a 6.00 L tank at 15.4 C is filled with 8.71 g of carbon dioxide gas and 7.71 g of sulfur hexafluoride gas. Calculate the mole fraction of each gas g

Answer:

c

Explanation:

The number of mole present in the aluminum foil, given that the foil has a thickness of 1.0 mm is 0.7 mole

We'll begin by obtaining the mass of the aluminum foil. Details below:

Density = mass / volume

Cross multiply

Mass = Density × Volume

Mass of aluminum = 2.702 × 7

Mass of aluminum = 18.914 g

Finally, we shall determine the number of mole present. Details below:

Mole = mass / molar mass

Number of mole of aluminum = 18.914 / 27

Number of mole of aluminum = 0.7 mole

Thus, the number of mole is 0.7 mole

Learn more about mole:

https://brainly.com/question/13314627

#SPJ1

Answer:

Explanation:

0.76 V

The voltmeter shows that the standard cell potential of a galvanic cell consisting of a SHE and a Zn/Zn2+ couple is E°cell = 0.76 V.

Answer:

59.46 g

Explanation:

To answer this question, the molecular weight of ammonium sulfate must be computed.  To accomplish this, the weights of the individual elements must be noted.
N=14.01\(\frac{g}{mol}\)

H=1.01\(\frac{g}{mol}\)

S=32.07\(\frac{g}{mol}\)

O=16.00\(\frac{g}{mol}\)

To compute the molecular weight:

\(2[14.01\frac{g}{mol}+4(1.01\frac{g}{mol})]+32.07\frac{g}{mol}+4(16.00\frac{g}{mol})=132.14\frac{g}{mol}\)

To calculate the mass:

\(0.45 mol(\frac{132.14g}{1mol})=59.463g\)

Answer:

sexual

Explanation:

During asexual reproduction, an organism splits into two separate organisms making them look the same.

An organism that was produced from sexual reproduction can have a number of combinations from both parent. For example if your mm had green eyes and your dad had brown eyes, you could either have brown, green, or hazel eyes. Or you could be a rare person that has one brown eye and one green eye... but like I said, that's rare in a person

Moles of Lithium phosphate : 0.495

Given

6 Li + Zn₃(PO₄)₂ ------- > 2 Li₃PO₄ + 3 Zn

Required

Moles of Lithium phosphate

Solution

moles of Zinc(Ar=65,38 g/mol) :

= mass : Ar

= 48.6 : 65.38

= 0.743

From equation, mol ratio of Zn :  Li₃PO₄ = 3 : 2, so mol  Li₃PO₄ :

= 2/3 x mol Zn

= 2/3 x 0.743

= 0.495

The standard enthalpy change for reaction (3) is 117.1 kJ.

The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.

To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.

First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):

C2H4(g)C2H6(g) ΔH° = -52.3 kJ

Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):

2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

Now, we add the two modified equations together:

C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):

C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ

Learn more about standard enthalpy here :-

https://brainly.com/question/28303513

#SPJ11

Sodium salt might not be prepared by double decomposition because the method is used in preparing insoluble salts.

Double decomposition method serves as the method that is used in preparing compounds which entails reaction between two soluble compounds and after reaction soluble and insoluble products are produced.

Therefore, since most of the sodium salt are soluble salt , Double decomposition cannot be used to prepare them.

Learn more about Double decompositionat: https://brainly.com/question/27883280

#SPJ6

Answer:

\(\boxed {\boxed {\sf 0.0018 \ mol \ H_2 O }}\)

Explanation:

First, we need to find the molecular mass of water (H₂O).

H₂O has:

Use the Periodic Table to find the mass of hydrogen and oxygen. Then, multiply by the number of atoms of the element.

There are 2 hydrogen atoms, so multiply the mass by 2.

Now, find the mass of H₂O. Add the mass of 2 hydrogen atoms and 1 oxygen atom.

Next, find the amount of moles using the molecular mass we just calculated. Set up a ratio.

\(0.032 \ g \ H_2 O* \frac{ 1 \ mol \ H_2 O}{18.0152 \ g \ H_2 O}\)

Multiply. The grams of H₂O will cancel out.

\(0.032 * \frac{1 \ mol \ H_2 O}{18.0152 }\)

\(\frac{0.032 *1 \ mol \ H_2 O}{18.0152 }\)

\(0.00177627781 \ mol \ H_2 O\)

The original measurement given had two significant figures (3,2). We must round to have 2 significant figures. All the zeroes before the 1 are not significant. So, round to the ten thousandth.

The 7 in the hundred thousandth place tells us to round up.

\(0.0018 \ mol \ H_2 O\)

There are about 0.0018 moles in 0.032 grams.

Lightness measures the brightness of a color and ranges from 0% (black) to 100% (white).

The brightness of a color refers to the intensity of its lightness or darkness. It is determined by the amount of light reflected by the color. Brightness is often used interchangeably with value or tone, which refer to the lightness or darkness of a color.

In color theory, brightness is often represented on a scale from 0 to 100, with 0 being completely black and 100 being completely white. Colors with higher brightness values appear lighter and colors with lower brightness values appear darker.

