I need help to answer this question. I don’t understand how to do this.

Bromine Trifluoride is a colourless to grayish-yellow fuming liquid with a strong odour. It has a strong reaction to water. It is a fluorinating agent as well as an electrolytic solvent.

Bromine trifluoride was first described in 1906 by Paul Lebeau, who obtained it by reacting bromine with fluorine at 20 °C: Br 2 + 3 F 2 2 BrF. Bromine trifluoride is formed by disproportioning bromine monofluoride: 3 BrF BrF 3 + Br

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Bromine Trifluoride is a colourless to grayish-yellow fuming liquid with a strong odour. It has a strong reaction to water. It is a fluorinating agent as well as an electrolytic solvent.

Bromine trifluoride was first described in 1906 by Paul Lebeau, who obtained it by reacting bromine with fluorine at 20 °C: Br 2 + 3 F 2 2 BrF. Bromine trifluoride is formed by disproportioning bromine monofluoride: 3 BrF BrF 3 + Br

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Rutherfordium when decomposes and loses two neutrons, both these rutherfordium isotopes produce neutrons as they undergo their nuclear decay into nobelium.

Rutherfordium's reactivity with the halogens is unclear because so little of it has ever been produced. One would anticipate that it will behave similarly to zirconium and hafnium, which are just above rutherfordium in the periodic table (two places above). After the rutherfordium decays, the distinctive nobelium decay energy and half-life were also seen. Atoms have been created rather infrequently. It is solely employed at this time for research.

The biological function of rutherfordium is unknown. When Rutherfordium, the 104th element on the periodic table, was first artificially created in the 1960s, it sparked a decades-long international debate. The main point of contention was who should get to name the new element. Traditionally, the person who discovers an element is given the privilege of naming it, but this becomes complex when two parties have conflicting claims of discovery.

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Answer:

[tex]6.029 \times 10^{23} molecules[/tex]

Adding deionized water into a solution containing ions will affect the electrical conductivity of the solution because the ions in the solution will be attracted to the water molecules.

Deionized water is water that has had its ions removed. This means that it will not conduct electricity.It will cause the ions to be more spread out in the solution, which will decrease the electrical conductivity of the solution. When deionized water is added to a solution containing ions, the electrical conductivity of the solution will be reduced. The reason for this is that the ions in the solution will be attracted to the water molecules, and this will reduce the number of ions that are available to conduct electricity.

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Answer:

1.52x10^-21 grams/atom K

Explanation:

The molar mass of potassium (K) is 39.1 g/mole.  One mole = 6.02x10^23 atoms of K.

 (25 K atoms)*(39 g/mole)(1 mole/6.023x10^23 atoms) = 1.52x10^-21 grams/atom K

Try this? I'm not sure if i understood the question correctly

A composite photocatalyst of copper phosphotungstate/titanium dioxide (Cu-H3PW12O40/TiO2) : prepared by sol-gel hydrothermal synthesis.The composite catalyst was characterized by X-ray diffraction (XRD), UV–vis-diffuse reflectance spectroscopy (UV-VIS-DRS), Fourier converted infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS)、scanning electron microscopy (SEM) and power dispersive X-ray spectroscopy (EDS). The photocatalytic oxidation of a high-concentration NH4+/NH3  occured under ultraviolet (UV)light. The composite catalyst exhibited higher photocatalytic activity than that of TiO2. When  300 mg·L−1, the initial pH was 11, the catalyst concentration was 1.5 g·L−1, the loading level of Cu-H3PW12O40 was 40%, the aeration rate was 1.5 L·min−1, and lastly the removal rateof NH4+/NH3 by the composite photocatalyst could reach >80%. Very little NO2− and NO3− were produced,  and N2 was the main product.

Provided all set of given quantum numbers are allowed.

(a) n = 3, ℓ = 3, mℓ = 0, ms = -½

For n = 3, ℓ = 3 is not possible

ms can never be a negative value

mℓ cannot equal -1

All of these quantum numbers are allowed

(b) n = 4, ℓ = 3, mℓ = 2, ms = -½

When n = 4, ℓ = 3 is not possible

ms can never be a negative value

mℓ cannot equal 2 when ℓ = 3

All of these quantum numbers are allowed

(c) n = 4, ℓ = 1, mℓ = 1, ms = +½

When ℓ = 1, mℓ = 1 is not possible

ms can not be positive

mℓ cannot equal 1 when n = 4

All of these quantum numbers are allowed

(d) n = 2, ℓ = 1, mℓ = -1, ms = -1

When n = 2, ℓ = 1 is not possible

ms can never be a negative value

ms cannot equal -1

All of these quantum numbers are allowed

(e) n = 5, ℓ = -4, mℓ = 2, ms = +½

mℓ cannot equal 2

ℓ cannot be a negative number

n has a maximum of four

All of these quantum numbers are allowed

(f) n = 3, ℓ = 1, mℓ = 2, ms = -½

When ℓ = 1, mℓ = 2 is not possible

ms can never be a negative value

ℓ cannot be 1 when n = 3

All of these quantum numbers are allowed

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If the bromine gas in flask is attached to an airless chamber it liquefies and when the tap opens the bromine liquid comes outside.

