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weqwewe [10]
3 years ago
13

an __ is pure substance that cant be broken down into simpler substance by chemical or physical means

Chemistry
2 answers:
melisa1 [442]3 years ago
5 0
<span>An ELEMENT is pure substance that cant be broken down into simpler substance by chemical or physical means</span>
GaryK [48]3 years ago
3 0
<span>An element is pure substance that cant be broken down into simpler substance by chemical or physical means</span>
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Based on the table below, which is the most stable isotope? Explain the answer. ASAPP
Marta_Voda [28]

Answer:

plutonium

Explanation:

Since the mass of plutonium is higher than any other one on the chart this means it can withstand more pressure such as being used in architecture

3 0
3 years ago
What state of matter is at 35 Celsius
Otrada [13]
Different forms of matter have different melting/boiling points. For example, at 100 degrees Celsius, H2O (water) will turn from lliquid to gas. But NaOH (table salt) doesn't even go from solid to liquid until some 800 degrees Celsius. So, in order to figure out which state matter is at 35 Celsius, you'd have to be more specific about what kind of matter...
7 0
3 years ago
What is the atomicity of carbon monoxide
Scilla [17]

I believe the answer is two

7 0
4 years ago
What ketones would be formed from the acid-catalyzed hydration of 3-heptyne?
blagie [28]

The answer would be heptan-3-one and heptan-4-one.

The acid-catalyzed hydration of a balanced alkyne gives a ketone.

R-C≡C-R + H₂O → R-CH₂-CO-R

If the alkyne is uneven, you get a combination of two ketones, since the O can increase to either of the alkyne C atoms.

R-C≡C-R' + H₂O → R-CH₂-CO-R' + R-CO-CH₂-R'

So, for CH₃CH₂CH₂-C≡C-CH₂CH₃, the products are

CH₃CH₂CH₂-CH₂-CO-CH₂CH₃ and CH₃CH₂CH₂-CO-CH₂-CH₂CH₃

Their terms are heptan-3-one and heptan-4-one,

6 0
4 years ago
A flask contains oxygen, carbon dioxide,
Grace [21]

Answer:

The total pressure is 25.7 atm

Explanation:

The total pressure is the sum of the pressures of the three gases in the flask.

total pressure=(11.4+5.6+8.7) atm

                        =25.7 atm

8 0
3 years ago
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