Convert 1.53 mol NaCl to moles of CaCl2, using the equation given below. Round to the nearest 0.01, and remember to include units (properly abbreviated) and substance in your answer!

Na3PO4 + CaCl2 --> Ca3(PO4)2 + NaCl

On the periodic table, argon has an average atomic weight of 39.948 amu. This number is really near 40. This suggests that Ar-40 is the isotope of argon (Ar) that is most prevalent in the natural world.

If all three argon atoms are neutral, they would each contain 18 protons and 18 electrons. In comparison to one another, the three isotopes will each have a distinct number of neutrons (18, 20, and 22 neutrons respectively).

Atomic number, not atomic mass, is used to categorise the elements. As the atomic number of argon (18) is less than that of potassium (19)

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The volume of 8.8g of carbon dioxide at STP is 4.38 L.

1 mole of any gas will take up 22.4 L of space at standard temperature and pressure (STP). A balanced chemical equation and the Ideal Gas Law can be used to determine the amount or mass of gas consumed or created in a chemical process.

n = m/M

where m is the molar mass of carbon dioxide and M is its mass in terms of molecules.

Considering that the molar mass of carbon dioxide is 44.01 g/mol:

n = 8.8 g / 44.01 g/mol

n = 0.1998 mol

Next, we can plug in the values of n, R, P, and T into the ideal gas law and solve for V:

V = (nRT)/P

V = (0.1998 mol x 0.0821 L·atm/(mol·K) x 273.15 K) / 1 atm

V = 4.38 L

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A full Moon chances roughly every 29.5 days, so it may be possible the next full moon likely to appear in the night sky of Earth on July 29, hence the option B is correct.

The lunar phase during which the Moon is completely lit from Earth's viewpoint is known as the full moon.

When Earth is situated halfway between the Sun and the Moon, this happens. This indicates that the near side of the moon, which faces Earth, is fully illuminated by the sun and appears as a roughly round disc.

A full Moon chances roughly every 29.5 days, so it may be possible the next full moon likely to appear in the night sky on July 29.

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Answer:

Graph? Question is incomplete.

Answer:

Because it only needs one more electron to get to a full valence shell (8), so it really wants it and is pulling other electrons in. It also has to do with needing one more electron to fill the 2p shell. It is a small element which means its electrons are pulled tightly to the nucleus.

Hope this helps!

Explanation:

Answer:

1. B

2. E

3. A

4. D

5. C

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hope I helped!!!

GL :)

Answer:

the process or result of oxidizing or being oxidized

Answer:Sexual reproduction can be described as the method of reproduction in which the offsprings produced will have half the chromosomes as compared to the parent cell. The other half of the chromosomes to make a complete set would arise from the other parent. In this way, the offspring produced will carry half of the chromosomes from the female parent and half from the male parent.

Crossing over and independent assortment are two phenomenons of meiosis due to which genetic diversity occurs and the offsprings born are not exactly similar to the parent cell.

Explanation:

All possible types of intermolecular forces that can form between particles of :

(a) CS2: London dispersion forces

(b) CH2Br2: Dipole-dipole interaction and H-bonding

What are intermolecular forces?

Intermolecular forces, frequently abbreviated to IMF, are the appealing and repulsive forces that stand up among the molecules of a substance. These forces mediate the interactions among man or woman molecules of a substance. Forces additionally exist among the molecules themselves and those are together called intermolecular forces. Intermolecular forces are specifically answerable for the bodily traits of the substance. There are 5 varieties of intermolecular forces. They are as follows-

Thus, al the types of intermolecular forces possible between particles of :

(a) CS2: London dispersion forces

(b) CH2Br2: Dipole-dipole interaction and H-bonding

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Option A, In the polysaccharide cellulose, large numbers of monosaccharides are linked together through glycosidic linkages.

The most prevalent carbohydrates in nature are polysaccharides, which have several uses including energy storage and inclusion in plant cell walls. Large polymers known as polysaccharides are created by joining tens to thousands of monosaccharides together via glycosidic connections. Starch, glycogen, and cellulose are the three polysaccharides that are most prevalent. Because each of these three produces only one kind of monosaccharide (glucose) after full hydrolysis, they are collectively known as homopolymers. In addition to monosaccharides, heteropolymers may also contain sugar acids, amino sugars, or noncarbohydrate compounds. Non-reducing carbohydrates known as polysaccharides lack the sweetness and do not mutate.