Bromine is an element in 17th group of periodic table and it is a halogen exists in gaseous state.

When we apply sufficient pressure to a gas in a container the gas molecules starts condensing and then forms changes to its liquid state.

Therefore, in the airless flask where the pressure is higher the bromine gas starts to liquify and thus the tap pour the bromine liquid.

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An engineer need to introduce heat pump systems when designing a heating/cooling system for a home in a cooler or warmer climate.

For all climates, heat pumps provide a more energy-efficient furnace and air conditioner replacement. Heat pumps, like your refrigerator, use power to move heat from a cold space to a warm space, warming the warm space and making the cool space cooler. Therefore, an engineer may introduce heat pump systems while designing a house in any kind of climate.

In the winter, heat pumps transfer heat from the chilly outside to your comfortable home. In the summer, heat pumps transfer heat from your home to the outside.

Heat pumps can effectively supply your home with acceptable temperatures since they transfer heat rather than producing it.

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The final volume of the air assuming constant temperature is 21.607 Liters using Boyle's gas law.

The empirical relation states that under constant temperature, the pressure (p) of a given amount of gas changes inversely with its volume (v); that is, pv = k.

Given,

Initial volume = 2.05 Liters.

Height =  98.70 meters

Final pressure = 1.00 atm.

Initial pressure =10.54atm.

PV = k

P₁V₁=P₂V₂

Substituting the given parameters into the formula,

10.54 × 2.05 = 1 × V₂

V₂ = 21.607

Final volume = 21.607 Liters.

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Three things that would make the control group ineffective include the following below:

This is referred to as the group which is doesn't experience any experimental treatment by scientists and are used to compare another in this scenario.

The control group in other to be effective must have salt not being added which is compared to the others with salts to determine if it has any effect on the boiling point. The same volume of water should also be added to get an accurate result.

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Answer: Number 1, since the control group doesn't have salt, to make it ineffective is to add salt, another one is if you don't boil the control group. And lastly, if you don't add water to the pot. It's pretty simple if you think about it, and to verify it, I did it on apex and it worked.

So

1. Add Salt

2. Don't Boil

3. Don't Add Water

I hope this helps.

Distance and speed are scalars while displacement and velocity are vector quantities, scalars are not concerned with direction while vector are conscious with direction.

1. Distance and speed are scalars while displacement and acceleration are vector quantities.

2. The quantity that is ignorant of the direction is referred to as a scalars quantity.

3. A quantity that is conscious with direction is Vector quantity.

Distance vs Displacement,

The displacement is the shortest distance between the final and the initial position of the body while the distance is the actual distance covered by the body.

The displacement has direction from initial to final position, while distance has no direction.

The distance can never be zero while the displacement can be zero, negative or positive.

Negative displacement state that the direction of displacement of the body is in negative direction.

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8.6 mole sample of NO₂ in a 5. 1 L container has 4.6 atmospheric pressure at 33 K.

Given, number of moles of No₂(n) = 8.6 mole

Volume (V) = 5.1 liters

Temperature (T) = 33K

R= 0. 08206 L•atm / (mol•K)

Using ideal gas equation ,

PV=nRT

P (5.1L) = (8.6mol) (0.08206L•atm/(mol•K)) (33K)

P (5.1) = 8.6 × 0.08206 × 33

P (5.1) = 23.3

P = 23.3 ÷ 5.1

P = 4.6 atm

Hence, the pressure of the given gas is 4.6 atmosphere (atm).

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Answer:

False

Explanation:

The base unit is "meter."

Nanometer is equal to one billionth of a meter.

The answer to the statement " Measuring a chemical property is nondestructive " is true.

The chemical properties of substances such as boiling point, melting point, pH, reactivity, combustion, density, flammability, toxicity, solubility or even oxidation states are different characteristics which one can test for in a substance and does not affect the substances themselves in the process.

That being said, when you test for measure a chemical such as from the any of the ones above, it means you want to see or identify or observe the chemical composition of the substance. This won't affect the substance.

