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lorasvet [3.4K]
3 years ago
10

True or False: The dots are placed as

Chemistry
2 answers:
Natali5045456 [20]3 years ago
7 0

Answer: True

Explanation:

rusak2 [61]3 years ago
5 0

Answer:

Chemical Bond (False)

Explanation:

A mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together

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How does pollution affect air resources?
tatiyna

Answer: it gets inside the air and then it infects the air's resourses

Explanation:

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For a particular experiment, Nadia must measure the following quantities:
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Graduated cylinder
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Various pieces of safety equipment are used in the lab to provide protection against injury. What piece of lab safety equipment
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Various pieces of safety equipment are used in the lab to provide protection against injury. However, the lab safety equipment which is least likely to be used when proper eye goggles are being worn is the eye wash station. If this question has the same choices as the ones posted before, the answer is letter C. eye wash station.
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Iron reacts slowly with oxygen and water to form a compound commonly called rust (Fe₂O₃?4H₂O). For 45.2 kg of rust, calculate
Mashcka [7]

Rust (Fe2O3. 4H2O) is formed when iron interacts slowly with oxygen and water. Mass of Fe in grams is 2.18 x 10⁴ g.

<h3>What is the explanation?</h3>

There are 2 moles of Fe atoms in 1 mole of Fe2O3-4H2O. The number of moles of Fe atoms in 45.2 kg rust is shown below.

Moles of Fe = 195.01 mol Fe₂O₃.4H₂O ( \frac{2 mol Fe }{1 mol Fe₂O₃.4H₂O} )

Moles of Fe = 390.02 mol Fe

Multiply the calculated number of moles of iron, Fe, by its molar mass which is 55.85 \frac{g}{mol}

Mass of Fe = 390.02 mol Fe ( \frac{55.85 g Fe}{mol Fe} )

Mass of Fe = 2.18 x 10⁴ g Fe

Avogadro's number (6.022 x 1023) of molecules (or formula units) make up one mole of a substance (ionic compound). The mass of 1 mole of a chemical is indicated by its molar mass. It provides you with the amount of grams per mole of a substance, to put it another way.

To learn more about moles visit:

brainly.com/question/26416088

#SPJ4

4 0
2 years ago
ILL GIVE BRAILNEST!!!!! PLZ HELP ME FAST
NemiM [27]
Multiple states of matter - mixture
Same state of matter - pure
Separated physically- mixture
Consistent properties - pure
Can’t be separated- pure
Can’t be a single element - mixture
3 0
3 years ago
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