what is quantum numbers (n,l,ml,ms) for Ge

Answer:

500 cal

Explanation:

1 cal/g-C  * 5 g  * (100C) = 500 cal

There are approximately 1.62 x 10^25 water molecules in the 499.8 mL bottle of water.

To determine the number of water molecules in the given volume of water, we need to use the relationship between mass, volume, and molar mass of water.

First, we need to find the mass of water in the bottle:

Mass = Density * Volume

Mass = 0.967 g/mL * 499.8 mL = 483.9 g

Next, we need to convert the mass of water to moles using the molar mass of water. The molar mass of water (H2O) is approximately 18.015 g/mol.

Moles = Mass / Molar mass

Moles = 483.9 g / 18.015 g/mol = 26.88 mol

Finally, we can calculate the number of water molecules using Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules = Moles * Avogadro's number

Number of molecules = 26.88 mol * (6.022 x 10^23 molecules/mol) = 1.62 x 10^25 molecules

Therefore, there are approximately 1.62 x 10^25 water molecules in the 499.8 mL bottle of water.

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Answer:Temperature

Explanation:

Answer:

the genes and traits of the offspring is a 50/50 chance.

Explanation:

The type of reproduction has 2 parents involved

The other compound that makes up most of the other gases in the table is water vapor.

Water vapor is not listed in the table because it is not a pollutant. However, it is a significant component of exhaust gas, and it can contribute to smog formation. Water vapor is formed when the fuel in a petrol engine is burned. The combustion process produces water as a byproduct.

The amount of water vapor in the exhaust gas depends on the temperature of the combustion process. At higher temperatures, more water vapor is produced. Water vapor is not a pollutant in itself, but it can contribute to smog formation.

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Complete question:

this table shows the percentages of some gases in the exhaust from a petrol engine

nitrogen 68

carbon dioxide 15

carbon monoxide 1

oxygen 0.75

nitrogen oxides 0.24

hydrocarbons 0.005

sulphur dioxide 0.005

other gases

what is the name of the other compound that makes up most of the other gases in the table?

The following are three weather variables and the tools that can be used to observe and gather data on them to ascertain how air mass movements and weather changes are related:

Scientists can discover patterns and connections between changes in weather and changes in air mass movement by observing and recording data on these meteorological variables.

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Answer:

telophase

Explanation:

Answer:

swap

Explanation: because it is a low wet land

Answer:

4.   swamp

5.   Island

Plz mark brainliest:)

If the mass water content of the clod was 18%, its particle density is 2.65 g/cm³ and paraffin's density is 0.89 g/cm³,the bulk density is 1.728 g/cm³.

The term density is defined as the ratio of mass of a unit volume of a material substance. The formula for density is d = M/V,

First, determine the mass of the dry soil particles by subtracting the mass of the water from the total mass of the clod and paraffin:

Mass of dry soil particles = Total mass - Mass of water

= 993 g - (0.18 x 885 g)

= 850.3 g

Then we can determine the volume of the dry soil particles by dividing their mass by their particle density as follows:

Volume of dry soil particles = Mass of dry soil particles / Particle density

= 850.3 g / 2.65 g/cm³

= 321.4 cm³

i.Now, calculate the bulk density of the soil:

Bulk density = Mass of dry soil particles / Total volume

= 850.3 g / 492 cm³

= 1.728 g/cm³

ii. We can find the volume of voids by subtracting the volume of dry soil particles from the total volume of the clod as follows:

Volume of voids = Total volume - Volume of dry soil particles

= 492 cm³ - 321.4 cm³

= 170.6 cm³

Now, we can calculate the void ratio:

= Volume of voids / Volume of dry soil particles

= 170.6 cm³ / 321.4 cm³

= 0.531 or 53.1%

(iii) We can find the volume of water by multiplying the mass of water by the inverse of its density:

Volume of water = Mass of water / Density of water

= 0.18 x 885 g / 1 g/cm³

= 158.7 cm³

Now, calculate the degree of saturation:

Degree of saturation = Volume of water / Volume of voids

= 158.7 cm³ / 170.6 cm³

= 0.93 or 93%

Thus, the bulk density is 1.728 g/cm³.