For example, when measuring the pH of a substance, that is; measuring the degree of acidity or alkalinity of a substance, it does not affect the substance in the test but reveals to us more about the chemical level or composition of the substance in details.

So therefore, we can now confirm that testing or measuring the chemical features of a substance is harmless to the substance itself.

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Answer:

Plant Reproduction

When plants reproduce asexually, they use mitosis to produce offspring that are genetically identical to the parent plant. The advantage of asexual reproduction is that it allows successful organisms to reproduce quickly. ...

When plants reproduce sexually, they use meiosis to produce haploid cells that have half the genetic information of the parent (one of every chromosome)

Explanation:

HOPE IT HELPS YOU

The similarities which exist between a freezing water and a morning dew on a plant surface is that:

The correct answer choices are options b and d.

Matter means any thing or substance that has mass and occupies space. There are four different phases of matter including the solid, liquid, gas and plasma.

When a matter changes from one form or state to another, a change of state is said to have taken place. For instance when we place a water ( liquid ) into a freezer such that it turns to ice, this is known as what we call freezing. Here, the water is the liquid and the ice formed is the solid.

So we say freezing means the changing of liquid to solid.

So therefore, it can be deduced from above that there is a change of state of matter when water is freezed into ice and when dews appears of leaves.

Complete question:

What do these two changes have in common? dew appearing on grass in the morning water freezing into ice Select all that apply.

a. Both are chemical changes.

b. Both conserve mass.

c. Both are only physical changes.

d. Both are changes of state.

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10.0 trillion DNA molecules are equal to option a. 1.66 × 10–11 moles.

Deoxyribonucleic acid is a polymer composed of polynucleotide chains that coil around every different to shape a double helix sporting genetic instructions for the improvement, functioning, increase, and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.

DNA is fabricated from chemical constructing blocks known as nucleotides. those building blocks are the product of three components: a phosphate institution, a sugar institution, and one of four styles of nitrogen bases. To shape a strand of DNA, nucleotides are connected into chains, with the phosphate and sugar corporations alternating.

calculation:-

1 trillion = 10¹² DNA molecules

6.022 × 10²³ molecule = 1 mole

10¹² DNA molecules = 1 / 6.022 × 10²³ × 10¹²

                                 = 1.66 × 10–11 moles

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HCl compund contains covalent bond.

When 2 atoms exchange one or a lot of pairs of electrons, a covalent bond is formed.

A chemical bond is formed once the distinction between the leptonegativities of 2 atoms is just too tiny for associate electron transfer to occur and manufacture ions.

Let's determine which choice contains covalent bonding.

1. Al-N bonds exhibit some ionic properties in addition to being partially covalent. structure, 1.633, which is most likely influenced by the ionic properties of Al-N bonds [3].

2. Ca and N have electronegativities of 1.0 and 3.0, respectively. Therefore, the difference in electronegativity between Ca and N is (3.0-1.0) or 2.0. Thus, an ionic link exists between Ca and N. Ca3N2 C a 3 N 2 is hence an ionic compound.

3. Since covalent compounds are created by the exchange of electrons, NaCl is not a covalent compound; rather, it is an ionic compound.

4. Because the difference in electronegativity between hydrogen and chloride is less than 2.0, HCl is a covalent compound.

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Answer:

incomplete question need more information

The volume of concentrated 16 m nitric acid required is 7.81ml

Concentration of HNO3= 16M

We need to find the volume of HNO3. V=?

Concentration of required solution= 0.250M

Volume of required solution= 500M

So to solve this problem, we have to use the Molarity equation

m1v1=m2v2

So now we have to substitute the given values in the molarity equation

After doing that we get:
16M x V1 = 0.250M X 500M

V1= 0.250 X 500M/ 16M

Therefore V1= 7.81ML

Hence, the volume of concentrated 16 m nitric acid required is 7.81ml in order to prepare 500.0 ml of a 0.250 m hno3(aq) solution.

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The globally averaged surface air temperature would decrease if the atmosphere were composed entirely of nitrogen and oxygen. The main greenhouse gases in the atmosphere are water vapor, carbon dioxide, and methane.

 These gases allow sunlight to pass through the atmosphere and then trap some of the heat that radiates back from the Earth's surface. Nitrogen and oxygen are not greenhouse gases, so they would not trap heat in the atmosphere.The global average surface air temperature would decrease because nitrogen and oxygen are both transparent to incoming solar radiation, meaning that less heat would be trapped at the surface of the Earth. Additionally, the greenhouse effect would be weaker without other greenhouse gases like water vapor and carbon dioxide, further cooling the planet.

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Answer: 110.11g

Explanation:

If this is the question then it is as simple as adding up the masses of the different elements.

