If 67. 8 moles of gas was measured out into a helium balloon how many molecules would be present within the balloon

Answer:

41.09% B N. The formula in EDTA

Explanation:

The 1-heptene. cis 2-heptene. trans 2-heptene has the longest retention time.

What is isomers?

Isomers are substances that contain precisely the same number of atoms, i.e., they have the exact same empirical formula, but they differ from one another by the arrangement of the atoms.

What is heptane?

A straight-chain alkane containing seven carbon atoms is called heptane. In Jeffrey pine, it was discovered (Pinus jeffreyi). In addition to being a plant metabolite, it serves as a non-polar solvent. It is both an alkane and an organic volatile substance.

Therefore, 1-heptene. cis 2-heptene. trans 2-heptene has the longest retention time.

Learn more about isomers from the given link.

https://brainly.com/question/26298707

#SPJ4

Answer:

Because heat flows from warmer objects to cooler objects

Explanation:

Answer:

2.66 · 10⁵

Explanation:

There are 1440 minutes in a day. Which means that there is 266400 minutes in 185 days. And in scientific notation it is: 2.66 · 10⁵.

a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

Learn more about thermal radiation emission

brainly.com/question/28517392

#SPJ11

Answer:

b. They do not move through the rock cycle at the same rate

Explanation:

The rock cycle is the phenomenon used to describe the interrelation of the three forms in which rocks exists, and a rock is changed between forms due to the Earth's geologic process, such as erosion, weathering and plate tectonics

The rock cycle involves both chemical and physical transformation of rocks and therefore, the atoms and compounds make and cut connections, such that the rate at which each atom move through the rock cycle at different rate

The mass of the sample of water that releases 1829.8 J of heat while cooling 39.0°C is 11g.

Calorimetry is the science of measuring the heat absorbed or evolved during the course of a chemical reaction or change of state.

The mass of a substance can be calculated using the following formula;

Q = mc∆T

Where;

According to this question, a beaker of water of releases 1829.8 J of heat while cooling 39.0°C. The mass can be calculated as follows:

1829.8 = m × 4.184 × 39

m = 1829.8 ÷ 163.176

m = 11g

Learn more about calorimetry at: https://brainly.com/question/11477213

#SPJ1

U has a total of six electrons. This corresponds to carbon (C). A is the second most common element in the atmosphere.

The second most common element in the atmosphere is oxygen (O). E is a noble gas.

Noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Based on the given options, E could be xenon (Xe).

S is an alkali metal.

Alkali metals include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). Based on the given options, S could be sodium (Na).

O is a halogen.

Halogens include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). Based on the given options, O could be bromine (Br).

O has an atomic number larger than V but smaller than W.

Based on the periodic table, the atomic number of oxygen (O) is 8, which is larger than the atomic number of vanadium (V) (23) and smaller than the atomic number of tungsten (W) (74).

The charge on an L ion is +2.

The charge of +2 indicates that L must lose two electrons to form the ion. Based on the given options, L could be calcium (Ca).

C has five electrons in its outer energy fever.

Carbon (C) has four valence electrons, not five. This contradicts the given statement, so we need to revisit the deductions.

Learn more about carbon on

https://brainly.com/question/19083306

#SPJ1

Answer:

Explanation:

approx 30%

Reaction

C₃H₄ + 4O₂ → 3CO₂ + 2H₂O

20% purity = 20% x 200 = 40 g

mole C₃H₄ = mass : molar mass = 40 : 40 g/mole = 1

mole H₂O from reaction coefficient (C₃H₄ limiting reactant) = 2/1 x 1 mole = 2 mole

mass H₂O = mole x molar mass = 2 x 18 g/mole = 36 g

for 60% yield, H₂O produced  = 60% x 36 g = 21.6 g

Answer: 541 million to 485.4 million years ago

Explanation:

Because the oldest rocks with fossilized evidence of life on earth are at least 3.5 billion years old, life on earth must have started at least then.

According to a study, Earth may have been a "waterworld" without continents 3 billion years ago. Without any continents to divide the oceans, Earth may have been entirely submerged in water about 3 billion years ago, resembling a "waterworld." The 3.5 billion year old "stromatolites," which are hard structures made by microbes, also contain evidence of their presence. Stromatolites are produced when microbe-made sticky mats trap and organize sediments into layers. Even as the microbes disappear, minerals precipitate inside the layers, forming strong structures.

To know more about minerals :

https://brainly.com/question/1333886

#SPJ10

The false statement about soaps and detergents is that "Phosphate detergents can produce pollution problems.Phosphate detergents were commonly used in the past, but their use has been regulated due to their negative impact on the environment.

This statement is actually true. When phosphate detergents are used and the water containing them is discharged into lakes, rivers, or oceans, they can cause excessive growth of algae and other aquatic plants. This process, known as eutrophication, can lead to the depletion of oxygen in the water and harm aquatic life. Therefore, it is important to use detergents that are free of phosphates or to use them sparingly. Soaps and detergents have a polar and nonpolar end, making them effective emulsifiers for grease and oil. They are also surfactants, meaning they reduce the surface tension between liquids. it is important to be mindful of the types of detergents we use to minimize their impact on the environment.

To know more about detergents visit :

https://brainly.com/question/31432422

#SPJ11

The correct answer is c. proximal tubule: site of secretion of organic anions and cations.

The proximal tubule is a crucial part of the nephron, which is the functional unit of the kidney. It is responsible for the reabsorption of important solutes and water from the filtrate, as well as the secretion of organic anions and cations. The secretion of these substances is essential for maintaining proper electrolyte balance and eliminating waste products from the body.

