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Margaret [11]
3 years ago
9

What is the most basic unit of matter​

Chemistry
2 answers:
kicyunya [14]3 years ago
7 0

Answer:

Because there are a lot of atoms in the substances. ... The nucleus is in the centre of the atom.the electrons are around the nucleus in the electron clouds. If atoms are made of smaller parts such as electrons,why are atoms considered the basic unit of matter?

kaheart [24]3 years ago
6 0
An atom is the basic unit of matter.
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A 2.950×10−2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by dissolving a sample of C3H8O3 in w
11111nata11111 [884]

Answer:

The molality of the glycerol solution is 2.960×10^-2 mol/kg

Explanation:

Number of moles of glycerol = Molarity × volume of solution = 2.950×10^-2 M × 1 L = 2.950×10^-2 moles

Mass of water = density × volume = 0.9982 g/mL × 998.7 mL = 996.90 g = 996.90/1000 = 0.9969 kg

Molality = number of moles of glycerol/mass of water in kg = 2.950×10^-2/0.9969 = 2.960×10^-2 mol/kg

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3 years ago
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cluponka [151]

Answer:

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4 0
2 years ago
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Complete the following single replacement reaction. If they don’t react, just write “NR”
Kipish [7]

Here we have to complete the given single replacement reactions.

The replacement reactions are-

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2) Cu (s) + FeCl₂ (aq) → NA

3) K (s) + NiBr₂ (aq) → NA

4) Ni (s) + KBr (aq) → NiBr₂ (aq) + K (s)

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The replacement reactions can be explained in light of the redox potential.

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We know the half cell reactions in which the standard reduction potentials are positive are allowed.

1) The reaction is possible as Cu²⁺/Cu and Fe/Fe²⁺ standard reduction potentials are positive.

2) The reaction is not possible as Cu/Cu²⁺ and Fe²⁺/Fe standard reduction potentials are negative.

3) The reaction is not possible as Ni²⁺/Ni standard reduction potential is negative.

4) The reaction is possible as Ni/Ni²⁺ standard reduction potential is positive.

5) The reaction is possible as Zn/Zn²⁺ standard reduction potential is positive.

6) The reaction is possible as Zn²⁺/Zn standard reduction potential is negative.

4 0
2 years ago
How many moles of oxygen are required to produce 37.15 g CO2?
denpristay [2]
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8 0
3 years ago
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8 0
3 years ago
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