6) Which country is located south of New Mexico<br> and Arizona?

When reactants and products are being formed at an equal rate in a chemical reaction, the ____. a. reaction is endergonic b. fre

attashe74 [19]

<h2>The answer is option b "free energy is zero"</h2>

Explanation

The reaction that has negative free energy are called exergonic reactions that means the reactants have more free energy than the product formed.
The reaction that has positive free energy are called endergonic reactions that means the final state or the products formed have more free energy than the initial state or the reactants.
The reaction that has zero free energy occurs when the free energy of both reactants and the products are same hence the rate of formation of products and reactants are equal.
Therefore, when reactants and products are being formed at an equal rate the free energy is zero.

3 0

3 years ago

Balance the equation and show the calculation of the number of moles and grams of CO2 formed from 11.9 grams of O2. Show your an

n200080 [17]

Answer:

0.2349 moles, 10.3356 g

Explanation:

The given reaction is :

$C_6H_{14}+O_2\rightarrow CO_2 + H_2O$

The balanced reaction by equating the same number of each atom both side is :

$2C_6H_{14}+19O_2\rightarrow 12CO_2 + 14H_2O$

Given that :

Amount of oxygen gas = 11.9 g

Molar mass of oxygen gas = 32 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus, moles are:

$moles= \frac{11.9\ g}{32\ g/mol}$

$moles= 0.3719\ mol$

From the reaction,

19 moles of oxygen gas on reaction forms 12 moles of carbon dioxide

Also,

1 mole of oxygen gas on reaction forms 12/19 moles of carbon dioxide

So,

0.3719 moles of zinc on reaction forms $\frac {12}{19}\times 0.3719$ mole of carbon dioxide

<u>Moles of carbon dioxide formed = 0.2349 moles</u>

Mass of carbon dioxide = moles×Molar mass

Molar mass of carbon dioxide = 44 g/mol

<u>Mass of carbon dioxide formed = 0.2349 ×44 g = 10.3356 g</u>

4 0

2 years ago

For an experiment, you need 0.10 moles of NaCl for a chemical reaction. how much NaCl must you weigh out?

jolli1 [7]

Mole =mass ÷ Mr
∴mass = mole×Mr =0.10 × (23+35.5) = 5.85
the answer is D...

The Mr is obtained from the periodic table

5 0

2 years ago

Four atoms have the numbers of protons and neutrons given below.

Makovka662 [10]

Answer:

W and X

Explanation:

isotopes : are masses of atoms with the same number of proton and electron but different neutron .

W and X have the same number of protons and different number of neutrons.

3 0

2 years ago

The density of an equal-mass water 1 ethanol mixture is 0.913 g/cc at 20°C. If the density of water is 0.998 g/cm3 and ethanol i

zhannawk [14.2K]

Answer:

Since water and ethanol have the same mass, there is an excess of positive volume at a temperature of 20°C

Explanation:

The component 1 refers to water and the component 2 refers to ethanol. The molar volume is

$V_{ethanol} =\frac{m_{ethanol} }{p_{ethanol} } =\frac{46.06}{0.789} =58.37cm^{3} /mol\\V_{water} =\frac{m_{water} }{p_{water} } =\frac{18}{0.998} =18.03cm^{3} /mol$

The excess volume is

$V_{E} =\frac{x_{1}m_{1}+x_{2}m_{2} }{p_{m} } -x_{1}V_{1} -x_{2} V_{2}$

Where xn are the mole fraction of water and ethanol, pm is the density of the mixture.

$V_{E} =\frac{(0.5*18)+(0.5*46.06)}{0.913} -(0.5*18.03)-(0.5*58.37)=55.3cm^{3}$

of the results, since water and ethanol have the same mass, there is an excess of positive volume at a temperature of 20°C

5 0

2 years ago

6) Which country is located south of New Mexico and Arizona?