Of the two solids, crystalline SiO 2 and amorphous SiO 2 ,the denser solid has to be identified. Concept Introduction: Crystalline solid is defined as the solid consists of atoms, ions or molecules arranged in a regular, definite and three dimensional patterns in a very long range order. They have perfect geometry and structure. Amorphous solid is defined as the solid consists of atoms or molecules arranged in irregular, random pattern. They don’t possess perfect geometry and structure. Density of a substance refers to the extent of compactness in the substance. It is mass per unit volume and represented as – density = mass volume Greater the compactness of a substance less will be the volume it occupies and more will be the density.
Of the two solids, crystalline SiO 2 and amorphous SiO 2 ,the denser solid has to be identified. Concept Introduction: Crystalline solid is defined as the solid consists of atoms, ions or molecules arranged in a regular, definite and three dimensional patterns in a very long range order. They have perfect geometry and structure. Amorphous solid is defined as the solid consists of atoms or molecules arranged in irregular, random pattern. They don’t possess perfect geometry and structure. Density of a substance refers to the extent of compactness in the substance. It is mass per unit volume and represented as – density = mass volume Greater the compactness of a substance less will be the volume it occupies and more will be the density.
Solution Summary: The author explains the difference between crystalline and amorphous solids.
Of the two solids, crystalline
SiO2 and amorphous
SiO2,the denser solid has to be identified.
Concept Introduction:
Crystalline solid is defined as the solid consists of atoms, ions or molecules arranged in a regular, definite and three dimensional patterns in a very long range order. They have perfect geometry and structure.
Amorphous solid is defined as the solid consists of atoms or molecules arranged in irregular, random pattern. They don’t possess perfect geometry and structure.
Density of a substance refers to the extent of compactness in the substance. It is mass per unit volume and represented as –
density = massvolume
Greater the compactness of a substance less will be the volume it occupies and more will be the density.
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Question 59 of 70
The volume of
1
unit of plasma is 200.0 mL
If the recommended dosage
for adult patients is 10.0 mL per kg of body mass, how many units are needed for
a patient with a body mass of 80.0
kg ?
80.0
kg
10.0
DAL
1
units
X
X
4.00
units
1
1
Jeg
200.0
DAL
L
1 units
X
200.0 mL
= 4.00 units
ADD FACTOR
*( )
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ANSWER
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D
200.0
2.00
1.60 × 10³
80.0
4.00
0.0400
0.250
10.0
8.00
&
mL
mL/kg
kg
units/mL
L
unit
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Identify the starting material in the following reaction. Click the "draw structure" button to launch the
drawing utility.
draw structure ...
[1] 0 3
C10H18
[2] CH3SCH3
H
In an equilibrium mixture of the formation of ammonia from nitrogen and hydrogen, it is found that
PNH3 = 0.147 atm, PN2 = 1.41 atm and Pн2 = 6.00 atm. Evaluate Kp and Kc at 500 °C.
2 NH3 (g) N2 (g) + 3 H₂ (g)
K₂ = (PN2)(PH2)³ = (1.41) (6.00)³ = 1.41 x 104