Calculate each of the following quantities:
(b) Mass (kg) of 3.58 mol of CuCl₂ . 2H₂O

Answer: hi theree, the answer is c. the processes of endocytosis and exocytosis occur here

hope this helps, have a good day :)

Explanation:

Answer:

C. The processes of endocytosis and exocytosis occur here

Explanation:

I just took the k12 test

Answer:

1, 1, 2

Explanation:

You need to have the same amount of atoms of everything element on both the products and reactants side

Reactants:

Na=2

O=2

H=2

Products:

Na=2

O=2

H=2

The order of DECREASING electronegativity is Se > As > Sn. The order of DECREASING electronegativity is Ru > Hf > Xe. The order of DECREASING electronegativity is N >  Sb > He.

A functional group or an atom's propensity to draw electrons to itself is referred to as its "electronegativity," which is a chemical attribute. Both the atomic number and the separation between the valence electrons and the charged nuclei have an impact on an atom's electronegativity.

What causes an increase in electronegativity?

As you traverse a period in the periodic table from left to right, the electronegativity of atoms rises. The reason for this is that when you move from left to right across a period, the nuclear charge rises faster than the electron shielding, increasing the atoms' attraction to the valence electrons.

To know more about shielding effect, visit

https://brainly.com/question/19068425

#SPJ1

Answer: The kinetic energy of solids is limited to vibrational energies..the particles are tightly bound in their crystalline structure and can only bend, flex, and vibrate about relatively fixed position.  When vibrational energies exceed the strength of the force holding the particles together, the crystal structure collapses and we say the material melted.  The particles can now have, in addition to its vibrational energies, rotational energy.  Chunks of the collapsed crystal can, like a ball floating in water, rotate without showing much translational energy. Generally, we associate solids with vibrational kinetic energy, liquids with rotational kinetic energy, and gases with translational kinetic energy. Actually though, liquids have both vibrational and rotational energies, and gases have all three.

Explanation:

by adding 273.15K to the given value of temperature in Celsius degree.

example:

20℃ to Kelvin

\(T(K)=20℃+273.15K \\

=293.15K \)

The positive charge on proteins in electrospray ionization mass spectrometry (ESI-MS) is primarily the result of protonation of specific side chains of amino acid residues. Among the options provided, the correct answer is C) protonated side chains of Arg and Lys residues.

ESI-MS is a widely used technique for analyzing proteins and other biomolecules. In this method, a sample containing proteins is ionized and introduced into the gas phase, where it is then subjected to mass spectrometry analysis. The goal is to determine the mass-to-charge ratio (m/z) of the ions generated, which provides valuable information about the protein's structure, composition, and modifications.

During the ESI process, the protein sample is first dissolved in a volatile solvent, such as a mixture of water and organic solvent. This solution is then sprayed into an electric field, where it undergoes desolvation and ionization. The charged species formed are then separated based on their m/z ratios and detected by the mass spectrometer.

The positive charge on the proteins in ESI-MS is typically introduced by protonation, which involves the addition of a proton (H+) to the protein molecule. The most common sources of protons in ESI-MS are the acid present in the solvent or the solvent itself. When the protein is exposed to the ionizing conditions, the positively charged protons interact with certain amino acid residues in the protein, leading to their protonation and subsequent formation of positively charged ions.

In proteins, the amino acid residues Arginine (Arg) and Lysine (Lys) contain positively charged side chains at physiological pH. These side chains can readily accept a proton, resulting in the protonation of the protein and the generation of positively charged ions. Therefore, the protonated side chains of Arg and Lys residues are primarily responsible for the positive charge observed on proteins in ESI-MS.

It's important to note that other factors, such as the presence of basic amino acids and the pH of the solution, can also influence the overall charge state of the protein ions observed in ESI-MS. However, the protonation of Arg and Lys side chains is the main contributor to the positive charge in this analytical technique.

Learn more about Protonation :

https://brainly.com/question/30427087

#SPJ11

The statement "molecules move in random directions when heated in a heat engine, and because of the lack of uniformity in the direction of molecular movement" is true.

When a heat engine is heated, molecules absorb heat energy and their kinetic energy increases. The kinetic energy of molecules causes them to move around. However, this movement is not uniform, and the molecules move in random directions.

A heat engine is a device that converts thermal energy into mechanical energy. Heat engines operate on the principle of thermodynamics.

They work by taking in thermal energy from a high-temperature reservoir, converting some of it into mechanical energy, and then releasing the remaining thermal energy to a low-temperature reservoir.The internal combustion engine in a car, the steam engine in an old locomotive, and the turbine in a power plant are all examples of heat engines. They all convert heat energy into mechanical energy to perform work.

