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vesna_86 [32]
3 years ago
9

Water is believed to be one of the best fire extinguishers then why it is so that fire in oil spills over ocean/sea is difficult

to douse? Choose the most appropriate explanation.
a. Water has no effect on the Ignition temperature of oil
b. Oil is less dense than water and thus continues to undergo combustion
c. Density of oil and water has no bearing on the nature of fire and hence on the
extinguisher
d. All above statements are correct explanation for the given statement
Chemistry
1 answer:
Eddi Din [679]3 years ago
6 0

Answer:

D

Explanation:

Trust me

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Answer is c , because it's convection currents
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3 years ago
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Calculate the mass of atoms of carbon and 3 molecules of hydrogen​
PSYCHO15rus [73]

The mass of atoms of carbon and 3 molecules of hydrogen​ : 18 g/mol

<h3>Further explanation </h3>

An atomic mass unit ( amu or "u") is a relative atomic mass of 1/12 the mass of an atom of carbon-12.  

The molar mass(molecular mass-formula mass-molecular weight(MW)) of a compound is the sum of the relative atomic mass (Ar) of the constituent elements of the compound

Can be formulated :  

M AxBy = (x.Ar A + y. Ar B)  

The mass of atom of Carbon(C)⇒Ar = 12 g/mol

The mass of 1 molecule of Hydrogen - H₂(MW) : 2 g/mol

The mass of 3 molecules of Hydrogen : 3 x 2 = 6 g/mol

So the mass of atoms of carbon and 3 molecules of hydrogen​ :

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3 0
3 years ago
The stock concentration of NaOH is 0.5M. 0.5M = 0.500mol/1.0L.
valentinak56 [21]

Answer:a) 0.1 mole. b) 4g. c) 2% d)  196 mL

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mw NaOH = 40g/mol —> 4g in 0.1 mole

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density NaOH = 1g/mL so if 4g in 200 mL,  4mL , 196 mL water

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Which is one of the ecosystems found in intertidal zones?
Aleksandr-060686 [28]

Answer:

estuaries

Explanation:

7 0
4 years ago
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A solution was prepared by mixing 0.5000 m hno2 with 0.380 m no2-. ka = 4.58 x 10-4. calculate the ph of the solution. show work
adell [148]

pH of buffer can be calculated as:

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As ka = 4.58 x 10-4

Concentration of [Salt] that is NO2(-1)=0.380M

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So, pH= -log(4.58*10^-4)+log((0.380)/0.500))

=3.21

So pH of solution will be 3.21

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3 years ago
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