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MA_775_DIABLO [31]
3 years ago
13

identify each material as a compound or a mixture. Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed rat

io.
Chemistry
2 answers:
vitfil [10]3 years ago
7 0
Answer: caffeine is a compound.

Explanation:

1) As stated c<span>affeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

2) The definition of compound is a pure substance formed by chemical bonding of two or more fifferent elements. That means a defined ratio of the elements in the compound, which conferes uniform and equal properties to every part of the compound.

Some examples of compounds are salt (NaCl), water (H2O), vinegard (CH3 COOH).

A mixture combines several elements or compounds, not bonded by chemical bonds but mixed in ratios which may vary.
</span>
Elodia [21]3 years ago
5 0

Answer: it’s a compound

Explanation:

I just did it on edge

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lord [1]

Answer:

the

first one

Explanation:

5 0
3 years ago
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What volume of so2 is produced at 325 k and 1.35 atm when 15.0 grams of hcl reacts with excess k2so3?
vova2212 [387]
The volume of SO2 produced at 325k   is calculated as  below

calculate  the moles of SO2 produced  which  is calculated as follows

write the  reacting equation
K2SO3 +2 HCl = 2KCl +H2O+ SO2

find the   moles  of  HCl  used
=mass/molar mass = 15g/ 36.5 g/mol =0.411 moles

by  use of mole ratio between  HCl to  SO2  which is  2:1 the moles of SO2 is therefore = 0.411 /2 =0.206  moles  of SO2

use the idea  gas  equation  to calculate the volume SO2
that is V=nRT/P  
where  n=0.206  moles
          R(gas constant) = 0.082 L.atm/ mol.k
         T=325 K
          P=1.35 atm

V=(0.206 moles x  0.082 L.atm/mol.k x325 k)/1.35 atm = 4.07 L of SO2

3 0
3 years ago
Isomers are molecules that share the same formula and have:
mamaluj [8]

Answer:

A

Explanation:

Isomerism is a phenomena whereby two or more organic compounds have the same molecular formula but different structural arrangements.

This means the organic compounds may belong to different organic family but the main idea is that they have different structural and spatial arrangements but the same molecular formula. This means they have the same number of each atoms

6 0
3 years ago
The change of phase from a vapor to a liquid is called _____. evaporation condensation distillation vaporization
anastassius [24]
Its condensation

the vapour has a lot of kinetic energy but if it cools down it loses that energy and condenses into a liquid 

hope that helps 
5 0
3 years ago
Read 2 more answers
What are some of the unique properties of water?
Zepler [3.9K]

Answer:

Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density

Explanation:

4 0
3 years ago
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