To learn more about engine visit;

https://brainly.com/question/31140236

#SPJ11

The balanced equations for the combustion are:

Combustion of B2H6 : B2H6(g) + 3O2(g) → B2O3(s) + 3H2O(g) Combustion of Si4O10 : Si4O10(g) + 13O2(g) → SiO2(s) + 10H2O(g)

A fuel (the reductant) and an oxidant, typically atmospheric oxygen, undergo a high-temperature exothermic redox chemical reaction that results in oxidized, frequently gaseous products and a mixture known as smoke. Since a flame only appears when substances undergoing combustion evaporate, combustion does not always result in fire, but when it does, a flame is a distinctive sign of the event.

Fuel combustion reactions release usable thermal energy as they occur (heat). Most of the cars we drive are powered by combustion reactions, and a large portion of our electricity is produced by them as well.

Learn more about Combustion here: https://brainly.com/question/15117038

#SPJ4

The standard enthalpy of reaction for a system in which increasing the temperature by 15 K reduces the equilibrium constant by half, relative to its value at 310 K is -0.956 kJ/mol.

Given: ΔT = 15 K and ∆K/K = 1/2

Temperature is directly proportional to equilibrium constant K,

So, ∆T/T = ∆K/K

This can be written as ∆K/K = ΔH°/R × (1/T2 − 1/T1)

On solving this equation, we getΔH° = −2.303 × R × ΔK/K × T2T2 = 310 + 15 = 325 K∆K/K = 1/2∆H° = −2.303 × 8.314 J mol−1 K−1 × 1/2 × 325 K∆H° = −955.7 J mol−1= −0.956 kJ/mol

Therefore, the standard enthalpy of reaction for a system in which increasing the temperature by 15 K reduces the equilibrium constant by half, relative to its value at 310 K is -0.956 kJ/mol.

Learn more about enthalpy with the given link,

https://brainly.com/question/14047927

#SPJ11

Answer:

The correct answer is 24.31 amu.

Explanation:

The formula for finding the average atomic mass = The sum of the percentage abundance of isotopes × the actual mass of isotopes

The average atomic mass = % abundance of Mg-24 × actual mass + % abundance of Mg-25 × its actual mass + % abundance of Mg-26 × its actual mass

Avg. Atomic mass = 0.7870 × 23.98504 + 0.1013 × 24.98584 + 0.1117 × 25.98259

Avg. atomic mass = 18.88 + 2.53 + 2.90 = 24.31 amu

The atomic mass of magnesium is 24.31 amu.

If the solution contains 120.0 g of naoh and has a volume of 6000 ml, the molarity of the solution is 0.50 mol/L.

Molarity is defined as the number of moles of solute per liter of solution. To determine the molarity of a solution, we need to first find the number of moles of the solute, which can be calculated using the formula:

moles = mass/molar mass

For sodium hydroxide (NaOH), the molar mass is 40.00 g/mol (22.99 g/mol for Na, 15.99 g/mol for O, and 1.01 g/mol for H).

Using the given mass of NaOH, we can calculate the number of moles:

moles = 120.0 g / 40.00 g/mol = 3.00 mol

Next, we need to convert the volume of the solution from milliliters to liters:

volume = 6000 ml / 1000 ml/L = 6.00 L

Finally, we can use the equation for molarity:

Molarity = moles / volume

Molarity = 3.00 mol / 6.00 L = 0.50 mol/L

To learn more about molarity click on,

https://brainly.com/question/32079676

#SPJ4

Answer: E

Explanation:

Answer:

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.

Answer:

Canda China  Texas new jersey

Explanation:

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

When a drug is administered as a salt, it is typically combined with an appropriate counterion to form a salt form of the drug. This salt form enhances the solubility of the drug in aqueous solutions, which can improve its bioavailability and allow for better dissolution and absorption in the body.

The correct answer is Many drugs are administered as salts rather than as the corresponding neutral compounds because salts often have greater water solubility and stability. This is important for effective delivery and absorption of the drug in the body. Furthermore, salts often provide improved stability compared to the corresponding neutral compounds. The addition of counterions in the salt form can enhance the chemical and physical stability of the drug molecule, protecting it from degradation or hydrolysis.

Learn more about hydrolysis here ;

https://brainly.com/question/31132313

#SPJ11

Answer:

Explanation:

The water cycle the water move through Earth's spheres.Water moves through the hydrosphere in a cycle. Water collects in clouds, then falls to Earth in the form of rain or snow. This water collects in rivers, lakes and oceans. Then it evaporates into the atmosphere to start the cycle all over again.

Explanation:

By the water cycle

The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.

A gas has a mass of 3.82 g and occupies a volume of 0.854 l. the temperature in the laboratory is 302 k, and the air pressure is 1.04 atm, the molar mass of the gas is: 107 g/mol.

A gas has a mass of 3.82 g and occupies a volume of 0.854 L,
while the temperature in the laboratory is 302 K and the air pressure is 1.04 atm.

We will now calculate the molar mass of the gas using the following formula: PVM = mRT
where, P represents the pressure in atm, V is the volume in litres, n is the number of moles, R is the gas constant which is 0.0821 L-atm/mol-K, and T is the temperature in Kelvin.
P = 1.04 atm, V = 0.854 L, T = 302 K and we have to find n which is the number of moles of the gas.

