What is the final product of the following sequence of reactions? (CH3NCHOH PBr3 Mg diethyl ether 1) L N PCC 2) H3O * CH2Cl2 A) (CH3)2CHOCH2CH2OH. B) (CH3)2CHCCH3C) (CH3)2CHCH2CHO.D) (CH3)2CHCH2CO2H.

Answer:

0.0074 cL

7.4 x 10⁻³ cL

Explanation:

Step 1: Find conversion

1 liter (L) = 100 centiliters (cL)

Step 2: Set up dimensional analysis

[tex]0.74cL(\frac{1L}{100cL} )[/tex]

Step 3: Multiply and cancel out units

cL and cL cancel out.

We are left with L.

0.74/100 = 0.0074 cL or 7.4 x 10⁻³ cL

Answer:

b. has a low specific heat capacity.

Explanation:

Hello,

In this case, since the specific heat is defined as the heat required to increase or decrease 1 degree Celsius 1 gram or mole of a specific substance, we infer that the lower the specific heat, the less energy will be needed for such increase or decrease, therefore, it turns out easier to modify the temperature in a substance that b. has a low specific heat capacity.

Best regards.

Answer:

Here is the full question:

200ml hard water was boiled with 100ml N/50 Na2CO3 reagent. After boilingg the volume was again made to 200mand the solution filtered. 25ml of this filtrate required 8.2ml of N/50 HCl for neutralisation.

Calculate the permanent hardness in ppm.

Explanation:

Remember that the hard water was boiled with 100ml N/50 Na2CO3 reagent. Therefore, the milliequivalent of carbonate ion in 100 ml of N/50 Na2CO3 solution is given as 100 × [tex]\frac{1}{50}[/tex] = 2

The solution was made of 200 ml and 25 ml of the filtrate was neutralised with 8.2 ml N/50 HCl.

The milliequivalent of carbonate ions remaining in the filtrate is [tex]\frac{200}{25}[/tex] × 8.2 × [tex]\frac{1}{50}[/tex] = 1.3 milliequivalent

To get the milliequivalent of carbonate ion precipitated, we need to subtract the milliequivalent of the two carbonate ions. This will give us

2 − 1.3 = 0.7g

The amount of  CaCO3  present  in 200 ml water = 0.7 × 50 = 35g

Permanent hardness = [tex]\frac{35}{200}[/tex] × 1000 = 175 ppm.

Permanent hardness of water after boiling is 175ppm.

Hardness of water is of two types, one those will cam be removed by boiling is known as temporary hardness and which can not be removed by boiling is known as permanent hardness.

Given that hard water is heated with = 100mL N/50 Na₂CO₃.

Milliequivalent of carbonate ion in 100ml of N/50 Na₂CO₃ = 100×1/50=2

The milliequivalent of carbonate ions remaining in the filtrate is  200/25× 8.2 × 1/50 = 1.3 milliequivalent

Milliequivalent of carbonate ion precipitated = 2 - 1.3 = 0.7g

The amount of CaCO₃ present in 200 ml water = 0.7 × 50 = 35g

Permanent hardness will be calculated as:

P.H. = 35/200 × 1000 = 175ppm.

Hence, permanent hardness of water is 175ppm.

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Chemistry is vital in forensic science (used to solve crimes). With chemistry, forensic scientists demonstrate what happened on a molecular level. Chemical analysis can reveal how long ago a person died, what weapon was used, the kind of tape or rope used to tie someone up, etc. They also analyze drugs/controlled substances taken from scenes and people to identify and sometimes quantify these materials.

Answer:

when an acid react with a base, salt and water is produced. It is because the nature of salt formed determines whether the solution is neutral, acidic or basic

Hope this helps :)

Answer:  Chemical

Explanation:

When paper is burned, it creates a chemical change.

Answer:

Explanation:

Hey, there!!

The answer is chemical change.

When the paper is burned it changes into an ash. Which is a chemical change. { as it can't be reversed }.

Hope it helps...

Hello. This question is incomplete. The full question is:

Calculate the potential of the electrochemical cell and determine if it is spontaneous as written at 25 ∘C . Cu(s) || Cu2+(0.14 M) ‖‖ Fe2+(0.0040 M) || Fe(s) E∘Cu2+/Cu=0.339 VE∘Fe2+/Fe=−0.440 V Ecell= V Is the electrochemical cell spontaneous or not spontaneous as written at 25 ∘C ? not spontaneous spontaneous

Answer:

Ecell = -0.825v

Negative results indicate that the electrochemical cell is not spontaneous.

