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Drupady [299]
3 years ago
15

HELP ASAP PLZ!!! WILL GIVE BRAINLIEST

Chemistry
1 answer:
Illusion [34]3 years ago
3 0

Answer:

A diamond is a pure substance because it is made of one element.

Explanation:

From the crystalline structure model of the diamond, we can see that we only have just one element represented by the green balls connected in a cross linked fashion to one another. Therefore, one can rightly conclude that this is a pure substance made up of one element.

In a pure substance, all parts are homogeneous and composition is definite.

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Basic substances have a gritty texture.
crimeas [40]
<h3>1.<u> Answer;</u></h3>

False

<h3><u>Explanation;</u></h3>

Bases have some of the following properties;

  • They have a bitter taste
  • They have a slimy, or soapy feel on fingers
  • Most bases react with acids and precipitate salts.
  • Strong bases may react violently with acids.
  • Bases turn red litmus paper blue

<h3>2. <u>Answer;</u></h3>

An acid

<h3><u>Explanation;</u></h3>
  • When acids are dissolved in water, the concentration of the acid decreases and it becomes dilute.
  • It dissociates in water to give H+ ions or hydrogen ions.
  • All acidic solutions contain more hydrogen ions than hydroxide ions, therefore when added to water it increases the concentration of H+ ions in water, as water is a neutral substance whose concentration of H+ ions is equal to OH-.
5 0
3 years ago
Do blood cells have a rigid of cells walls
KatRina [158]

<em>Yes</em> the blood cells have a rigid of cell walls as their cell walls are cell membrane.

4 0
3 years ago
Which statement best describes the structure of a lipid molecule?
Sergeeva-Olga [200]

A phospholipid has a charged head and an uncharged tail.

5 0
2 years ago
What is the mass , in grams of 0.0287 moles of sucrose
VladimirAG [237]

Hey there!

Sucrose is C₁₂H₂₂O₁₁.

Find molar mass of sucrose:

C: 12 x 12.01 = 144.12

H: 22 x 1.008 = 22.176

O: 16 x 11 = 176

--------------------------------

                  342.296 grams

That is the mass of one mole of sucrose.

We have 0.0287.

342.296 x 0.0287 = 9.82

The mass of 0.0287 moles of sucrose is 9.82 grams.

Hope this helps!

4 0
3 years ago
How many protons does manganese-55 have
Oksanka [162]

Answer:

25

Explanation:

5 0
3 years ago
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