The other options provided are not accurately matched with their functions. The ascending limb of the loop of Henle primarily functions in the reabsorption of sodium and chloride ions, not the secretion of potassium (K+). The descending limb of the loop of Henle is involved in the passive reabsorption of water, rather than the transport of solutes. Lastly, the distal tubule plays a role in the fine-tuning of electrolyte balance and regulation of acid-base balance, but the main site of reabsorption of calcium (Ca2+) and magnesium (Mg2+) occurs in the thick ascending limb of the loop of Henle, not the distal tubule.

Learn more about anions here :-

https://brainly.com/question/18534048

#SPJ11

Answer:

User mI3579 said, "Milk is best described as a colloid because colloids are mixtures that have particles that do not settle out. Colloids are also not large enough to be easily filtered out, yet they are big enough to be able to scatter light, therefore making the mixture seem cloudy."

Explanation:

Answer:

hoesntly its b

Explanation:

Answer:

A. 2Fe + 3Cl2 --> 2FeCl3

B. 2Fe + 3O2 --> 2Fe2O3

C. C4H10O + 4O2 --> 4CO2 + 5H2O

D. C7H16 + 11O2 --> 7CO2 + 8H2O

Explanation:

200ml of NaOH is required to reach the equivalence point.

Titration is a standard quantitative chemical analysis laboratory method for determining the concentration of a specified analyte. The titrant or titrator is a reagent that is produced as a standard solution of known concentration and volume. Titration is an essential technique in analytical chemistry, and it is also known as volumetric analysis.

A chemical reaction's equivalence point, also known as the stoichiometric point, is the point at which chemically equivalent quantities of reactants have been combined. The equivalence point for an acid-base reaction is the point at which the moles of acid and base would neutralise each other according to the chemical reaction.

To learn more about equivalence point and titration, here

https://brainly.com/question/14245137

#SPJ4

Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

Answer:  the empirical formula of potassium persulfate is KSO₄, and its molecular formula is K₂S₂O₇.

Explanation:  the empirical formula of potassium persulfate is KSO₄, and its molecular formula is K₂S₂O₇.

Answer:

As the metals cool, the particles slow down, and the temperature decreases. Thermal energy is related to the average kinetic energy of the particles.

Explanation:

Answer:0.423 meter

Explanation:

1.39 moles of O₂ are required to completely react with 75.0 grams of Sb.

The concept of molar ratio pertains to the proportion of moles of one substance that partakes in a chemical reaction in relation to the moles of another substance that also takes part in said reaction. This is a fundamental principle in chemistry and is used to determine the stoichiometry, or quantitative relationship, between reactants and products.

Equation:

4 Sb + 3 O₂ --> 2 Sb₂O₃

From the equation, we see that for every 3 moles of O₂, 4 moles of Sb react. Therefore, the conversion factor we need is:

3 mol O₂ / 4 mol Sb

Using this conversion factor, we can set up the problem as:

75.0 g Sb x 1 mol Sb / 121.76 g Sb x 3 mol O₂ / 4 mol Sb = 1.39 mol O₂

To know more about molar ratio, click here

https://brainly.com/question/17920577

#SPJ1

The solubility product equilibrium constant for PbCrO4 is 1.77 × 10⁻¹⁴ in  pigment chrome yellow.

To determine the solubility product equilibrium constant (Ksp) for the artist's pigment chrome yellow, PbCrO4, you first need to write the balanced dissolution equation:
PbCrO4 (s) ⇌ Pb²⁺ (aq) + CrO₄²⁻ (aq)
The solubility of PbCrO4 is given as 4.3 × 10⁻⁵ g/L. Convert this to moles per liter (M) using the molar mass of PbCrO4 (323.2 g/mol):
(4.3 × 10⁻⁵ g/L) / (323.2 g/mol) ≈ 1.33 × 10⁻⁷ M
Now, let's express the equilibrium concentrations in terms of the solubility (S):
[Pb²⁺] = [CrO₄²⁻] = 1.33 × 10⁻⁷ M
Finally, we can determine the Ksp:
Ksp = [Pb²⁺] [CrO₄²⁻] = (1.33 × 10⁻⁷ M)² ≈ 1.77 × 10⁻¹⁴
So, the solubility product equilibrium constant (Ksp) for the artist's pigment chrome yellow, PbCrO4, is approximately 1.77 × 10⁻¹⁴.

Learn more about solubility here

https://brainly.com/question/28170449

#SPJ11

Answer:

malleable

Explanation:

The image represent in malleable property of metal.

The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.

Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.

Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.

Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.

https://brainly.com/question/33514448

#SPJ2

The volume of one nanocontainer is the amount of space it can hold. To find the volume, you need to know the dimensions of the nanocontainer.

If the nanocontainer is a regular shape, such as a cube or a cylinder, you can use the appropriate formula to calculate the volume. For example, the volume of a cube is found by multiplying the length, width, and height of the cube. If the nanocontainer is an irregular shape, you can use water displacement to find the volume. Here's how it works:
1. Fill a graduated cylinder with a known volume of water.
2. Carefully place the nanocontainer into the cylinder, making sure it is fully submerged.
3. Measure the new volume of the water in the graduated cylinder.
4. The difference between the initial and final volume is the volume of the nanocontainer.
Remember to record your measurements accurately to get an accurate volume.

To know more about volume visit:

https://brainly.com/question/28058531

#SPJ11