M/s$

Explanation:

According to the law of mass action:-

The rate of the reaction is directly proportional to the active concentration of the reactant which each are raised to the experimentally determined coefficients which are known as orders. The rate is determined by the slowest step in the reaction mechanics.

Order of in the mass action law is the coefficient which is raised to the active concentration of the reactants. It is experimentally determined and can be zero, positive negative or fractional.

The order of the whole reaction is the sum of the order of each reactant which is raised to its power in the rate law.

From the reaction given that:-

$P+P\rightarrown P_2$

The expression for the rate is:-

$r=k[P]^2$

Given that;- k= $6.2\times 10^{-3}$ /Ms

[P] = $1.6\times 10^{-4}$ M

Thus,

$r=6.2\times \:10^{-3}\times \:\left(1.6\times \:\:10^{-4}\right)^2\ M/s=1.59\times 10^{-10}\ M/s$

8 0

3 years ago

ClO(4)− Express your answer as a chemical formula.

Nimfa-mama [501]

ClO(4)− is regarded as perchlorate ion and are produced commercially in most situations as salts via industries and in the laboratory.

<h3>What is Perchlorate ion?</h3>

This ion is referred to as a monovalent inorganic anion and is obtained by deprotonation of perchloric acid. It is composed of chlorine and oxygen atoms in the ratio 1 to 4 respectively.

This has 32 valence electrons available in the Lewis structure and is used in the commercial production of solid rocket fuel.This ion has a molar mass of 99.451 g mol−1 and is used in different processes such as an oxidizer and to control static electricity during the process of food preservation in industries.

Therefore ClO₄− is also regarded as perchlorate ion and is the most appropriate choice.

Read more about Perchlorate ion here brainly.com/question/16895150

#SPJ1

3 0

2 years ago

What does quantum mechanics deal with?

Virty [35]

Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics.

5 0

3 years ago

The compound AlP (aluminum phosphide) is a compound semiconductor having mixed ionic and covalent bonding. Calculate the fractio

netineya [11]

Answer:

0.086

Explanation:

The formula for calculating the fraction of a covalent bond can be expressed as:

= exp (-0.25ΔE²)

$= exp[-0.25(E_{Al}-E_{p})^2]---(1)$

from the equation above;

$E_{Al}$ = the electronegativity of aluminum

$E_P$ = electronegativity of phosphorus

Using the data from periodic table figures;

$E_{Al}$ = 1.5

$E_P$ = 2.1

∴

fraction of the covalent = exp[-0.25(1.5 - 2.1)²]

fraction of the covalent = exp(-0.09)

fraction of the covalent = 0.914

Now, the fraction of ionic bond will be = 1 - the fraction of covalent bond

= 1 - 0.914

∴

the fraction of bond that is ionic = 0.086

6 0

3 years ago