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Alexeev081 [22]
3 years ago
11

What is alchemy??????!

Chemistry
2 answers:
Salsk061 [2.6K]3 years ago
7 0
<span>the medieval forerunner of chemistry, concerned with the transmutation of matter, in particular with attempts to convert base metals into gold or find a universal elixir. </span>
aleksandr82 [10.1K]3 years ago
3 0
Alchemy is a philosophical and protoscientific tradition practiced throughout Europe, Africa and Asia
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Different enzymes that catalyze the same reaction are known as _____.
maw [93]

Answer:

<em><u>Isozymes</u></em>

Explanation:

Isozymes are enzymes that differ in amino acid sequence but catalyze the same chemical reaction. These enzymes usually display different kinetic parameters, or different regulatory properties.

7 0
3 years ago
Write 10,847,100 in Scientific Notation with 4 significant figures.
Lisa [10]

Answer:

The number 10,847,100 in Scientific Notation is 1.0847x10^{7}

Explanation:

Scientific notation is an easy form to write long numbers and it is commonly used in the scientific field. To write a long number in a shorter way it is necessary to 'move' the decimal point to the left the number of positions that are necessary until you get a unit. Then you write the number and multiplied it by 10 raised to the number of positions you moved the decimal point. In this case, it is necessary to move the decimal point 7 positions so, we multiply the number by 10 raised to 7.

5 0
3 years ago
What type of contamination occurs if a paint chip falls into soup
I am Lyosha [343]
Food contamination is classified into three types:  1) Physical 2) Chemical Biological.

Physical contamination occurs if a paint chip falls into soup

It must be noted that, physical<span> contamination get into food through</span><span> poor procedural practices such as</span><span> dirt, hair, nail polish flakes, broken glass, nails, staples, plastic fragments, bones, bits of packaging, etc.</span>

6 0
3 years ago
Anthony needs to make a solution with a concentration of 2.5m. He begins with 2.0 iters and a 8.0M solution. What final volume d
FrozenT [24]

Answer:

The final volume is 6.4 L.

Explanation:

Dilution is reducing the concentration of a chemical and is achieved by adding more solvent to the same amount of solute. In other words, dilution is the procedure that is followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.

In a dilution the amount of solute does not vary, and as only more volume (and mass) of solvent is being added, the concentration of the solute decreases.

In a dilution the expression is used:

Ci*Vi = Cf*Vf

where:

  • Ci: initial concentration
  • Vi: initial volume
  • Cf: final concentration
  • Vf: final volume

In this case:

  • Ci: 8 M
  • Vi: 2 L
  • Cf: 2.5 M
  • Vf: ?

Replacing:

8 M* 2 L= 2.5 M* Vf

Solving:

Vf=\frac{8 M* 2 L}{2.5 M}

Vf=6.4 L

<u><em>The final volume is 6.4 L.</em></u>

7 0
3 years ago
How do I find the concentration of hydronium
Lady_Fox [76]

Answer:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34? On a calculator, calculate 10-8.34, or "inverse" log ( - 8.34).

Explanation:

Hope it helps!

7 0
3 years ago
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