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3 years ago

14

According to the video, what qualities do Chemists need? Check all that apply. curiosity ability to focus on details ability to

lift heavy objects negotiation skills friendly attitude painstaking follow-through

1 answer:

tekilochka [14]3 years ago

5 0

Curiosity, ability to focus on detail, and painstaking follow-throw (i think, not really sure on the last one)

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Radiation from structures that have a very high temperature is collected by

SVEN [57.7K]

I would radiation a robotics arm but for a heated surphace is Shiny surfaces are poor absorbers and emitters (but they are good reflectors of infrared radiation).

7 0

3 years ago

Which of the minerals/mineral groups provides the red coloring used by artists for thousands of years

Vsevolod [243]

Given what we know, we can confirm that mercury sulfide is the mineral that provides the red coloring used by artists for thousands of years.

<h3>What is mercury sulfide?</h3>

This is a compound that can be quite toxic. It has come to be known as Cinnabar. This mineral has a distinct property in which it will provide red coloring, which drew the attention of ancient artists that used it for art and decorations.

Therefore, we can confirm that the mineral known as Cinnabar, which is mercury sulfide, is the mineral that provides the red coloring used by artists for thousands of years.

To learn more about art visit:

brainly.com/question/2802088?referrer=searchResults

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2 years ago

PLEASE HELP I DONT HAVE MUCH TIME I WILL MARK AS BRAINLIST!!!!

Damm [24]

Answer:

i dont know but it is probily 4 and 6

5 0

2 years ago

Help please ill give brainliest (mind the "Because" i was just writing something

Citrus2011 [14]

Answer:

never start off with because

Explanation:

thermal energy is added to the cube for it to melt since it wasnt in nothing cold even thought is would only stay ice n the freezer not the refrigrator

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3 years ago

a solution of ethanol differs from a solution of propanoic acid in that the solution of propanoic acid...

exis [7]

Answer:

A solution of Proponic acid is <u>more acidic </u>than ethanol

The Boiling point of propanoic acid is more than ethanol

Explanation:

1.The boiling point of propanoic acid is more than the boiling point of ethanol because of H- bonding.

The electronegative O atom having the lone pair attracts the H of other molecule. Hence the molecules of ethanol show strong<u><em> intermolecular H-Bonding.</em></u>

CH3CH2OH-------OHCH2CH3

But in Propanoic acid CH3CH2COOH

This has more extensive H- bonding Because here H-bonding occur from two Oxygen atoms . One is C=O oxygen and other is -OH oxygen.

2.Propanoic acid is more acidic than ethanol because it has acidic Hydrogen . The anion formed after the removal of Hydrogen from Propanoic acid is stabilized by resonance but this does not occur in alcohol. look at the resonance of COO- of carboxylic acids;

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3 years ago