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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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marissa [1.9K]

Answer:

The question has some part missing which I have added in the attachment.

Explanation:

The reactions given occur under certain reagents, which we are told to pick for each of the reaction synthesis. Conventionally, halogens have the ability to undergo addition reactions with hydrocarbons by breaking down the double or triple bond in them to a single bond, this usually occur by electron donation and electron acceptor.

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3 years ago
Give the following for SO2 and BrF5:
frosja888 [35]

Answer:

The given molecules are SO2 and BrF5.

Explanation:

Consider the molecule SO2:

The central atom is S.

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Hybridization on the central atom is

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Consider the molecule BrF5:

The central atom is Br.

The number of domains on the central atom is six.

Domain geometry is octahedral.

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6 0
3 years ago
The correct lewis structure for COH2 contains how many covalent bonds?
VARVARA [1.3K]

Answer:

Four covalent bonds.

Explanation:

Hello,

In this case, given the attached picture in which you can find the Lewis dot structure for metanal (formaldehyde) we can see two C-H bonds and two C-O bonds via a double bond, thus, we can compute the type of each bond given the electronegativities of hydrogen, carbon and oxygen which are 2.1, 2.5 and 3.5 respectively:

C-H=2.5-2.1=0.4\\C-O=3.5-2.5=1.0

Thus, since both electronegativity difference are less 1.7 we infer that all of them are covalent, therefore, it has four covalent bonds, two C-H bonds and a double C-O bond.

Best regards-

8 0
3 years ago
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