3. In the journal article, 5% NaCl solution was used to crystallize lysozyme. The FW for NaCl is 58.44 g/mol. What is the molarity of the NaCl in the solution

Answer:

1.85 g per cm^3

The substance is Beryllium(if it is a single element, and not a compound)

Explanation:

The volume (in liters) of the carbon dioxide gas produced if the reaction is carried out at STP is 65.5 L

We'll begin by examining the eqaution for the reaction to get useful information about the reaction. Details below:

CH₄ +2O₂ -> CO₂ + 2H₂

From the balanced equation above,

1 L of methane, CH₄ reacted to produce 1 L of carbon dioxide, CO₂

With the above information, we can obtain the volume of carbon dioxide, CO₂ produced when 65.5 L of methane, CH₄ reacts at STP. Details below:

1 L of methane, CH₄ reacted to produce 1 L of carbon dioxide, CO₂

Therefore

65.5 L of methane, CH₄ will also react to produce 65.5 L of carbon dioxide, CO₂

Thus, the volume of carbon dioxide, CO₂ produced is 65.5 L

Learn more about volume:

https://brainly.com/question/9614052

#SPJ1

a)32.670 + 1.2240 = 33.8904

33.8904-14.0 = 19.8904

b)12.080 × 4.050 × 0.231

=54.36 × 0.231

=12.55716

c)(3.051 × 103) ×(2.00 × 10.2)=

314.253 × 20.4 = 6410.7612

The ideal gas law is given by PV = nRT. Here, we are required to find the volume of CH4 gas given its mass, temperature, and pressure. The molecular weight of CH4 is 16 g/mol.

Convert the temperature to Kelvin. K = C + 273 = 117 + 273 = 390 K. From the given mass of CH4, we can calculate the number of moles. n = m / M = 56.8 g / 16 g/mol = 3.55 mol.

Now, using the ideal gas law, we have P V = n R T, where R is the universal gas constant.

The value of R is 8.314 J/mol K (joules per mole Kelvin).

Therefore, substituting the values, we getP V = (3.55 mol)(8.314 J/mol K)(390 K)P V = 11,187.45 J.

Thus, V = 11,187.45 J / 445,000 PaV = 0.02516 m3.

Therefore, the volume of the gas is 0.02516 m³.

Learn more about ideal gas law here ;

https://brainly.com/question/13821925

#SPJ11

2,3,7,8-Tetrachlorodibenzodioxin (TCDD) (dioxin) has a drinking water standard of 3x\(10^{-8 }\) mg/L. According to EPA exposure estimates for home use, this level of exposure has a 1.29 x \(10^{-19}\) lifetime cancer risk.

To calculate the lifetime cancer risk from exposure to TCDD in drinking water, we can use the following formula:

where:

Concentration is the level of TCDD in drinking water (in mg/L)

Unit Risk is the cancer potency factor (in risk/mg/kg/day)

According to the EPA, the cancer potency factor for TCDD is 1.5 x \(10^{-7}\) (risk/mg/kg/day) for oral exposure. This means that for every milligram of TCDD per kilogram of body weight per day that a person is exposed to, their lifetime cancer risk increases by 1.5 x \(10^{-7}\).

To convert the drinking water standard for TCDD to a daily exposure level, we can use the following formula:

The EPA assumes a daily water intake of 2 liters for an adult. Therefore, for a drinking water concentration of 3 x \(10^{-8}\) mg/L, the daily exposure would be:

To calculate the lifetime cancer risk from this daily exposure, we need to convert the daily exposure to a dose in milligrams per kilogram of body weight per day. The EPA assumes an adult body weight of 70 kg for residential exposure scenarios. Therefore, the daily dose would be:

Finally, we can calculate the lifetime cancer risk using the formula above:

Therefore, the lifetime cancer risk from exposure to TCDD in drinking water at a concentration of 3 x \(10^{-8}\) mg/L is 1.29 x \(10^{-19}\), a minimal risk.

To learn more about TCDD, refer:-

https://brainly.com/question/18255754

#SPJ4

After two or more atoms lose or receive electrons to create an ion, an ionic bond can occur. Ionic bonds form when metals lose electrons and nonmetals acquire electrons. Ions with opposing charges attract one other, forming an ionic connection.

Ionic bonding is the principal interaction in ionic compounds and includes the electrostatic attraction between oppositely charged ions or between two atoms with drastically differing electronegativities. Ionic bond, also known as electrovalent bond, is a kind of connection generated in a chemical molecule by the electrostatic attraction of oppositely charged ions. When the valence (outermost) electrons of one atom are permanently transferred to another, a bond is formed.

