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lora16 [44]
3 years ago
9

The density of gold is 19.32. Give two reasons why this statement is incomplete

Chemistry
2 answers:
makvit [3.9K]3 years ago
6 0

<u>Answer:</u> The units and conditions are not written.

<u>Explanation:</u>

Density is defined as the ratio of mass of a substance to the volume of substance. The equation used to calculate density of a substance follows:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

This property is expressed in g/mL or kg/L

Density depends on temperature and pressure of the system.

As, the temperature of the system increases, the particles move freely which increases the volume of system and leads to the decrease of density.

As, the pressure of the system increase, the particles come closer to one another which decreases the volume of system and leads to the increase of density.

So, for the given value of density, two reasons are:

  1. Units are not given.
  2. Conditions are not mentioned.
DerKrebs [107]3 years ago
3 0
A: there is no unit. b: it doesn't present the temperature and pressure
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A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental
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Answer:

the empirical (lowest raios) is

C2H4Cl    

Explanation:

A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental analysis, it was determined that the compound is composed of 24.27% carbon.

What is the empirical formula of this compound?

the compound has ONLY C, H, and Cl

the % Cl  = 100% - 24.27% -4.03% = 71.7%

in 100 gm, there are 71.7 gm Cl, 24.27 gm C, and 4.03 gm H

the number of moles are Cl=71.7/70.91 =1.01= ~ 1

                                          C = 24.27/12.0 = 2.02 =~ 2

                                           H = 403/1.01 = 3.97 =~   4

so   the empirical (lowest raios) is

C2H4Cl      

                                 

                               

3 0
3 years ago
F a shell can hold a maximum of 32 electrons, what is the value of n? 2 3 4 5
Arte-miy333 [17]

Answer: 4

Explanation:

Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.

Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as m_l. The value of this quantum number ranges from (-l\text{ to }+l). When l = 2, the value of m_l will be -2, -1, 0, +1, +2.

Given : a f subshell, thus l = 3 , Thus the subshells present would be 3, 2, 1, 0 and thus n will have a value of 4.

Also electrons give are 32.

The formula for number of electrons is 2n^2.

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Thus principal quantum no will be n= 4.

8 0
3 years ago
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Answer:

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Explanation:

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