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Maru [420]
3 years ago
12

I need help with the bottom one plz and thxs

Chemistry
1 answer:
Juliette [100K]3 years ago
8 0
Dissolving rate because the temperature is the independent variable and the dissolving rate is what you're testing for.
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How many atoms are there in 144g of sucrose, C12H22O11 or sugar molecules?
kati45 [8]

Answer:

2.53×10²³ atoms

Explanation:

To solve this, convert grams to moles and moles to atoms.

To convert grams to moles, use the molar mass of C₁₂H₂₂O₁₁ (342.296 g/mol).  Divide the mass by the molar mass to get moles.  Moles = 0.4207

To convert moles to atoms, use Avogadro's number (6.022×10²³ atoms/mol).  Multiply moles by Avogadro's number to get atoms.  Atoms = 2.53×10²³

8 0
3 years ago
Alchemy is the process of trying to turn non-gold metals into gold. It was practiced hundreds of years ago by scientists who bel
Ber [7]

Answer:

Alchemy is a practice of making gold from other metals.

Explanation:

Alchemy is a method which is practiced by the ancient scientists of Europe, Africa and Asia trying to produced gold from other metals. This method was failed to produced gold from metals and all scientist suggested that metals can not be converted into gold. Greeks were the people who presented the theory of alchemy in the first few centuries of CE.

5 0
3 years ago
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Who is allowed to go into a crime scene after its released?
Gala2k [10]

Answer:

detectives, police officers and occasionaly lawyers/attorneys.

Explanation:

Non essential officers, judges, district attorney investigators, federal agents, victums, witnesses and politics are not permited to enter crime scenes unless they can provide information and history about the event.

6 0
3 years ago
Why are experimental investigations the best type of scientific investigation to demonstrate cause-and-effect relationships?
Fudgin [204]

Answer:

are the best type of scientific investigation to demonstrate cause-and-effect relationships because they allow the investigator to actively manipulate variables and control conditions.

7 0
3 years ago
Please help me please ​
sweet-ann [11.9K]

Explanation:

1 sugar solution =Distillation

2 Iron powder and sand=magnetic separation

3 petrol and diesel= Fractional distillation

4 Camphor and glass powder = Sublimation

7 0
3 years ago
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