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Aleonysh [2.5K]
3 years ago
12

Why alkanes undergo substitution reaction?

Chemistry
1 answer:
Margaret [11]3 years ago
4 0

Answer: Alkanes undergo a substitution reaction with halogens in the presence of light. ... This reaction is a substitution reaction because one of the hydrogen atoms from the methane is replaced by a bromine atom

Explanation:

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Give the name and symbol of the prefixes used with SI units to indicate multiplication by the following exact quantites.
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Answer:

A. Kilo , K, multiplication by 1000

B. Centi, c

C. Deci, d

D. Mili, m

E. Mega, M

F. Micro, u

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What is the mass of 2.15 moles of calcium hydroxide, Ca(OH)2?
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159.3 g

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The structural level of a protein least affected by a disruption in hydrogen bonding is the
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An atom of 14 6 c carbon decays by gamma decay which atom is left after the decay
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7 0
3 years ago
Read 2 more answers
A sucrose solution is prepared to a final concentration of 0.250 M . Convert this value into terms of g/L, molality, and mass %.
MArishka [77]

Answer:

A. 85.6 g

= 0.0856 kg.

B. 0.00027 mol/g

= 0.27 mol/kg.

C. 8.39 %

Explanation:

Given:

Molar concentration = 0.25 M

Molar weight of sucrose = 342.296 g/mol

Density of solution = 1.02 g/mL

Mass of water = 934.4 g.

Density in g/l = 1.020 g/ml * 1000ml/1 l

= 1020 g/l

Mass of solution in 1 l of solution = 1020 g

Mass of solution = mass of solvent + mass of solute

Mass of sucrose = 1020 - 934.4

= 85.6 g of sucrose in 1 l of solution.

A.

Density of sucrose = mass/volume

= molar mass/molar concentration

= 342.296 * 0.25

= 85.6 g/l

Number of moles = mass/molar mass

= 85.6/342.296

= 0.25 mol

B.

Molality = number of moles of solute/mass of solvent

= 0.25/934.4

= 0.00027 mol/g

C.

% mass of sucrose = mass of sucrose/total mass of solution * 100

= 85.6/1020 * 100

= 8.39 %

6 0
3 years ago
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