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bija089 [108]
3 years ago
7

TRUE FALSE? The MOLE is a unit in Chemistry that serves as a bridge between the ATOMIC and MACROSCOPIC worlds?​

Chemistry
2 answers:
Vanyuwa [196]3 years ago
7 0

Answer:

True

Explanation:

A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

BlackZzzverrR [31]3 years ago
7 0
Trueeeeeeeee!!!!!!!!!!!!
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What is rust? a compound, molecule, solution, mixture, or element?
rjkz [21]
I believe the answer would be compound.

Hope this helps :-)
5 0
3 years ago
When doing an extraction, a student mixes 50 mL of 0.40 M benzoic acid (MW = 122 g/mole) with 30 mL of dichlormethane. After sep
Margarita [4]

Answer:

A. 2.44g

B. Kd = 3.2

Explanation:

Concentration of benzoic acid = 50mL = 0.05L

Molecular weight = 122 g/mol

Moles of benzoic acid before the extraction = mass/molecular weight of Benzoic acid

= molar concentration * volume

Moles of benzoic acid before the extraction = 0.05 * 0.4

= 0.02moles of benzoic acid before extraction.

Mass of benzoic acid = 0.02 * 122

= 2.44 g

Partition coefficient, Kd is defined as the ratio of concentration of a substance in an organic medium to the concentration of the substance in the aqueous medium.

Since 1.22g of Benzoic acid was in Dicholoroethane, therefore (2.44 - 1.22)g of benzoic acid was in water.

Mass concentration of benzoic acid in water = mass of benzoic in water/volume of water

= 1.22/0.05

= 24.4 g/L

Mass concentration of benzoic acid in Dicholoroethane = mass of benzoic in Dicholoroethane/volume of Dicholoroethane

= 1.22/0.03

= 40.67g/L

Kd = [concentration]organic/[concentration]aqueous

= 40.66/24.4

= 1.67

7 0
4 years ago
Give me lil reasoning so I know your not lying for points
ycow [4]

Answer:

0.87 ATM

Explanation:

4 0
3 years ago
How are mitosis and meiosis similar​
il63 [147K]

Explanation:

Mitosis and Meiosis are forms of cell division. They use the same steps for cell division which are Prophase, Metaphase, Anaphase and Telophase.

Mitosis produces 2 diploid cells while Meiosis produces 4 haploid cells.

Meiosis stages -

  • Interphase
  • Prophase I
  • Metaphase I
  • Anaphase I
  • Telophase I
  • Prophase II
  • Metaphase II
  • Anaphase II
  • Telophase II
  • Cytokineses

Mitosis stages

  • Prophase
  • Prometaphase
  • Metaphase
  • Telophase

<em><u>Hope this helps!</u></em>

<em><u>Please mark brainliest!</u></em>

7 0
4 years ago
Help Please I'll mark Brainiest!
lyudmila [28]
The shape of the organism is a huge factor, as it could fact for a different creature and/or organism every time. For example, a antelope may have a different form or structure of let’s say a spider, as this is the significant factor of ones shape, the first observation.

Secondly, the colors. As different organism come in different areas of reflections of light, it can easily be identified with this certain color and the way that the light reflects on it. This is another form of visual appearance, and important factor in identification.

Lastly, the pattern. As located on the back, the spikes/thread-looking things sticking out plays a huge factor in finding the organism name and/or identifying it. Every organism has a different pattern, humans being a huge one, all different

Observational studies of organisms is significant to our lives, and it’s greatly helped progress our sciences and society.
8 0
3 years ago
Read 2 more answers
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