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sertanlavr [38]
3 years ago
11

Given the following equation: Na2O + H20 - 2 NaOH

Chemistry
1 answer:
Shalnov [3]3 years ago
7 0

Answer:

124g  

Explanation:

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Use bond energies to determine which halogen produces the most exothermic halogenation reaction with ethene. the c−f, c−br, and
Serga [27]
To know the total energy you must know that bond-breaking is endothermic (+) while bondbond-forming is exothermic (-). The bond energy of ethene is 602 kJ/mol. Since we break the ethene, that would be -602 kJ/mol.

For C-F: -602 + 552 = -50 kJ/mol
For C-Br: -602 + 280 = -322 kJ/mol
For C-I: -602 + 209 = -393 kJ/mol

<em>Since the most negative, hence exothermic, answer is C-I, the answer is C-I.</em>
3 0
3 years ago
The reaction between nitrogen dioxide and carbon monoxide is NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g) The rate constan
galina1969 [7]

Answer:

k_2=2.55\ {Ms}^{-1}

Explanation:

Using the expression,

\ln \dfrac{k_{1}}{k_{2}} =-\dfrac{E_{a}}{R} \left (\dfrac{1}{T_1}-\dfrac{1}{T_2} \right )

Where,

k_1\ is\ the\ rate\ constant\ at\ T_1

k_2\ is\ the\ rate\ constant\ at\ T_2

E_a is the activation energy

R is Gas constant having value = 8.314 J / K mol  

k_2=?

k_1=2.57\ {Ms}^{-1}

T_1=701\ K  

T_2=525\ K  

E_a=1.5\times 10^2\ kJ/mol

So,  

\ln \:\frac{2.57}{k_2}\:=-\frac{1.5\times \:10^2}{8.314}\times \left(\frac{1}{701}-\frac{1}{525}\right)\:\:

k_2=\frac{2.57}{e^{\frac{352}{40796.798}}}=2.55\ {Ms}^{-1}

7 0
3 years ago
Which scenario represents an unbalanced force?
ladessa [460]

A . A person Jumping represents an unbalanced force.

<u>Explanation:</u>

If equal amount of force applied on any object from both the directions, then the object will not move and so the force is a balanced force.

If an unequal amount of force on an object from both sides then the object will move in the opposite direction of the maximum force applied, so it is called as an unbalanced force.

  • When the force is unbalanced then its velocity will change, so options C and D are omitted.
  • In Option B the vase is sitting on a table, just kept so there is no action of any unbalanced force.
  • But a person jumping represents an unbalanced force, since the person do not jump with constant velocity and it will vary.
7 0
4 years ago
Which of the following is a nonrenewable resource?
dybincka [34]

C. Natural gas

Hope this helps!

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3 years ago
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What are oil traps?
aliya0001 [1]

In petroleum geology, a trap is a geological structure affecting the reservoir rock and caprock of a petroleum system allowing the accumulation of hydrocarbons in a reservoir. Traps can be of two types: stratigraphic or structural.

7 0
3 years ago
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