Brightness can also be affected by the saturation of a color, which refers to the intensity of its hue or pure color. A highly saturated color appears more vibrant and intense, while a less saturated color appears more muted.

Visit here to learn more about color theory brainly.com/question/26331602

#SPJ11

Answer:

Gas

Explanation:

The question is asking solid, liquid or gas. Gas particles are the smallest.

Answer:

0.694 cents per second

Explanation:

25x100=2500 cents per hour, 2500/60 = 41.67 per minute and 41.67/60=0.694 cents per second

This problem is providing the energy of a photon of light as 2.95 × 10⁻¹⁷ J and it is required to calculate its frequency, according to the electromagnetic spectrum theory. At the end, the answer turns out to be 4.52x10¹⁶ Hz according to the following:

In chemistry, we use the electromagnetic spectrum in order to know how the wavelength, frequency and energy of particles are related to each other. In this particular case, we have a photon and the frequency can be calculated with the following arrangement:

\(E=h\nu\\\\\nu=\frac{E}{h}\)

Whereas E is the energy, h the Planck's constant and ν the frequency. Thus, we plug in these first two to obtain:

\(\nu=\frac{2.95x10^{-17}J}{6.626x10^{-34}J*s}\\\\\nu=4.45x10^{16}s^{-1}=4.45x10^{16}Hz\)

Learn more about the electromagnetic spectrum: https://brainly.com/question/15576247

Jose should focus his study on Particles called Electrons present outside the nucleus of an atom.  option (d)

Atom is defined as the smallest particle of matter and is composed of subatomic particles protons, Neutrons and Electrons. Protons have a positive charge and Neutrons have neutral charge; they are concentrated at the Nucleus. Electrons are electrically negative and spin around the Nucleus in specialized pathways called Orbits or shells.

The Atom is electrically neutral due to equal number of Protons and Electrons. Nucleus has a positive charge so negatively charged electrons are attracted to the positive core or Nucleus. The number of electrons in orbit is in increasing order of energy level. The orbits near the nucleus have less number of electrons and this is called the Principal Quantum Number.

Learn more about Atom here:

https://brainly.com/question/13654549

#SPJ4

The correct answer is: The hammer hits the ground before the feather on Earth, but the feather hits the ground first on the moon. This is because of the low gravity on the moon, which means the feather will not be affected by the same amount of force as the hammer.

Gravity is a natural phenomenon by which all physical bodies attract each other. It is most commonly experienced as the weight force that objects with mass exert on each other, though it also manifests itself through other phenomena such as tidal forces. Gravity is one of the four fundamental forces of nature and is the weakest of the four. It has an infinite range, though its effects become increasingly weaker on farther objects.

To learn more about gravity
https://brainly.com/question/9934704
#SPJ1

Answer:

C should be your answer

Explanation:

I have notes with that question

Answer:

356

Explanation:

3.56 g = 3.56(100) = 356

there are 100cg in 1g

Neon gas would have the largest partial pressure among the mixture of noble gases based on Dalton’s law of partial pressure and ideal gas law.

By understanding Dalton’s law of partial pressure and ideal gas law, the relationship between the mole fraction and partial pressure can be determined. Dalton’s law of partial pressure states that the total pressure of the mixture of gases is just the same as the pressures that each gas would exert if it were present alone (Chang and Goldsby, 2013).

Ideal Gas Law: P= nRT/V

Let: partial pressure = p and total pressure=P

p_neon + p_argon + p_xenon = P

(n_neon)(RT/V) + (n_argon)(RT/V) +(n_xenon)(RT/V)= (n_total)(RT/V)

Mole fraction is the dimensionless number that expresses the ratio of the number of moles of a specific substance to the number of moles of all the components. Mole fraction can also be equal to the ratio of partial pressure and total pressure.

Mole fraction of neon (x_neon) = p_neon / P

x_neon = (n_neon)(RT/V)/(n_total)(RT/V)

x_neon = (n_neon)/(n_total)

Therefore, the partial pressure of a component is directly proportional to its mole fraction. This means that the higher the mole fraction, the higher the partial pressure is.

For more information regarding Dalton’s law of partial pressure, please refer to the link https://brainly.com/question/14119417.

#SPJ4

Answer:

Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through them. Electricity is the flow of electrons or ions.

Explanation:

hope it helped:)))))

A major polling organization wants to predict the outcome of an upcoming national election (in terms of the proportion of voters who will vote for each candidate). They intend to use a 95% confidence interval with margin of error of no more than 2.5%. the minimum sample size needed to achieve is approximately 6,149 voters.

To determine the minimum sample size needed to achieve a 95% confidence interval with a margin of error of no more than 2.5%, we need to use the formula for sample size calculation:

n = \(Z^2 * p * (1-p)) / (E^2)\)

Where:

- n is the required sample size.

- Z is the z-score corresponding to the desired confidence level (in this case, 95%). The z-score can be obtained from the standard normal distribution table, which is approximately 1.96 for a 95% confidence level.