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Answer:

O2

Explanation:

for find the limiting reactant you must calculate the moles of the reactants from the amount that you have and from the MM:

MM FeS2 = 120n  = 26.2g / 120g/mol = 0,218 mol

MM O2  = 32n = 5,44g/32g/mol = 0,17 mol

The limiting reactant is  

O2

Answer:

\(\boxed {\tt 116}\)

Explanation:

To find the mass number of an isotope, add the number of neutrons and protons.

\(mass \ number = neutrons + protons\)

There are 66 neutrons and 50 protons in the this isotope of tin.

\(mass \ number = 66+50\)

Add 66 and 50.

\(mass \ number = 116\)

The mass number of this tin isotope is 116.

Answer:

47.42 amu.

Explanation:

The following data were obtained from the question:

Isotope A (Bl–47)

Mass number = 46.91 amu

Abundance = 53.4%

Isotope B (Bl–48):

Mass number = 47.98 amu

Abundance = 46%

Isotope C (Bl–50)

Mass number = 50.12 amu

Abundance = 100 – (53.4 + 46)

Abundance = 100 – 99.4

Abundance = 0.6%

Average atomic mass of Blairium =?

The average atomic mass can be obtained as follow:

Average atomic mass = [(mass of A × A%)/100] + [(mass of B × B%)/100] + [(mass of C × C%)/100]

Average atomic mass = [(46.91 × 53.4)/100] + [(47.98 × 46)/100] + [(50.12 × 0.6)/100]

Average atomic mass = 25.05 + 22.07 + 0.3

Average atomic mass = 47.42

Therefore, the average atomic mass of blairium is 47.42 amu.

Answer:

Boiling

Explanation:

1.57 x 10²⁴ atoms of carbon to moles of carbon is 6.72 mole

Mole is the SI unit of amount of substance of a specified elementary entity

Here given data is

Atoms of carbon =  1.57 x 10²⁴

We have to calculate moles of carbon = ?

So one mole of carbon specifies 6.022×10²³ individual carbon atom that is mole of carbon

Then  1.57 × 10²⁴ atoms/6.022×10²³C×atom×mol⁻¹

Moles of carbon = 6.72 mole

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Answer:

Mass of solute = 0.0036 g

Explanation:

Given data:

Concentration of Cl⁻ = 15.0 ppm

Volume of water = 240 mL

Mass of Cl⁻ present = ?

Solution:

1 mL = 1 g

240 mL = 240 g

Formula:

ppm = mass of solute / mass of sample ×1,000,000

by putting values,

15.0 ppm = (mass of solute / 240 g) ×1,000,000

Mass of solute = 15.0 ppm ×  240 g / 1,000,000

Mass of solute = 0.0036 g

During the chemiosmosis , ATP is synthesized when H⁺ ions move through a channel in ATP synthase.

The chemiosmosis is the movement of the ions through the semipermeable membrane . The ATP synthesis the free energy which is obtained by the electrons that are passes through the several carriers.  chemiosmosis is the process of the pumping of the protons through the semipermeable membrane to obtained the proton gradient. the energy will be released in the process and results in the ATP synthesis.

Thus, when the  H⁺ ions will move through the channel in the ATP synthase , ATP is synthesized , in the process of the chemiosmosis.

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In this case, according to the Raoult's law, we can find the mole fraction of 79 wt% benzene and 21 wt% toluene at 50 °C in the vapor phase as follows:

\(y_iP=x_iP_i\)

However, we first have to calculate the mole fractions in the solution as follows (b stands for benzene and t for toluene):

\(\\x_b=0.79\frac{g\ benzene}{g\ solution} *\frac{(78.11*x_b+92.14*x_t)}{1mol\ solution} *\frac{1mol\ toluene}{78.11g\ toluene} \\\\x_b=0.79\frac{g\ benzene}{g\ solution} *\frac{78.11*x_b+92.14*(1-x_b)}{1mol\ solution} *\frac{1mol\ toluene}{78.11g\ toluene}\\\\x_b=0.79*(x_b+1.18*(1-x_b))\\\\x_b=0.79x_b+0.932-0.932x_b\\\\x_b=\frac{0.932}{1+0.932-0.79} =0.816\\\\x_t=1-x_b=1-0.816=0.184\)

Next, we calculate the total pressure as follows, according to the Dalton's law:

\(P=x_bP_b+x_tP_t=0.816*271mmHg+0.184*91.5mmHg=237.972mmHg\)

Finally, the mole fractions of the vapor phase turn out:

\(y_b=\frac{0.816*271mmHg}{237.972mmHg}=0.929\\\\y_t=1- 0.929=0.071\)

Learn more:

Answer:true

Explanation:

According to the given statement Na of the atoms listed below has the largest radius.