Explanation:

You will find the result by doing the following calculation:

Cu2 + = 0.14M

Fe2 + = 0.0040M

Eº Cu2 + / Cu = 0.339V

Eº Fe2 + / Fe = -0.440V

Electron change ............ n = 2

Cu // Cu2 + (0.14M) // Fe2 + (0.0040M) / Fe (s)

Cu + Fe2 + ----> Fe (s) + Cu2 + (aq)

You should now use the formula =

Eºcell = Eº anode - Eº cathode ------> Eº = Eº (Fe2 + / Fe) - Eº (Cu2 + / Cu)

Eº Cell = -0.440 - 0.339 = -0.779V

E cell = EºCell - (0.0591 / n) log (Cu2 + / Fe2 +)

E cell = -0.779 - (0.0591 / 2) log (0.14 / 0.0040)

Ecell = -0.825

Answer:

Ksp = 8.8x10⁻⁵

Explanation:

Full question is:

After mixing an excess PbCl2 with a fixed amount of water, it is found that the equilibrium concentration of Pb2+ is 2.8 × 10–2 M. What is Ksp for PbCl2?

When an excess of PbCl₂ is added to water, Pb²⁺ and Cl⁻ ions are produced following Ksp equilibrium:

PbCl₂(s) ⇄ Pb²⁺ + 2Cl⁻

Ksp = [Pb²⁺] [Cl⁻]²

If an excess of PbCl₂ was added, an amount of Pb²⁺ is produced (X) and twice Pb²⁺ is produced as Cl⁻ (2X):

Ksp = [X] [2X]²

Ksp = 4X³

As X is the amount of Pb²⁺ = 2.8x10⁻²M:

Ksp = 4(2.8x10⁻²)³

The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess. Together, the number of protons and the number of neutrons determine an element's mass number.

tbh google

hope it helps

Explanation:

The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons.

Answer:

the right side of the periodic table are metals while the left side are non metals (with the exception of hydrogen)

Answer:

[tex]2CH_3OH_{(l)} + 3O_2_{(g)} --> 2CO_2_{(g)} + 4H_2O_{(g)}[/tex]

Explanation:

The reaction between methanol and oxygen can be expressed as an equation below:

[tex]CH_3OH + O_2 --> CO_2 + H_2O_[/tex]

However, the equation is not balanced as the number of the molecule of each atom on the right-hand side and the left-hand side is not the same. The balanced equation showing the phases of all the reactants and products is as below:

[tex]2CH_3OH_{(l)} + 3O_2_{(g)} --> 2CO_2_{(g)} + 4H_2O_{(g)}[/tex]

Two molecules of liquid methanol react with three molecules of oxygen gas to give 2 molecules of carbon dioxide gas and four molecules of water vapor.  

Answer:

A triple bond have two pi bonds.

Explanation:

This is an alkaline that contains one sigma bond and two pi bonds.

Hope my answer helps.

Answer:

Two

Explanation:

Answer:

molecular formula is "SiF4" and compound name is "silicon tetrafluoride"

Explanation:

Answer:

0.1025 g/L

Explanation:

From the question above,

The solubility of oxygen gas in water at 25°c and 1.0 atm pressure is 0.041g/L

Henry's law states at a constant temperature the solubility of a gas is proportional to the pressure

Since the temperatures are both similar (25°c) then, the solubility of oxygen in water at 2.5 atm can be calculated as follows

= 0.041/1.0 × 2.5

= 0.041×2.5

= 0.1025 g/L

Hence the solubility of oxygen in water at 2.5 atm and 25°c is 0.1025 g/L

Answer:

The garden soil become more acidic.

Explanation:

The pH is defined as -log [H⁺]. An acidic solution contains an important amount of [H⁺]. When the pH increases, H⁺ decreases doing the solution more basic. In the other way, an increasing in H⁺ concentration decreases the pH doing the solution more acidic.

The pH of the garden soil of Olivia decreases after it rained. As pH decreases, [H⁺] increases become the garden soil more acidic.

Answer:

The answer is

Explanation:

Since the concentration , mass and molar mass of NaOH has been given we use the formula

To find the volume

where

C is the concentration

m is the mass

M is the molar mass

v is the volume

Making volume the subject we have

From the question

C = 1.25 M

m = 60 g

M = 40.0 g/mol

Substitute the values into the above formula and solve for the volume

We have

We have the final answer as

Hope this helps you

Answer:

[tex]6118.11\frac{in}{min}[/tex]

Explanation:

Hello,

In this case, by knowing that 1 inch equals 2.54 cm and 60 seconds equals 1 min, the resulting value results:

[tex]=259\frac{cm}{s}*\frac{1in}{2.54cm}*\frac{60s}{1min}\\ \\=6118.11\frac{in}{min}[/tex]

Best regards.