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Question :

Where do most fungi thrive ?

Answer :

Fungi are found all around the world and grow in a wide range of habitats, including deserts. Most grow on land (terrestrial) environments, but several species live only in aquatic habitats. Most fungi live in either soil or dead matter, and many are symbionts of plants, animals, or other fungi.

Source :

CK-12 , Edgenuity2020

Answer:

As the block slides down, the block descends and that results in a decrease of gravitational potential energy. Kinetic energy will also increase as the block slides down but will stop when it hits the ground off the ramp.

As the block rolls down, the gravitational potential energy  is decreased because it is converted to kinetic energy.

The gravitational potential energy is the energy that is possesed by a body by virtue of its position.

Now when the block starts rolling down, the  gravitational potential energy  decreases as it is converted to the kinetic energy of the moving block.

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The racemic mixture that will be formed after the reaction of when  conjugated diene will react with one equivalent of HBr 1,3-cyclohexadiene.

The reaction is shown in the fig . below .
Here  structure of the conjugated diene will react with one equivalent of HBr to yield a racemic mixture of 3-bromocyclohexene is 1,3-cyclohexadiene.


Therefore , the racemic mixture that will be formed after the reaction of when conjugated diene will react with one equivalent of HBr 1,3-cyclohexadiene.

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Answer:

The correct answers are:

a) 180 g

b) 93.7 cm³

Explanation:

The density of a substance is the mass of the substance per unit of volume. So, it is calculated as follows:

density= mass/volume

From the data provided in the problem:

density = 0.8 g/cm³

a) Given: volume= 225 cm³

mass= density x volume = 0.8 g/cm³ x 225 cm³ = 180 g

b) Given: mass= 75.0 g

volume = mass/density = 75.0 g/(0.8 g/cm³)= 93.75 cm³≅ 93.7 cm³

Taking into account the definition of density:

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

\(density=\frac{mass}{volume} \)

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

In this case, you know that:

Replacing in the definition of density:

\(0.8 \frac{g}{cm^{3} } =\frac{mass}{225 cm^{3} } \)

Solving:

mass= 0.8 \(\frac{g}{cm^{3} } \) ×225 cm³

mass= 180 g

In summary, the mass of 225 cm³ of ethanol is 180 g.

In this case, you know that:

Replacing in the definition of density:

\(0.8 \frac{g}{cm^{3} } =\frac{75 g}{volume} \)

Solving:

0.8 \(\frac{g}{cm^{3} } \) ×volume= 75 g

volume= 75 g÷ 0.8 \(\frac{g}{cm^{3} } \)

volume= 93.75 cm³

Finally, the volume of 75.0 g of ethanol is 93.75 cm³.

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Binary molecular compounds are compounds that consist of exactly two nonmetal elements.

Therefore, the correct statements are:

The name of the first element remains unchanged, except for the addition of a prefix where appropriate.

The second element is named with its root and the suffix -ide.

If only one atom of an element is present, the prefix mono- is not always used.

To name a binary molecular compound, there are a few rules to follow:

The first element in the formula retains its name and is written first in the name of the compound.

The second element in the formula is named using its root and the suffix -ide.

If more than one atom of an element is present, a prefix is used to indicate the number of atoms. The prefixes are mono-, di-, tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, and deca-.

The prefix is not used for the first element, only for the second element.

The prefix mono- is not used for the first element, even if there is only one atom of that element present.

The following statements are incorrect:

The element with the higher group number is first in the formula and name. This applies to ionic compounds, not molecular compounds.

A Greek numerical prefix is used to indicate the number of atoms of each element in the compound. The prefixes used are not Greek, but the ones mentioned above

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Explanation:

A chemical change in a changes that leads to formation new product or chemical substance having new qualities both physical and chemical.

Therefore, chemical changes can be

1. Gas Production

2. Substances Dissolve to form new substance or solution.

3. Heat is Released is a chemical change.

4. Bubbling occurs.

Rest all are examples of physical changes.

Answer:

A

not sure of answer ndhfhfjfjcjfjfj

The mass of nitrogen gas in the sample is 0.001355 g and the number of molecules of nitrogen gas in the sample is 2.91 x 10¹⁹ molecules.

At STP (Standard Temperature and Pressure), the temperature is 0°C (273.15 K) and the pressure is 1 atm (101.325 kPa).

Ideal gas law is: PV = nRT

Where P will be the pressure, V will be the volume, n is number of moles, R is the ideal gas constant, and T will be the temperature.

At STP, the value of R is 0.0821 L·atm/mol·K.

The volume of the nitrogen gas sample is 1120 cm³, which is equivalent to 0.00112 m³.

Using the ideal gas law;

n = PV/RT

n = (1 atm) x (0.00112 m³) / (0.0821 L·atm/mol·K x 273.15 K)

n = 0.0000483 moles of nitrogen gas

To calculate the mass of nitrogen gas, we use the molar mass of nitrogen, which is 28.02 g/mol.

Mass of nitrogen gas = n x molar mass

Mass of nitrogen gas = 0.0000483 moles x 28.02 g/mol

Mass of nitrogen gas = 0.001355 g

To calculate the number of molecules of nitrogen gas in the sample, we use Avogadro's number, which is 6.022 x 10²³ molecules/mol.

Number of molecules of nitrogen gas = n x Avogadro's number

Number of molecules of nitrogen gas = 0.0000483 moles x 6.022 x 10²³ molecules/mol

Number of molecules of nitrogen gas = 2.91 x 10¹⁹ molecules

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Answer:

its B

Explanation:

this is pretty obvious since I know about this and did it already.

I Hope this helps!

GOODLUCK!!!!!!!

I don't know why not

Effects of carbon monoxide partial pressures on the synthesis of medium chain fatty acids and methanogenesis during the fermentation of ethanol is to sustained electron and carbon donor for fatty acid elongation.

What is methanogenesis?

Methane is the end product of metabolism and is produced by methanogenesis, an anaerobic respiration. Organic matter, such as glucose, is oxidized to CO2 in aerobic respiration, and O2 is reduced to H2O. H2 is oxidized to H+ while CO2 is converted to CH4 during hydrogenotrophic methanogenesis, in contrast.

The major goal of this research was to ascertain whether increasing the formation of acetate or MCFA during the fermentation of ethanol would result from inhibiting methanogenesis by adding CO continuously.

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Answer:

pH → 1.83

Explanation:

Let's write the lactic acid as HLac, because it is a monoprotic weak acid.

HLac + H₂O  ⇄  H₃O⁺  +  Lac⁻      Ka

Initially we have 0.25 moles, so x amount has reacted. At the end, when the equilibrium is finished, we may have (0.25 - x) moles of acid, x moles of protons have been released and x moles of lactate were formed.

In order to find x, we use the acid constant, Ka. The expression for Ka is:

Ka = [H₃O⁺] .  [Lac⁻] / [HLac]

8.3×10⁻⁴  = x² / (0.25-x)

8.3×10⁻⁴ (0.25 - x) = x²

8.3×10⁻⁴ . 0.25 - 8.3×10⁻⁴x - x² → this is a quadractic function

a = -1,  b = 8.3×10⁻⁴, c = 2.07×10⁻⁴

We solve: (-b - √(b² - 4ac) / (2a)

(-8.3×10⁻⁴ - (√ ((8.3×10⁻⁴)² - 4 (-1) (2.07×10⁻⁴) ) / (2 . -1) = 0.0148

[H₃O⁺] = 0.0148 M

- log [H₃O⁺] = pH → - log 0.0148 = 1.83

The pH is defined as the power of Hydrogen. The pH of a 0.25 M solution of lactic acid is 1.83.

\(\bold { CH_3COOH \rightarrow CH_3 COO + H^+\ \ \ \ \ \ \ \ \ \ \ \ (Ka = 8.3 x 10 -4 ).}\)

Initial concentration of lactic acid is 0.25 M,  So, \(x\). At the end of equilibrium \(x\) amount of lactic acid dissociates.

So, concentration of the Hydrogen ion in the (0.25 - \(x\))  

\(x\) can be found out by using the dissociation constant formula,

\(\bold {Ka = \dfrac {[H^+][CH_3COO^-]}{[Ch_3COOH]}}\\\)

\(\bold {8.3x10^-^4= \dfrac {[x][x]}{[2.5- x]}}\\\\\bold {8.3x10^-^4= \dfrac {[x^2]}{[2.5- x]}}\\\\\bold {x^2= 8.3x10^-^4\times [2.5- x]}}\\\\\bold {8.3x10^-^4 \times 0.25 - 8.3x10^-^4 x - x^2 = 0}\)      

The equation above is a quadratic equation, solving it we get,

The concentration of protons = 0.0148 M

Put this into the pH formula,

\(\bold {pH = -log [H^+]}\)

\(\bold {pH = -log [ 0.0148]}\\\\\bold {pH = 1.83}\)

Therefore, the pH of a 0.25 M solution of lactic acid is 1.83.

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Answer:

cow female

Explanation:

Answer:

? I am confused. What is the question?

Explanation:

The molarity of the \(H_2O_2\) solution is 5.885 M.

To calculate the molarity of a solution, we need to know the number of moles of solute (in this case, H2O2) per liter of solution.

First, we need to determine the density of the solution. Since the percentage by mass is given, we can assume that 100 g of solution contains 20 g of H2O2 and 80 g of water. The density of water is 1 g/mL, so the volume of water in 100 g of solution is 80 mL. The total volume of the solution is therefore 100 mL or 0.1 L.

Next, we need to determine the number of moles of H2O2 in 20 g. The molar mass of H2O2 is 34.0147 g/mol, so 20 g of H2O2 is equal to 20/34.0147 = 0.5885 mol.

Finally, we can calculate the molarity of the solution by dividing the number of moles of H2O2 by the total volume of the solution in liters:

Molarity = 0.5885 mol / 0.1 L = 5.885 M

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The pH of the solution is 10.98 at 25°C.

When Sr(OH)2 is dissolved in water, it dissociates to form Sr2+ and 2OH- ions. The concentration of each ion in the resulting solution can be calculated using the initial amount of Sr(OH)2 and the volume of the solution.

First, we need to determine the concentration of Sr2+ and OH- ions in the solution. Since each Sr(OH)2 molecule dissociates into two OH- ions and one Sr2+ ion, the concentration of Sr2+ in the solution will be half of the concentration of OH- ions.

The initial amount of Sr(OH)2 in the solution is:

moles = 1.3×10^-6 mol

The volume of the solution is:

volume = 25.0 ml = 0.0250 L

Using this information, we can calculate the concentration of OH- ions:

[OH-] = 2 × moles / volume

     = 2 × 1.3×10^-6 mol / 0.0250 L

     = 1.04 × 10^-4 M

Since the concentration of Sr2+ ions is half that of OH- ions, we have:

[Sr2+] = 0.5 × [OH-]

     = 0.5 × 1.04 × 10^-4 M

     = 5.20 × 10^-5 M

Now, we can use the ion product constant for water (Kw) to calculate the pH of the solution:

Kw = [H+][OH-]

  = 1.0 × 10^-14 at 25°C

At 25°C, Kw = 1.0 × 10^-14, so:

pH = -log[H+]

  = -log(Kw/[OH-])

  = -log(1.0 × 10^-14 / 1.04 × 10^-4)

  = 10.98

Therefore, the pH of the solution is 10.98 at 25°C.

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Answer:

What are the answer choices

Explanation:

Answer:

The answer choices are

Explanation:

A. The ocean plants cause more weathering.

B. More algae grows and competes for resources.

C. the slow water causes more erosion.

D. Less sediment is deposited in the soil.

But the answer is (D. Less sediment is deposited in the soil.)

Answer:

0.1 and 0.2.

Explanation:

The person's blood is 0.1 decreases and become more acidic if it has a pH of 7.3 compared to its preferred 7.4 while on the other hand, the person's blood is 0.2 increases and become more alkaline it has a pH of 7.6rather than its preferred 7.4. There is 0.1 decrease and 0.2 increase in the pH of the person's blood. If the pH decreases so it means it moves towards more acidic whereas, if the pH increases there is moves towards alkaline.

Answer:

\( \huge{5.77 \times {10}^{ - 5} m}\)

Explanation:

The wavelength of a wave can be found by using the formula

\(\lambda = \frac{c}{f} \\\)

where

c is the speed of the wave

f is the frequency

From the question we have

\( \lambda = \frac{3 \times {10}^{8} }{5.2 \times {10}^{ 12} } \\ \\ \\ \\ \large{ = 5.77 \times {10}^{ - 5} m}\)

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