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2 years ago

Part A In order for a reaction to proceed spontaneously from left to right as written ________.

Chemistry

1 answer:

Strike441 [17]2 years ago

3 0

Answer:

d. The overall free-energy change must be negative

Explanation:

For a reaction to be spontaneous, The overall free-energy change must be negative for the reaction.

ΔG of a reaction can be calculated by subtracting the free energy of reactants from the free energy of products.

$\Delta G = G_{products}-G_{reactants}$

Therefore, if a chemical reaction undergoes from a higher value of free energy (Reactants) to a lower value of free energy (Products), then ΔG will be negative in magnitude and the chemical reaction will be spontaneous.

Thus, ATP involved, Phosphate group transferred or a common intermediate must be formed or not, if free energy change is negative, the reaction will be spontaneous.

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Na+H2O=NaOH+H2 Balancing

elena55 [62]

Answer:

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Explanation:

The balanced equation is 2Na+2H2O———-> 2NaOH +H2.

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2 years ago

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2 years ago

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The daily production of carbon dioxide from an 780.0 mw coal-fired power plant is estimated to be 3.3480 x 104 tons (not metric)

valkas [14]

The production of $CO_{2}$ is $3.3480\times 10^{4} tons/day$ . Converting mass into kg,

1 ton=907.185 kg, thus,

$3.3480\times 10^{4} tons=3.037\times 10^{7} kg$

Thus, production of $CO_{2}$ will be $3.037\times 10^{7} kg/ day$ .

The specific volume of $CO_{2}$ is $0.0120 m^{3}/kg$ .

Volume of $CO_{2}$ produced per day can be calculated as:

$V=Specific volume\times mass$

Putting the values,

$V=0.0120 m^{3}/kg\times 3.037\times 10^{7} kg=364440 m^{3}/day$

Thus, volume of $CO_{2}$ produced per year will be:

$V=\frac{365 days}{1 year}(364440 m^{3}/day)=1.33\times 10^{8}m^{3}/year$

Thus, in 4 year volume of $CO_{2}$ produced will be:

$V=1.33\times 10^{8}m^{3}/year\times 4 years=5.32\times 10^{8}m^{3}$

8 0

2 years ago

Ascorbic acid, or vitamin C (C6H8O6, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant propert

nydimaria [60]

Answer : 50.69 mg of ascorbic acid does not meet the daily requirement.

Solution : Given,

Molar mass of Ascorbic acid = 176 g/mole

Moles of Ascorbic acid = $2.88\times 10^{-4}moles$

Formula used :

$Moles=\frac{Mass}{\text{ Molar mass}}$

or, $\text{ Mass of ascorbic acid}=\text{ Moles of ascorbic acid}\times \text{ Molar mass of ascorbic acid}$

Now put all the given values in this formula, we get the mass of ascorbic acid.

$\text{ Mass of ascorbic acid}=(2.88\times 10^{-4}moles)\times (176g/mole)=0.050688g=50.69mg$

Conversion : $(1g=1000mg)$

As per question, a healthy adult’s daily requirement of vitamin C is 70-90 mg. But calculate mass of vitamin C is 50.69 mg. So, 50.69 mg of ascorbic acid does not meet the daily requirement.

5 0

2 years ago

Um átomo X possui 8 neutrons e seu número atômico e igual a 8. Sabendo que esse atomo é isótopos de Y, que possui número de mass

hodyreva [135]

Question in English : 

An atom X has 8 neutrons and its atomic number equals 8. Knowing that this atom is isotopes of Y, which has mass number 18, answer: What is the number of neutrons in atom Y?

Answer :

Isotopes are defined as the atoms which have same number of protons but different number of neutrons of same element. Since the proton number is same, the atomic number also same. Hence the atomic number of Y is 8.

Mass number = atomic number + neutron number

18 = 8 + neutron number

Neutron number = 10

Hence, there are 10 neutrons in Y.

3 0

2 years ago