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Lera25 [3.4K]
3 years ago
5

An atom can be called a particle, but a molecule is never called a particle.

Chemistry
2 answers:
mr_godi [17]3 years ago
8 0

Answer: um is this a question or are you just telling people

Explanation:

aliina [53]3 years ago
6 0

Answer:

Atoms are composed of particles called protons, electrons and neutrons. ... A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. Protons and neutrons are both composed of other particles called quarks and gluons.

Particles can be atoms, molecules or ions. The term molecule is often used incorrectly to refer to any type of chemical compound. A molecule is a neutral particle made of two or more atoms bonded together. Take care with your own language, especially when referring to compounds formed during chemical reactions.

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____________ is a point source of water pollution; _____________ is a nonpoint source of water pollution.
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Answer:

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Explanation:

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2 years ago
The capability of a substance to be stretched into thin wires without breaking is known as —
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The answer is ductility
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3 years ago
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During an investigation, a student burns magnesium to form magnesium oxide. The starting mass of magnesium is measured as 21.3 g
enot [183]

Answer:

Percentage yield = 85.2%

Explanation:

Given data:

Mass of Mg = 21.3 g

Actual yield of MgO = 30.2 g

Percentage yield = ?

Solution:

Chemical equation:

2Mg + O₂ → 2MgO

Number of moles of Mg = mass/molar mass

Number of moles of Mg = 21.3 g / 24.3 g/mol

Number of moles of Mg = 0.88 mol

Now we will compare the moles of MgO with Mg.

                 Mg           :               MgO

                 2               :               2

                0.88             :             0.88

Mass of MgO:           

Mass of MgO= moles × molar mass

Mass of MgO= 0.88 mol × 40.3g/mol

Mass of MgO =  35.46 g

Actual yield of MgO = 30.2 g

Percentage yield:

Percentage yield = Actual yield/theoretical yield × 100

Percentage yield = 30.2 g/ 35.46 g × 100

Percentage yield = 85.2%

3 0
3 years ago
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it will be shriviled due to the process called osmosis

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A mixture which contains more than one phase is called .
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This is a heterogeneous mixture. 

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3 years ago
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