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anzhelika [568]
3 years ago
12

Which characteristic applies to all mixtures, including solutions?

Chemistry
1 answer:
lyudmila [28]3 years ago
6 0

Answer:

c)Mixtures are composed of two or more substances.

Explanation:

From the given choices, it is true that mixtures are composed of two or more substances.

  • Mixtures have indefinite composition i.e. they consist of two or more compounds in any proportion by mass.
  • Constituents retain their identity.
  • The constituents reacts differently to changed conditions.
  • They can easily be separated into constituents.
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How many molecules does 88 grams CO2 contain? A) 1.2 X 1024 B) 1.8 X 1024 C) 3.0 X 1023 D) 6.0 X 1023
mylen [45]

Hey there!:

Molar mass CO2 = 44.01 g/mol

44.01 g CO2 ------------------- 6.02*10²² molecules CO2

88 g CO2 ------------------------ y

y = 88 * ( 6.02*10²² ) / 44.01

y = 5.29*10²⁵ / 44.01

y = 1.2 * 10²⁴ molecules of CO2

Answer A


Hope that helps!

7 0
3 years ago
What are the pros and cons of modern medicine? (I'm rewarding 25 points)
Sergio [31]
Pros: The rate at which modern medicine is advancing is astonishing. You can sit on your couch and watch TV and see commercials for new medications at an alarming pace — and these new medications have reduced our death rates for stroke, heart disease, and cancer. In fact, due to modern medicine, the death rate from heart disease has decreased by 60% since 1970! The death rate for HIV/AIDS has dropped more than 75% since 1995, when its was at its peak.

Cons: However, critics of modern medicine are quick to point out that there is a pill for everything . Yes we are quick to create more drugs, and yes, we are living longer due to said drugs but are we living better?
Medicine has evolved, and we now have surgeons who are able to perform surgeries robotically. But critics point out that medicine has evolved to the point that we are treating disease instead of preventing it .
8 0
3 years ago
When aqueous solutions of Li3PO4 and MgSO4 are mixed, Mg3(PO4)2 is a precipitate
Lesechka [4]

Answer:

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Explanation:

Balance the reaction of Li3PO4 + MgSO4 = Li2SO4 + Mg3(PO4)2 using this chemical equation balancer!

8 0
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Answer:

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When a substance changes from a liquid to a solid, it has reached its _____ point
Gala2k [10]

Answer:

The temperature at which a substance changes from the liq- uid state to the solid state is called the freezing point. The freez- ing point of the liquid state of a substance is the same temperature as the melting point of the solid state. For example, solid water melts at 0°C and liquid water freezes at 0°C.

Explanation:

6 0
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