The physical states represented by each graph region are;

As time proceeds, the particles become less mobile and more ordered in structure.

A change of state refers to the processes by which matter changes from one physical state to another.

A change of state of matter occurs when heat is added or removed from a substance.

The stages of matter are:

The processes of change of state include;

For pure substances, a change of state occurs at a definite temperature.

This property is used to determine the purity of substances.

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The given statement is true. If we divide the molar mass of the compound by the empirical formula mass, the result should be a whole number or very close to a whole number. multiply all the subscripts in the empirical formula by the whole number found in step 2. the result is the molecular formula.

If we write the above statement in the equation or formula then we will get

[tex]\frac{Empirical formula mass}{ Molecular mass}[/tex] = n

Where 'n' is always a whole number

Now, let's understand the above statement with the help of an example.

If we take glucose, a monosaccharide sugar, having molecular formula C₆H₁₂O₆.

The molar mass of glucose is 300 g/mole. Its empirical formula mass is 180 g/mol.

Now by diving them, we will get a whole number

180 / 30 = 6 ( A whole number)

The empirical formula of glucose is CH₂O. If we multiply all the subscripts in the empirical formula (CH₂O) by 6, the result is the molecular formula i.e C₆H₁₂O₆.

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Solutions 1 and 3 because they are strong acids and a strong base. Option A.

Strong acids and strong bases are completely ionized in an aqueous solution. Weak acids and weak bases also ionize, but only partially and the reaction is reversible. So you know if an acid or base is strong or weak. A simple way to determine strength is to add the acid or base to water. A higher reactivity means a stronger acid or base.

One of the simplest tests to determine whether a solution is an acid or base is the litmus paper test. To do this, dip a special strip of paper so-called litmus paper into the solution and observe the color of the paper. Litmus paper turns red in acidic solutions and blue in basic solutions. Sodium hydroxide is the strongest base because it completely dissociates to form sodium and hydroxide ions. These hydroxide ions are further treated with hydrogen ions by an acid to completely ionize the hydrogen ions.

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STEP-BY-STEP EXPLANATION:

Given the below compound

Answer:

raise the temperature of one gram of a substance by one degree Celsius

Explanation:

Heat capacity is a physical property of matter, which is defined as the amount of heat to be supplied to something to produce a unit change in its temperature. Heat capacity is also called thermal capacity.

The solubility product, Ksp of barium phosphate is helpful to calculate the molar solubility and concentration of ions.

The equilibrium constant for a solid material dissolved in an aqueous solution is the solubility product constant, Ksp. It denotes the concentration at which a substance dissolves in solution. A material's Ksp value indicates how soluble it is - larger the Ksp value, the more soluble it is. Solubility equilibrium is a sort of dynamic equilibrium that occurs when a chemical substance in solid form is in chemical equilibrium with that compound's solution. The solid may dissolve unmodified, by dissociation, or through chemical reactivity with another solution element, such as acid or alkali. The solubility product is determined by the molar concentrations of the ions in saturated solutions, whereas the ionic product is determined by any solution.

Reaction:

[tex]Ba_3(PO_4)_2 \rightleftharpoons 3Ba^{2+} + 2PO_4^{3-}[/tex]

The solubility product of barium phosphate, Ksp =  1.3 x [tex]10^{-29}[/tex]

The expression of solubility product for barium phosphate is given as:

Ksp = [tex](3S)^3[/tex] x [tex](2S)^2[/tex] = 108 [tex]S^5[/tex]

1.3 x [tex]10^{-29}[/tex] x [tex](2S)^2[/tex] = 108 [tex]S^5[/tex]

[tex]S^5[/tex] = 1.3 x [tex]10^{-29}[/tex] / 108

S = 6.5479 x [tex]10^{-7}[/tex]M

Concentration of barium ions = [tex][Ba^{2+}][/tex] = 3 x 6.5479 x [tex]10^{-7}[/tex] = 1.9643 x [tex]10^{-6}[/tex]M

Concentration of phosphate ions = [tex][PO_4^{3-}][/tex] = 2 x 6.5479 x [tex]10^{-7}[/tex] = 1.3096 x [tex]10^{-6}[/tex]M

Molar solubility of [tex][Ba_3(PO_4)_2] \frac{[Ba^{2+}]}{3}[/tex] = 1/3 x 1.9643 x [tex]10^{-6}[/tex] = 6.5479 x [tex]10^{-7}[/tex]M

Solubility product of [tex]Ba_3(PO_4)_2[/tex] = 6.5479 x [tex]10^{-7}[/tex] x 601 = 0.0003935g/L

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