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algol [13]
3 years ago
12

Is cutting your nails a physical or chemical change

Chemistry
2 answers:
Temka [501]3 years ago
4 0
Cutting of Nails is a Physical Change since no new substance is formed.
Don't confuse it with Reversible and Irreversible Changes
mrs_skeptik [129]3 years ago
4 0

Answer: It is a physical change.

Explanation: Because physical changes are when something goes from one physical state to another.

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Combustion vapor-air mixtures are flammable over a limited range of concentrations. The minimum volume % of vapor that gives a c
DochEvi [55]
Combustion equation of n-hexane:

2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O

a)
Assuming we have 100 moles of air,
Oxygen = 20.9 moles
n-hexane required = 20.9/19 x 2
= 2.2 moles

LFL = Half of stoichometric amount = 2.2 / 2 = 1.1
LFL n-hexane = 1.1% 

b)
1.1 volume percent required for LFL

1.1% x 1
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6 0
3 years ago
Read 2 more answers
Convert .5km to inches
myrzilka [38]

Answer:

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4 0
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Lithium chloride forms three hydrates. They are LiCl.H2O, LiCl.2H2O and LiCl.3H2O.
Stels [109]

Answer:

The answer is LiCl.2H2O

Explanation:

Li=7

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LiCl.H2O

7+35.5+16+2

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%comp=60.5/78.5×100

22.9

LiCl.2H20

7+35.5+2(2+16)

42.5+36

78.5

%comp=36/78.5×100

45.9

LiCl.3H20

7+35.5+3(2+16)

42.5+54

96.5

54/96.5×100

56.0

7 0
3 years ago
Please help me! Please explain!
Ksju [112]

Answer: Total number of Protons PLUS Neutrons

Explanation:

Hopes that helps

8 0
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How much energy is needed when 1.27 moles of sulfur reacts with excess
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