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djyliett [7]
3 years ago
14

Ingrid drew a diagram to compare two ways in which biodiversity can be protected.

Chemistry
2 answers:
kotegsom [21]3 years ago
7 0

Answer:

B. is often done in nature preserves

Explanation:

edge 2021

Sholpan [36]3 years ago
7 0

Answer:

The answer is often done in nature preserves

Explanation:

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If a drop of blood is 0.05 mL, how many drops of blood are in a blood collection tube that holds 2 mL ?
soldi70 [24.7K]
Just divide the two (2 / 0.05) and you will get your answer; there are 40 drops of bloodin the collection tube.
7 0
3 years ago
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Calculate e°cell for a silver-aluminum cell in which the cell reaction is al(s) + 3ag+(aq) → al3+(aq) + 3ag(s) –2.46 v 0.86 v –0
tekilochka [14]
When E° cell is an electrochemical cell which comprises of two half cells.
 
So,

when we have the balanced equation of this half cell :

Al3+(aq) + 3e- → Al(s)   and E°1 = -1.66 V 

and we have  also this balanced equation of this half cell :

Ag+(aq)  + e- → Ag(s)  and E°2 = 0.8 V 

so, we can get E° in Al(s) + 3Ag (aq) → Al3+(aq) + 3Ag(s)

when E° = E°2 - E°1

∴E° =0.8 - (-1.66)

      = 2.46 V

∴ the correct answer is 2.46 V




6 0
3 years ago
7. A square chunk of plastic has a length of 5 cm, width of 5 cm and height of 5 cm. It has a mass of 200 g. What is its density
BaLLatris [955]

Answer:

d=1.6\ g/cm^3

Explanation:

Given that,

The dimension of a square chunk of plastic is 5 cm × 5 cm × 5 cm

Mass, m = 200 g

We need to find its density

Density = mass/volume

It will form a cube. It volume = side³

So,

d=\dfrac{200\ g}{5^3\ cm^3}\\\\d=1.6\ g/cm^3

Hence density is 1.6\ g/cm^3

5 0
3 years ago
What is the unit of measurement for mass?
Licemer1 [7]
Grams. It is a smaller unit. 
4 0
3 years ago
Identify the intermolecular forces present in each of these substances ch4
djverab [1.8K]
There are four type of intermolecular forces: ionic, dipole-dipole, hydrogen bonds and London disperssion forces.

CH4 have  no ions, so there are  not ionic forces.

CH4 is a symetrical molecule, so there cannot be a net dipole in the molecule, so there is not dipole-dipole interaction.

Hydrogen bonding is only possbile when H is bonded to N, O or F, beacuse they are the atoms that considerable higher electgronegativy than hydrogen.

So, the only intermolecular force present in CH4 molecules is London disperssion forces, which is a force present in any molecule and is the weakiest one. That explains the low melting and boiling points of CH4. 
7 0
3 years ago
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