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3 years ago

How do you fill in the chart and all of 5?

Chemistry

1 answer:

Advocard [28]3 years ago

6 0

You add them and then subtract them

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What is the Octet rule?

trasher [3.6K]

8 electrons makes a full shell in an atom

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4 years ago

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When the enthalpy of the reaction is provided, it is always in the context of moles; i.e., ΔHrxn=+252.8 kJ when two moles of CH3

Morgarella [4.7K]

Answer: The balanced chemical equation is written below.

Explanation:

There are 2 types of chemical reaction classified on the basis of heat change:

Endothermic reactions : They are the reactions in which energy of products is more than the energy of the reactants. For these reactions, energy is absorbed by the system. The $\Delta H$ comes out to be positive and is written on the reactants side.
Exothermic reactions: They are the reactions in which energy of reactants is more than the energy of the products. For these reactions, energy is released by the system. The $\Delta H$ comes out to be negative and is written on the product side.

We are given:

Moles of methanol = 2 moles

Moles of methane = 2 moles

Moles of oxygen gas = 1 mole

$\Delta H_{rxn}=+252.8kJ$

The chemical equation follows:

$2CH_3OH+252.8kJ\rightarrow 2CH_4+O_2$

Hence, the balanced chemical equation is written above.

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3 years ago

Which is the next logical step in balancing the given equation?

Afina-wow [57]

To balance the give n equation, we apply elemtal balance and count each elements per side. There are 2 nitrogens in the left side so there should be 2 moles of NO2. Since there are already 4 moles of O in the right side, there should be 2 moles of O2. Hence answer is a. Place the coefficient 2 in front of oxygen and nitrogen dioxide.

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3 years ago

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Ammonia is a gas for which reliable analytical methods are available to determine its concentration in other gases. To measure f

IgorLugansk [536]

amount of ammonia injected:

72.3 kg/min x 12 min = 867.6 kg

ammonia concentration = 0.382%

$\tt 0.382\%=\dfrac{mass~amonia}{mass~ammonia+mass~natural~gas}\times 100\%\\\\0.00382=\dfrac{867.6}{867.6+mass~natural~gas}\\\\mass~natural~gas=226,252.88~kg/12min=1131264.4~kg/h$

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2 years ago

6. What does the symbol AH stand for?

Vesnalui [34]

the heat of reaction for a chemical reaction

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4 years ago