For the given reaction increasing the pressure will cause the equilibrium to shift to the left, towards reactants.

According to this law on applying extrenal stress on the equilibrium state of any reaction then it will shift to that side where effect of the stress getting low.

Given chemical reaction is:

2SO₂(g) + O₂(g) → 2SO₃(g) + heat

In the reaction heat is also produced in the forward direction and from the ideal gas equation PV=nRT it is clear that pressure is directly proportional to the temperature. So when we increasing the presssure then temperature will also increase as a result of increase in heat. So minimize this effect reaction will shift to the left side.

Hence reaction will shift to the left side of the equilibrium.

To know more about equilibrium law, visit the below link:

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Answer:

B) 1

Explanation:

Lithium is a univalent element, univalent means that it has only one valence electron. If this is true, then lithium can only provide this one valence electron in a voltaic cell.

From the foregoing, each lithium atom can only provide one valence electron in the voltaic cell.

Answer:

B) 1

Explanation:

I got it in class!

Hope this Helps!! :))

Answer:

1.08 × 10⁻⁵ M

Explanation:

Calculate the solubility of BaCrO₄ in water at 25°C. You'll find data in the ALEKS Data tab. Round your answer to 3 significant digits.

Step 1: Write the reaction for the solution of BaCrO₄

BaCrO₄(s) ⇄ Ba²⁺(aq) + CrO₄²⁻(aq)

Step 2: Make an ICE chart

We can relate the molar solubity (S) with the solubility product constant (Ksp) using an ICE chart. The Ksp for BaCrO₄ is 1.17 × 10⁻¹⁰.

        BaCrO₄(s) ⇄ Ba²⁺(aq) + CrO₄²⁻(aq)

I                               0                  0

C                             +S               +S

E                               S                 S

The solubility product constant is:

Ksp = 1.17 × 10⁻¹⁰ = [Ba²⁺] [CrO₄²⁻] = S²

S = √1.17 × 10⁻¹⁰ = 1.08 × 10⁻⁵ M

Answer:

Mg²⁺(aq) + SO₄²⁻(aq) + 2Na⁺(aq) + 2OH⁻(aq) → Mg²⁺(aq) + 2OH⁻(s) + 2Na⁺(aq) + SO₄²⁻(aq)

Explanation:

The complete ionic equation is the chemical equation where the chemical species in the aqueous phase (aq) are written as ions.

In the reaction:

MgSO₄(aq) + 2NaOH(aq) → Mg(OH)₂(s) + Na₂SO₄(aq)

MgSO₄ dissociates in Mg²⁺ and SO₄²⁻, NaOH in Na⁺ and OH⁻, Mg(OH)₂ doesn't dissociate because is as solid and NaSO₄ dissociates in Na⁺ and SO₄²⁻ ions.

That means the complete ionic equation is:

Answer: the time taken for the radioactivity of a specified isotope to fall to half its original value.

Explanation:

Answer:

Half-life is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo, or how long stable atoms survive, radioactive decay.

Explanation:

hope these help you answer

Answer:

Science is both boon and curse for living beings.

Science is the action to find out any fact regarding the natural world.

Science gives accurate facts, formulas, laws and theories.

Science has many major fields like chemistry, physics, biology etc.

Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards.

Answer:

Hey!

0.8730 / 9.650 = 8.42445

Explanation:

8.42445 TO 2 s.f... (best option for rounding)

= 8.4

ANSWER = 8.4 (2 s.f)

HOPE THIS HELPS!!

Answer:

≅ 50, 909 nm

Explanation:

Wavelength, λ = [tex]\frac{speed}{freq}[/tex]

Given:

speed of light = [tex]3*10^{8} m/s[/tex]

f = 5.89 × [tex]10^{14}[/tex]

∴ λ = 3×[tex]10^{8}[/tex] / 5.89 × [tex]10^{14}[/tex]

= 0.0000509 m ≅ 50, 909 nm

Let me know if you need further assistance

Answer:

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To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number:

number of protons = atomic number.

number of electrons = atomic number.

number of neutrons = mass number - atomic number.

Explanation:

Answer:

$195

Explanation:

Step 1: Given data

Step 2: Calculate the total estimated cost for remodelling the interior of an apartment

We will use the following expression.

C = cC × nC + cB × nB + cH × nH

C = $13.69 × 3 + $9.53 × 2 + $135 × 1

C = $195