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3 years ago

What does the "R-" represent?

Chemistry

2 answers:

erica [24]3 years ago

5 0

I think the answer is the first one: "hydrocarbon chain that supports the functional group"

BARSIC [14]3 years ago

3 0

The "R-" represents the hydrocarbon chain that supports the functional group.

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Alchen [17]

Balanced:
1. Na2O + H2O ---> 2NaOH
2. K2O + H2O ---> 2KOH
3. MgO + H2O ---> Mg(OH)2
4. CaO + H2O ---> Ca(OH)2
5. SO2 + H2O ⇄ H2SO3
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All except by 2 were balanced.

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2 years ago

Part A

ArbitrLikvidat [17]

Answer:

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Explanation:

because Javier is moving which is causing for the temperature to change.

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2 years ago

Read 2 more answers

Examine the statement.

Oksana_A [137]

It is true because you can see that the ice cream is physically (melting) changing due to heat.

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2 years ago

It takes 839./kJmol to break a carbon-carbon triple bond. Calculate the maximum wavelength of light for which a carbon-carbon tr

tresset_1 [31]

Answer:

The maximum wavelength of light for which a carbon-carbon triple bond could be broken by absorbing a single photon is 143 nm.

Explanation:

It takes 839 kJ/mol to break a carbon-carbon triple bond.

Energy required to break 1 mole of carbon-carbon triple bond = E = 839 kJ

E = 839 kJ/mol = 839,000 J/mol

Energy required to break 1 carbon-carbon triple bond = E'

$E'=\frac{ 839,000 J/mol}{N_A}=\frac{839,000 J}{6.022\times 10^{23} mol^{-1}}=1.393\times 10^{-18} J$

The energy require to single carbon-carbon triple bond will corresponds to wavelength which is required to break the bond.

$E'=\frac{hc}{\lambda }$ (Using planks equation)

$\lambda =\frac{6.626\times 10^{-34} Js\times 3\times 10^8 m/s}{1.393\times 10^{-18} J}$

$\lambda =1.427\times 10^{-7} m =142.7 nm = 143 nm$

$(1 m = 10^9 nm)$

The maximum wavelength of light for which a carbon-carbon triple bond could be broken by absorbing a single photon is 143 nm.

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3 years ago

PLEASE HELP

zepelin [54]

The answer is b 592 L

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2 years ago