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TEA [102]
3 years ago
9

What happened as a result of people being able to trade and purchase food from other people?

Chemistry
1 answer:
Rashid [163]3 years ago
7 0

D.There were large food shortages.

As a result of people being able to trade and purchase food from other people.

Explanation:

  • From the following options, The people who were able to trad and purchase food from other people could be because of large food shortages.
  • People started buying from each other to fulfill their basic food necessities.
  • There is also a possibility where people have more stock to be sold.
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What are scientific models used for? Give an example of each of the follwoing types of models: idea, physical, computer
leva [86]

Answer:

Scientific models are used to explain phenomena that can not be experience directly and it is also used for prediction.

Explanation:

An example of idea model is the Eistein equation.  An idea model shows how things interact together to produce a particular result.

An example of physical model is the solar system.

Computer model is used to predict long term events and an example of this is computer simulations.

5 0
3 years ago
A student has two compounds in two separate bottles but with no labels on either one. One is an unbranched alkane, octane, C8H18
Aleks [24]

Answer:

a) both substances are insoluble in water

b) both substances are soluble in ligroin

c) both substances suffer combustion, octane produces more CO₂ than hexene.

d) both substances are less dense than waterl, with hexene having the lowest density.

e) only hexene would react with bromine

f)  only hexene would react with permanganate

Explanation:

a) both substances are non-polar and water is polar

b) both substances are non-polar and lingroin is non-polar

c) C₈H₁₈ + 17.5O₂ → 8CO₂ + 9H₂O

    C₆H₁₂ + 9O₂ → 6CO₂ + 6H₂O

d) water = 997 kg/m³

    ocatne = 703 kg/m³

    hexene = 673 kg/m³

e) bromine test is used to detect unsaturations

f) permanganate test is used to detect unsaturations

7 0
3 years ago
Can someone help me write the complete balanced equation for the decomposition of magnesium chlorate (Mg(ClO3)2).
Tamiku [17]
MgCl2+3O2 is the answer

4 0
2 years ago
Write the chemical formula for the anion present in the aqueous solution of cuso4.
ki77a [65]
SO4 -2, or Sulfate

Hope this helps! :)
6 0
3 years ago
Read 2 more answers
How is coffee, Lemonade, Soda, Vinegar, Orange Juice an acid?
tatuchka [14]

Answer:

Curd, lemon juice, orange juice and vinegar taste sour. These substances taste sour because they contain acids. The chemical nature of such substances is acidic. The word acid comes from the Latin word acere which means sour.

8 0
3 years ago
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