- p is the estimated proportion of voters who will vote for a candidate. Since we don't have an estimated proportion, we can use 0.5 as a conservative estimate, assuming an equal distribution between the candidates.

- E is the desired margin of error, which is 2.5% or 0.025.

Plugging in the values, we get:

n = \((1.96^2 * 0.5 * (1-0.5)) / (0.025^2)\)

n = (3.8416 * 0.25) / 0.000625

n = 3.8416 / 0.000625

n ≈ 6148.96

Therefore, the minimum sample size needed to achieve a 95% confidence interval with a margin of error of no more than 2.5% is approximately 6,149 voters.

Learn more about z-score here:

https://brainly.com/question/31613365

#SPJ11

Answer:

150000 degrees

Explanation:

Answer: X4Z3 - Apex :)

Explanation:

Sorry, I know this is late. Hope it helps everyone else.

1.57g of iron(iii) oxide will be produced.

What do you mean by ideal gas equation?

The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as

PV = nRT

Where,

P is the pressure of the ideal gas.

V is the volume of the ideal gas.

n is the amount of ideal gas measured in terms of moles.

R is the universal gas constant.

T is the temperature.

V = 6.50 L

T = 50.2 degree celsius = 50.2 + 273.15 K = 323.35 K

P = 0.121 atm

Using ideal gas equation,

n = PV/ RT = 0.121 atm* 6.50 L / 0.0821 * 323.35 K = 0.0296 mol

0.0296 mol of H20* 1mol Fe2O3 / 3mol H2O * 159.69g of Fe2O3/1 mol Fe2O3= 1.57g

So, 1.57g of iron(iii) oxide will be produced.

To know more about ideal gas equation from the given link:
https://brainly.com/question/20348074
#SPJ4

In the formation of compound 7, the function of the third reagent, CI3CCNH(OBn) and CF3SO3H, is to carry out a deprotection reaction. It removes the benzyl (Bn) protecting group from the compound, resulting in the formation of the desired product.

The choice of this specific reagent is likely due to its ability to selectively remove the benzyl protecting group without affecting other functional groups and deprotection reaction present in the compound. Selectivity is an important factor in organic synthesis to ensure the desired transformation occurs without causing unwanted side reactions or damaging other parts of the molecule.

If a different reagent with similar reactivity and selectivity were used, a similar product would be formed. However, the choice of reagent depends on several factors, including the specific protective group being removed, the compatibility with other functional groups, and the desired reaction conditions.

In summary, the third reagent, CI3CCNH(OBn) and CF3SO3H, functions as a deprotection reagent in the formation of compound 7. Its selection is based on its ability to selectively remove the benzyl protecting group, and using a similar reagent with comparable reactivity and selectivity would yield a similar product.

To know more about deprotection reaction click here :

https://brainly.com/question/33450096

#SPJ11

Answer:

78g/mol

hope its helps u

The effect of increasing the pressure of H2 gas in the cathode compartment on the electromotive force (emf) of the cell depends on the type of cell being considered.

In a hydrogen fuel cell, where hydrogen is oxidized at the anode and combined with oxygen at the cathode to produce water, increasing the pressure of H2 gas in the cathode compartment will have no direct effect on the emf of the cell. The emf of a hydrogen fuel cell is primarily determined by the redox reactions occurring at the anode and cathode, as well as the electrochemical potentials of those reactions. Therefore, increasing the pressure of H2 gas in the cathode compartment will not cause a change in the emf of the cell. On the other hand, if we consider a concentration cell, where the emf is based on the difference in concentration between the anode and cathode compartments, increasing the pressure of H2 gas in the cathode compartment would result in an increase in the emf of the cell. This is because the increased pressure would cause a higher concentration of H2 gas in the cathode compartment, leading to a greater concentration gradient between the anode and cathode compartments and thus an increased emf.

Learn more about pressure here : brainly.com/question/30673967
#SPJ11

Hydra, a type of cnidarian, have equal survival rates through life because they are equally fit at all stages. Hydra are an example of an organism with a type I survivorship curve. Thus, the correct option is b. II.

Differences between how energy moves through an ecosystem compared to how chemicals move through the ecosystem. The fundamental difference between how energy moves through an ecosystem compared to how chemicals move through the ecosystem is that energy can not be recycled. Energy is obtained from the sun and is stored in organic molecules, and it flows through an ecosystem through metabolic processes. However, the number of chemicals like carbon, oxygen, nitrogen, water, and phosphorus remains constant in an ecosystem.

Tropical rainforest soils are usually nutrient-poor and low in organic matter. Therefore, option c. nutrient-poor and low in organic matter is the correct answer. The soil in the tropical rainforest is nutrient-poor because heavy rainfall washes away the nutrients, and the soil contains a high level of aluminum and iron, which are toxic to plants. Due to these reasons, there is slow decomposition of organic matter that makes the soil low in organic matter.

Thus, the correct option is b.

To learn more about  ecosystem check the link below-

https://brainly.com/question/842527

#SPJ11