Here,

An ionic link can form when two or more atoms lose or gain electrons to form an ion. When metals lose electrons and nonmetals gain electrons, ionic bonds develop. Ions having opposing charges attract one another, resulting in the formation of an ionic bond.

To know more about ionic bond,

https://brainly.com/question/11527546

#SPJ1

Answer:i need help too

Explanation:

I need help yoo

Answer:

Explanation:

Examples of compounds that contain only covalent bonds are methane (CH4), carbon monoxide (CO), and iodine monobromide (IBr). Covalent bonding between hydrogen atoms: Since each hydrogen atom has one electron, they are able to fill their outermost shells by sharing a pair of electrons through a covalent bond

The compound that is classified as covalent bond is P₂O₅

The correct answer to the question is Option C. P₂O₅

Covalent bond is a type of bond in which there is a sharing of electron(s) between the atoms involved. Compounds formed by this type of bond are called covalent compounds.

Covalent bond exist between non metals only

With the above information in mind, we can conclude that P₂O₅ is a covalent compound as both phosphorus and oxygen are non metals.

The rest options in the question contains metal and non metals.

The correct answer to the question is Option C. P₂O₅

Learn more: https://brainly.com/question/2205671

Answer:

See explanation

Explanation:

If we look at the models, we will see that the three fluorine atoms in CF3COOH are attached to the carbon that is next to the -COOH group.

As a result of the electron withdrawing effect of the three fluorine atoms, CF3COOH  is much more acidic (104 times more acidic) than CH3COOH. This is reflected in the value of the Ka for each acid.

This electron withdrawing effect of the three fluorine atoms also stabilizes CF3COO- much more than CH3COO-.

Answer:

d I think there's two answer

Explanation:

or c

Explanation:

99 is not a prime number because it can be multiplied by itself and by other numbers

99*1

9*11

Answer:

A prime number is a number that can only be divisible by ±itself and ±1

but 99 can  be divisible by  ±3; ±11 => 99 isnt a prime number

Explanation:

Answer:

Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Explanation:

Answer:

The mass per unit volume of a substance is called density of that substance.

Explanation:

So, How does it works ?

For example: Density of gold is 19300kg/cubic meter. It means that if there gold having volume of a cubic meter its mass will be 19300 kg... Density of plastics are less than that of density of metals... I.e. if we take plastic having volume 2 cubic meter & gold having volume 1 cubic meter we will find mass of gold is far more compared to that of plastic.. Thus, density refers how much tightly the molecules of a substance are bonded together.

An aqueous solution contains 0.10 M NaOH. The solution is very dilute. Therefore, the correct option is option A.

Dilution is the act of "simply adding additional solvent to a solution, such as water, to lower the quantity of a particular solute within the solution." In order to dilute a solution, more solvent must be added without increasing solute.

A common method for producing a solution with a certain concentration is to start with a higher concentration and gradually add water until the desired concentration is reached. An aqueous solution contains 0.10 M NaOH. The solution is very dilute.

Therefore, the correct option is option A.

To know more about dilution, here:

https://brainly.com/question/28997625

#SPJ4

Answer:

You can measure the displacement when the object is placed in a certain volume of water.

Answer:oml felt

Explanation:

I'm sorry tho

Answer:

800-273-8255

Explanation:

here is the sui cide hotline number

Answer:

I think it's true

Explanation:

jnwnwnaokajz

The freezing point of a solution is -1.16°C

Calculation,

The equation which give relation between freezing point depletion and molality is,

Δ\(T_{f} = K_{f} .m\)      ... (i)

Moles of the solute = 22.0 g / 114.23 g/mole = 0.193 mole

Mass of the solvent in g = 148 g

Mass of the solvent in kg = 0.148 kg

Molality = 0.193 mole/ 0.148 kg = 1.3 m

Now, after putting the value of  \(K_{f}\) and m in equation (i) we get

Δ\(T_{f} = K_{f} .m\)  

Δ\(T_{f}\)= 5.12°C/m×1.3 m = 6.66°C

Δ\(T_{f}\)=  \(T_{f}\) (solvent) - \(T_{f}\) (solution)

\(T_{f}\) (solution) = \(T_{f}\) (solvent)  -Δ\(T_{f}\)= 5.5 °C - 6.66°C = -1.16°C

The freezing point of a is -1.16°C

To learn about freezing point

https://brainly.com/question/3121416

#SPJ4

Answer:

There are 122.1982401 moles of  H2O in \(7.36*10^{25}\)  molecules of H2O

Explanation:

We know,

\(6.023*10^{23}\)  molecules of H2O contains 1 mole H2O

            1      molecules of H2O contains \(\frac{1}{6.023*10^{23}}\)  mole H2O

∴ \(7.36*10^{25}\) molecules of H2O contains \(\frac{1}{6.023*10^{23}}*(7.36*10^{25})\) moles of H2O

                                                               = 122.1982401 moles of  H2O

∴ There are 122.1982401 moles of  H2O in \(7.36*10^{25}\)  molecules of H2O

Answer:

• Abogado

• Administrador o conservacionista de campo

• Agrícola o agrónomo

• Apiculturísta

• Arquitecto

• Arquitecto ambiental

• Asistente de investigación

• Astrónomo

• Bioquímico

• Científico animal

• Científico avícola

• Científico de suelo

• Consejero vocacional

• Contador

• Criador animal

• Economista

• Entomólogo

• Epidemiólogo

• Farmacólogo

• Físico

• Fitogenetista

• Forestal

• Genetista

• Geoquímico

• Geofísico

• Horticultor

• Ingeniero

• Matemático (incluyendo estadístico)

• Meteorólogo

• Nutriólogo

• Profesor

• Químico

• Silviculturiasta (incluyendo forestalista)

• Terapeuta recreativo

• Topógrafo

• Trabajador social

• Urbanista (incluyendo geógrafo)

• Zoologísta

• Técnico científico de cualquiera de las siguientes disciplinas: ciencias agrícolas, astronomía, biología, química, ingeniería, silvicultura, geología, geofísica, meteorología o física

Explanation:

\(\\ \sf\longmapsto 12579nm\)

\(\\ \sf\longmapsto 12579\times 10^{-9}m\)

\(\\ \sf\longmapsto 1257.9\times 10^{-8}m\)

\(\\ \sf\longmapsto 12.5\times 10^{-6}m\)

\(\\ \sf\longmapsto 12.5\mu m\)

Answer:

1.26e-5

Explanation:

Change 12579 nm to meters first, it becomes 1.2579e-5, then rounding it to 3 significant figures becomes 1.26e-5.

Salt in each of the following groups will the solubility depend on pH  is AgF, AgCl, and AgBr

Solubility depends on the pH of salts in the following groups: Group 1: The solubility of carbonates, hydroxides, and sulfates is a function of pH. Group 2: The solubility of sulfides, hydroxides, and sulfites is a function of pH.Group 3: The solubility of sulfides, carbonates, and hydroxides is a function of pH.Group 4: The solubility of sulfides, hydroxides, and sulfites is a function of pH.Group 5: The solubility of sulfides, hydroxides, and sulfites is a function of pH.Group 6: The solubility of sulfides, carbonates, and hydroxides is a function of pH.

A salt is formed from the reaction of an acid and a base. Salts can be made up of a variety of ions, which can affect their solubility in water. Salts containing anions that can act as weak bases are usually more soluble in acidic solutions than in basic solutions. Salts with anions that can act as strong bases are usually more soluble in basic solutions than in acidic solutions. AgF, AgCl, and AgBr are the salts in each of the groups mentioned above that will have solubility dependent on pH. They contain halide ions, which can act as weak bases. The solubility of these salts in water is thus determined by the pH of the solution.

Learn more about Solubility  at  brainly.com/question/29661360

#SPJ11

Answer:

its actually supposed to be 27 days

The element having that electronic configuration is Cobalt.

Its an element in d - block, having atomic number 27

A chemist wants to make the 5.0 moles of (NH₄)₃PO₄ in the formation of the reaction starting with the constituent elements. The moles of hydrogen gas are needed is 60 moles.

The chemical name of the compound is (NH₄)₃PO₄ is ammonium phosphate.

1 mole of (NH₄)₃PO₄ requires the 12 moles of the hydrogen

1 mole = 6.022 × 10²³ atoms / molecules , this is Avogadro's constant

1 mole of (NH₄)₃PO₄ =  12 moles of the hydrogen

5 moles of (NH₄)₃PO₄ = 5 × 12 moles of the hydrogen

5 moles of (NH₄)₃PO₄ = 60 moles of the hydrogen .

Thus, the moles of hydrogen is 60 moles.

To learn more about (NH₄)₃PO₄ here

https://brainly.com/question/30215790

#SPJ4

Answer:

A. Non-metal

B. Six

C. 2

D.NA2O

E.Oxygen

Explanation:

Oxygen is the element in the second period (second horizontal row) and Group VI A of the periodic table. These properties apply to oxygen

Answer:

huh

Explanation: