Write balanced molecular and net ionic equations for the following metathesis (double displacement) reactions, if they occur. If no reaction occurs, write NR on the product side. All reactants are aqueous. Phase subscripts must be included to indicate what products stay in solution (aq), and what products precipitate (s).
a. zinc acetate + sodium carbonate
b. barium nitrate + sodium sulfate
c. lead (II) nitrate + sodium sulfate
d. zinc acetate + sodium sulfate
e. barium nitrate+ potassium iodide
f. lead (I) nitrate+ potassium iodide
g. zinc acetate + potassium iodide

Answer:

They are more spread out.

Explanation:

The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.

Answer:

Explanation:

Explanation:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles

Answer:

Direct coupling

Explanation:

Direct coupling is sensitive to changes that occurs in temperature. It is electrical energy transfer using physical contact through a medium that is conductive.

It is useful in the interconnection of 2 circuits. This kind of coupling method can be done by a wire, a resistor or through mettalic bonding.

Answer:

✔ Labor Relations Specialist

✔ Compensation and Benefits Manager

✔ Human Resources Assistant

✔ Human Resources Manager

B

D

A

C

Answer:

Helps employees and management negotiate:

✔ Labor Relations Specialist or B.)

Oversees payment of employees:

✔ Compensation and Benefits Manager or D.)

Maintains employee records, such as contact information:

✔ Human Resources Assistant or A.)

Oversees the Human Resources department of a company:

✔ Human Resources Manager or C.)

Answer:

220000 in/min

Explanation:

Step 1: Write out conversions

1 in ≈ 2.54 cm

60 sec = 1 min

Step 2: Set up dimensional analysis

[tex]\frac{933cm}{s} (\frac{60s}{1min} )(\frac{1in}{2.54cm} )[/tex]

Step 3: Evaluate

220039.4 in/min

Step 4: Sig figs

There are 3 sig figs

220039.4 in/min ≈ 220000 in/min

Answer:

Copper(I) chloride, commonly called cuprous chloride, is the lower chloride of copper, with the formula CuCl. The substance is a white solid sparingly soluble in water, but very soluble in concentrated hydrochloric acid. Impure samples appear green due to the presence of copper(II) chloride.

Explanation:

Please mark me brainliest

Answer:

It is no. D

Explanation:

Many meteoroids are formed from the collision of asteroids, which orbit the sun between the paths of Mars and Jupiter in a region called the asteroid belt.

Answer:

Explanation:

In organic chemistry, the reaction between 2-butanol with TsCl and Et3N is known as the tosylation of the alcohol hydroxyl group. Alcohol is being changed to tosylate by the use of tosyl chloride under the influence of a base. Tosylation of alcohol is an example of a nucleophilic substitution reaction. From the image attached below, we will see how the reaction between 2-butanol proceed into the product by using tosyl chloride and a base(Et3N).

Answer:

The concentration of fructose-6-phosphate is 1.50x10⁻³M

Explanation:

Gibbs Free energy, ΔG°, is defined as:

ΔG° = -RTln K

Where ΔG° = 1670J/mol

R is gas constant = 8.314J/molK

T is absolute temperature (25°C + 273.15 = 298.15K)

Thus, equilibrium constant, k, is:

1670J/mol = -8.314J/molK* 298.15K ln K

-0.6737 = ln K

0.5098 = K

K of the reaction:

G6P ⇄ F6P

is:

K = 0.5098 = [F6P] / [G6P]

As [G6P] is 2.95x10⁻³M:

0.5098 = [F6P] / [2.95x10⁻³M]

[F6P] = 1.50x10⁻³M

Answer:

Concentration of H3O⁺  [H3O⁺] = 0.864 M

Explanation:

Given that:

The mass concentration of MO = 43 g/L

The volume of MO = 7.9 mL = 7.9 × 10⁻³ L

Recall that

The mass number of MO = Mass concentration of MO × Volume of MO

The mass number of MO = (43 g/L) * (7.9 × 10⁻³ L)

The mass number of MO =  0.3397 g

number of  moles of MO = (mass number of MO) / (molar mass of MO)

number of  moles of MO = (0.3397 g) / (327.33 g/mol)

moles of MO = 0.00104 mol

The total volume = 7.9 mL + 3.13 mL + 5.49 mL + 3.43 mL

The total volume = 19.95 mL = 19.95 × 10⁻³ L

Concentration of MO [MO} =(number of moles of MO) / (total volume)

[MO] = 0.00104 mol  /  19.95 × 10⁻³ L

[MO] = 5.2130 × 10⁻⁸ M

the number of moles of H3O⁺ = molarity of HCl in the solution × the volume of HCl in solution

the number of moles of H3O⁺ = [(2.0 M) * (3.13 mL)] + [(2.0 M) * (5.49 mL)]

the number of moles of H3O⁺ = 17.24 mmol

Concentration of H3O⁺  [H3O⁺] = (the number of moles of H3O⁺) / (total volume)

Concentration of H3O⁺  [H3O⁺] = (17.24 mmol) / (19.95 mL)

Concentration of H3O⁺  [H3O⁺] = 0.864 M

The Concentration of H3O⁺  [H3O⁺] is 0.864 M

But before that following calculations should be needed.

The mass number of MO = Mass concentration of MO × Volume of MO

= (43 g/L) * (7.9 × 10⁻³ L)

=  0.3397 g

Now

number of  moles of MO = (mass number of MO) / (molar mass of MO)

= (0.3397 g) / (327.33 g/mol)

= 0.00104 mol

Now

The total volume = 7.9 mL + 3.13 mL + 5.49 mL + 3.43 mL

= 19.95 mL

= 19.95 × 10⁻³ L

Now

Concentration of MO [MO} =(number of moles of MO) / (total volume)

= 0.00104 mol  /  19.95 × 10⁻³ L

5.2130 × 10⁻⁸ M

Now

the number of moles of H3O⁺ = molarity of HCl in the solution × the volume of HCl in solution

= [(2.0 M) * (3.13 mL)] + [(2.0 M) * (5.49 mL)]

= 17.24 mmol

Now

Concentration of H3O⁺  [H3O⁺] = (the number of moles of H3O⁺) / (total volume)

= (17.24 mmol) / (19.95 mL)

= 0.864 M

Hence, The Concentration of H3O⁺  [H3O⁺] is 0.864 M

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Answer:

oxygen and Carbon dioxide

Answer:

36.66%

Explanation:

Step 1: Given data

Step 2: Calculate the mass of salt

The mass of the sample is equal to the sum of the masses of the components.

m(sample) = m(iron) + m(sand) + m(salt)

m(salt) = m(sample) - m(iron) - m(sand)

m(salt) = 2.875 g - 0.660 g - 1.161 g

m(salt) = 1.054 g

Step 3: Calculate the percent of salt in the sample

We will use the following expression.

%(salt) = m(salt) / m(sample) × 100%

%(salt) = 1.054 g / 2.875 g × 100% = 36.66%

The percent of salt in the original sample containing only iron, sand, and salt is 36.66%.

Salt is a mineral made up of primarily sodium chloride.

Seawater contains a vast amount of salt.

Given,

The total mass of the sample is 2.875 g

Mass of iron is  0.660 g

Mass of sand is 1.161 g

Step 1: To find the mass of salt

The total mass of the sample = the sum of the masses of the compounds

m(sample) = m(iron) + m(sand) + m(salt)

2.875 g =  0.660 g + 1.161 g + m(salt)

m(salt) = 2.875 g - 0.660 g - 1.161 g

m(salt) = 1.054 g

Step 2: Calculate the percent of salt in the sample

[tex]\%(salt) = \dfrac{m(salt) }{m(sample)} \times 100\%\\\\\\\%(salt) = \dfrac{1.054 g }{2.875 g} \times 100\% = 36.66\%[/tex]

Thus, the percentage of salt in the sample is 36.66%.

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Answer:

Divide by 100

Explanation:

Answer:

Explanation:

% mass of Ethylene glycol =(  mass of ethylene glycol/ mass of solution )x100%

                        =  62.1 g/ (62.1  +  250 )   x 100%

                       = 24.24%

Mass percentage is a term that represents the concentration, basically mass by mass percentage. It tells about the percentage of a component in a whole component. Therefore, the mass % of ethylene glycol is  24.24%.

Mass percentage represents the the percentage of each element that is making a particular compound. Mass percentage does not have any unit as numerator and denominator contains the same unit.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

% mass of Ethylene glycol =(  mass of ethylene glycol/ mass of solution)x100%

% mass of Ethylene glycol =  62.1 g/ (62.1  +  250 )   x 100

                                             = 24.24%

Therefore, the mass % of ethylene glycol is  24.24%.

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Answer:

iconic compounds is your anwser

Answer:

Iconic Compounds

Explanation:

I watched a video about it.

Have a nice Friday!

Answer:

The full form of TLC is Thin layer chromatography which is used in separating non volatile mixtures.

Explanation:

In the context, the Rf values could not be read properly or determined properly and accurately if the solvent front flows to the top of the plate. If the solvent reaches the plate's top, then the Rf values reading will be different from the TLC plate where the solvent did not reach the plate's top.

If the solvent front reaches the top, then it is not possible to accurately determine draw the line and to determine how far the spot went. And thus it would be difficult to solve the ratio as the plate would keep advancing or developing and also the compound spot keeps rising. As a result, spots reaches higher or rises than the normal rise but the solvent front does not change, it remains same. Thus, the Rf value would be completely off.

Two or more than two atoms with different physical or chemical properties can not combine together to form an element.  Energy is the only factor that  determines the color of light of fireworks.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

Fireworks has many different types of element. When any element is given an energy. Then the process of excitation of electrons takes place from its outermost shells. Every element absorb characteristic wavelength of energy and releases light to the corresponding wavelength.

Therefore, energy is the only factor that  determines the color of light of fireworks.

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Answer:0.005

Explanation:kilo means 1000 do you divide 5 by 1000 and you get.005

Answer: 0.005 kilolitres

Explanation:

5 liters = 0.005 kilolitres

Why? Because liters - kilolitres:  ÷ 1000

Answer:

the substance is element.

because an element is pure substance which is made of only one kind of atom.

Answer:

The strength of a bond between two atoms increases as the number of electron pairs in the bond increases.

Explanation:

Answer:

No matter where that object is in the vast universe, it will have the same mass. Weight, on the other hand, is a measure of how much gravitational force is exerted on an object.

The answer is d volume. This is because the melting point, color, temperature are all intensive properties. While hardness is neither extensive or intensive. Volume is the only one that is considered an extensive property.

I hope this helps ! <3

Answer: volume

explanation:

Answer:

B. Fluids

I hope this helps!

Answer:

B

Explanation:

Answer:

well ,if I have done my sum rights there are

14 atom in the one formula unit of aluminium carbonate.

Answer:

14 atoms

Explanation:

Answer:

s, p

Explanation:

The four parts, or orbitals, on the periodic table are s, p, d, and f.

The graphs which use axes both labeled with quantitative values and show individual points of data include:

Thus is defined as a pictorial representation of data or variables in an organized or definite manner.

The graphs mentioned above always have each point matching with one value on the x-axis and one value on the y-axis.

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Answer:

halving the volume of a gas

Explanation:

Entropy refers to the degree of disorderliness of a system. The greater the volume of a gas, the greater its entropy. The entropy of a system is directly proportional to its volume.

Hence a decrease in the volume of a gas leads to a decrease in its entropy. Ultimately, if the volume of a given mass of gas is halved, its entropy decreases according.

Answer:

it is a viral disease . it is infected by one person to other .