Rearranging the equation to solve for n gives:n = PV/RT
Putting values we getn = (1.04 atm)(0.854 L) / (0.0821 L-atm/mol-K) (302 K)n = 0.0336 mol
The molar mass of the gas is calculated using the following formula: molar mass = mass of the gas / number of moles
molar mass = 3.82 g / 0.0336 mol
molar mass = 113.69 g/mol
Thus, the molar mass of the gas is 107 g/mol (rounded to one decimal place).

To know more about "Molar mass" refer here:

https://brainly.com/question/20552052#

#SPJ11

The correct option from the given statements concerning mixtures is (d) more than one correct response.

The statement (a) "The composition of a homogeneous mixture cannot vary" is incorrect as the composition of a homogeneous mixture can vary. For example, a mixture of salt and water is homogeneous and its composition can vary depending on the amount of salt and water mixed in it.

The statement (b) "A homogeneous mixture can have components present in two physical states" is correct. Homogeneous mixtures are mixtures that are uniform throughout their composition, meaning that there is no visible difference between the components of the mixture. For example, a mixture of ethanol and water is homogeneous and its components are present in two physical states (liquid and liquid).

The statement (c) "A heterogeneous mixture containing only one phase is an impossibility" is incorrect. A heterogeneous mixture is a mixture where the components are not evenly distributed and the mixture has different visible regions or phases. However, it is possible for a heterogeneous mixture to contain only one phase. For example, a mixture of oil and water is heterogeneous but can have only one phase.

To know more about homogeneous visit:

https://brainly.com/question/30587533

#SPJ11

The molecular formula of the compound which has a molecular weight of 112.124 atomic mass units is C₆H₈O₂.

Molecular formula of any compound tells about the composition and numbers of each entities present in that molecule.

Steps involved in the prediction of molecular formula:

      Molar mass of C₃H₄O = 3(12) + 4(1) + 16 = 56

        112.124/56 = 2

        Molecular formula = (C₃H₄O)₂ = C₆H₈O₂

Hence correct option is (E).

To know more about molecular formula, visit the below link:
https://brainly.com/question/26388921

The amount of heat energy needed to cause this rise in temperature=13.794 kJ

Weight m = 100 g

T = 37 - 4 = 33 C is the temperature difference.

Specific heat is 4.18 J per g of carbon.

We must discover heat energy. The following is what we know:

Q = m c  Δ T

Putting values here we get :

Q = ( 100 × 4.18 × 33 ) J

= > Q = ( 418 × 33 ) J

= > Q = 13794 J

= > Q = 13.794 kJ

Specific heat capacity (symbol: c) in SI units is the quantity of heat in joules needed to elevate 1 gram of a substance by 1 Kelvin. J/kgK is another way to put it. Specific heat capacity can also be expressed in terms of calories per gram of temperature change.

To know more about Specific heat visit:-

https://brainly.com/question/11297584

#SPJ1

Answer:

1.717

Explanation:

Expressing the answer in exponential form we get 3⁴.

To simplify the expression (3⁷/(3³), we can apply the properties of exponents. When dividing two exponential expressions with the same base, we subtract the exponents.

In this case, we have 3⁷ divided by 3³, which can be simplified as:

3⁽⁷⁻³⁾

3⁴

Therefore, the simplified expression is 3⁴.

To understand why we subtract the exponents when dividing, we can break down the steps.

The expression 3⁷ represents 3 multiplied by itself seven times:

3 × 3 × 3 × 3 × 3 × 3 × 3.

The expression 3³ represents 3 multiplied by itself three times:

3 × 3 × 3.

When dividing these two expressions, we can cancel out common factors by subtracting the exponents:

(3 × 3 × 3 × 3 × 3 × 3 × 3) / (3 × 3 × 3)

This simplifies to:

3 × 3 × 3 × 3

Which is equivalent to 3⁴.

Thus, the answer in exponential form is 3⁴

Learn more about properties -

brainly.com/question/29547278

#SPJ11

Answer: Nobel Gasses

Explanation:

Answer:

Plants consume carbon dioxide and release oxygen.

Answer: Photosynthesis

Animals consume oxygen and release carbon dioxide.

Answer: Respiration

Answer:

Green vitriol- FeSO4·7H2O

white vitriol- ZnSO₄

Answer:

They breathe

Explanation:

Answer:

Answer:

Heat is released when they are both mixed together.

Explanation:

Explanation

NH4Cl(s) = NH4+(aq) + Cl-(aq) AH = +3.5 kcal/mole

We have some changes that shift the equilibrium to the right, according to Le Châtelier's principle.

I will write some of them:

By Adding amount of NH4Cl or by increasing the temperature because according to the heat of the reaction this is an endothermic reaction.

Answer: Increasing the temperature of the system.