An atom is made up of a core nucleus and one or even more electrons with negative charges that orbit it. The positively charged, comparatively hefty protons and neutrons that make it up the nucleus may be present. The fundamental building components of matter are atoms.

Atoms are made up of a nucleus in the center that is surrounded by protons, neutrons, and electron. Uranium is divided into smaller atoms during the fission process, creating new atoms. The creation or atoms in enormous numbers can be seen in the Big Bang and Supernova phenomena.

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Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

When the drops of acid or base were added to the water versus when the drops were added to the phosphate buffer, the pH changed considerably unlike in the phosphate buffer.

This is because the buffer neutralizes the drops of acid or base added to it.

A buffer solution is an acidic or basic aqueous solution made up of a mixture of a weak acid and either its conjugate base or base and its conjugate acid. A little bit of a strong acid or base applied to it barely affects its pH.

Hence, when drops of acid or base are added to a buffer such as a phosphate buffer, there is no observable change in the pH of the buffer solution. However, a considerable change in pH occurs when drops of an acid or base are added to water.

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1. The number of mole of C₃H₈ needed to make 15.5 moles of CO₂ is 5.2 moles

2. The number of moles of O₂ needed is 25.8 moles

The number of mole of C₃H₈ needed can be obtained as illustrasted below:

C₃H₈ + 5O₂ -> 3CO₂ + 4H₂O

From the balanced equation above,

3 moles of CO₂ was obtained from 1 mole of C₃H₈

Therefore,

15.5 moles of CO₂ will be obtain from = (15.5 × 1) / 3 = 5.2 moles of C₃H₈

Thus, number of mole of C₃H₈ needed is 5.2 moles

We can obtain the number of mole of O₂ needed as follow:

C₃H₈ + 5O₂ -> 3CO₂ + 4H₂O

From the balanced equation above,

3 moles of CO₂ was obtained from 5 moles of O₂

Therefore,

15.5 moles of CO₂ will be obtain from = (15.5 × 5) / 3 = 25.8 moles of O₂

Thus, number of mole of O₂ needed is 25.8 moles

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Complete question:

How many moles of C₃H₈ are needed to make

15.5 moles of CO₂? How much O₂ will be needed?

C₃H₈ + 5O₂ -> 3CO₂ + 4H₂O

Answer:

CDE

Explanation:

If your on USA test perp

The questions are most relevant to increasing the strength of the electromagnet are Does increase the current in .....?, Will increasing the number of loops of wire around the.....? and Will positioning the loops of….? Therefore, option C, D and E are correct.

The characteristics known as electromagnetic properties determine how quickly a substance will absorb or emit electromagnetic radiations.

We may be familiar with electromagnetic radiations such as radio waves, microwaves, ultraviolet rays, infrared rays, and visible light rays.

Transverse waves characterize electromagnetic radiation.They move across fluctuating magnetic and electric fields so that they are perpendicular to the wave's path of propagation and at right angles to one other.

Thus, option C, D and E are correct.

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Answer:

2Fe₂O₃(s) → 4Fe(s) + 3O₂(g)

Explanation:

The unbalanced reaction is:

To balance the oxygen atoms, we put a 2 before Fe₂O₃ and a 3 before O₂(g) - so as to make the total of O atoms in both sides 6 -:

There are four Fe atoms on the left side and only one on the right side, so we put a 4 before Fe(s):

Now the equation is balanced: there is an equal number of both Fe and O atoms in both sides of the equation.

Answer:

The radius of the atom Ta is 142pm

Explanation:

To solve this question we need to know that for a body-centered cubic lattice we have the equations:

X = 4/√3 R

Where X is edge length and R is radius of the atom in the lattice.

If adge length of unit cell is 328 pm:

328pm = 4/√3 R

328pm * √3 / 4 = R

142pm = R

The radius of the atom Ta is 142pm

The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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Answer:

True. the density of water is 1.0 mg