In an experiment, 20cm^3 of 0.2dm^3 NaOH reacted with 32.0cm^3 of H2SO4 solution. Calculate the concentration of the H2SO4 in a) mol dm^-3 and b) g dm^-3​

The copper itself can react with hydrogen

Here is the chemical reaction

2CuCl2(aq) + H2(g) -> 2CuCl(s) + 2HCl(g)

Answer: D)

• Take out the ice and stir it up outside where it is warmer.

Explanation:

Answer:

thank you! I made it to an 100% on USA test prep...

the answer is: Take out the ice and stir it up outside where it is warmer.

Explanation:

I have a lot of rain last night when I go to bed. Stay safe!

Answer: 15.0 g of [tex]CCl_4[/tex] will be formed upon the complete reaction of 27.7 grams of chlorine gas with excess carbon disulfide

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} Cl_2=\frac{27.7g}{71g/mol}=0.390moles[/tex]

The balanced chemical reaction is:

[tex]CS_2(g)+4Cl_2(g)\rightarrow CCl_4(l)+2SCl_2(s)[/tex]

[tex]Cl_2[/tex] is the limiting reagent as it limits the formation of product and [tex]CS_2[/tex] is the excess reagent.

According to stoichiometry :

4 moles of [tex]Cl_2[/tex] give=  1 mole of [tex]CCl_4[/tex]

Thus 0.390 moles of  will give = [tex]\frac{1}{4}\times 0.390=0.0975moles[/tex] of [tex]CCl_4[/tex]

Mass of [tex]CCl_4=moles\times {\text {Molar mass}}=0.0975\times 154=15.0g[/tex]

Thus 15.0 g of [tex]CCl_4[/tex] will be formed upon the complete reaction of 27.7 grams of chlorine gas with excess carbon disulfide

Answer:

See explanation and image attached

Explanation:

The acid-catalyzed hydration of 1-methylcyclohexene proceeds by an SN1 mechanism. The reaction involves the formation of carbocations.

Two carbocations are formed leading to the major and minor products. The major product is obtained from the tertiary (more stable) carbocation while the minor product is obtained from the secondary (less stable carbocation).

Tertiary alcohols are not oxidized, hence the major product does not undergo oxidation. However, secondary alcohols are oxidized to ketones.

Answer:

B

Explanation:

you can tell by looking at the image lol the wires have to be connected

(brainliest please? c:)

( although its fine if not im just glad to have helped )

Answer:

The answer is B

Explanation:

Answer:

Explanation:

D or b

Sorry if wrong

Answer:

temporal

Explanation:

Answer:

50 CM burette

Explanation:

bvffvvhjf

Explanation:

1.undetectable to electromagnetic waves

2.hiding an object from an illumination containing diffre t wave lengths become difficult as the object sizes grow.

3. reduce the scattering by two orders.

Electromagnetic waves are unable to detect it. With increasing item sizes, it becomes more challenging to conceal an object from an illumination with various wave lengths. two orders down on the scattering.

Current clocking technology is defined as a hypothetical or made-up stealth technology that makes things like people or spaceships completely or partially invisible to certain electromagnetic (EM) spectrum wavelengths. In a specific frequency band, this gadget renders an object "invisible" to electromagnetic radiation. Obviously, cloaks that operate in the visible spectrum have the most fascinating potential uses.

These metamaterials, according to the researchers, can shield a medium-sized antenna from radio waves over a wide range of bandwidths, resulting in clearer communications. However, as visible light wavelengths are far shorter than radio waves, it is practically difficult to conceal huge things from them, such as the human body. The issue with present designs is that they can only handle a certain amount of bandwidth. Even this "perfect" 3D cloak that was previously exhibited could only conceal items from microwaves.

Thus, electromagnetic waves are unable to detect it. With increasing item sizes, it becomes more challenging to conceal an object from an illumination with various wave lengths. two orders down on the scattering.

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Answer:

C . Air resistance

Explanation:

Answer:

Gravity (D)

Explantion:

The more mass the more gravitational force

the more distance the less gravitational force

Answer:

1.01atm is the pressure of the gas

Explanation:

The difference in heights in the two sides is because of the difference in  pressure of the enclosed gas and the atmospheric pressure. This difference is in mm of the nonvolatile liquid. The difference in mm Hg is:

32.3mm * (0.993g/mL / 13.6g/mL) = 2.36mmHg

As atmospheric pressure is 765mm Hg and assuming the gas has more pressure than the atmospheric pressure (There is no illustration), the pressure of the gas is:

765mm Hg + 2.36mm Hg = 767.36 mmHg

In atm:

767.36 mmHg * (1atm / 760 mmHg) =

1.01atm is the pressure of the gas

Given:

Now,

The density of Hg will be:

= [tex]\frac{13.6}{0.791}[/tex]

= [tex]17.2 \ mm[/tex]

then,

= [tex]32.3\times (\frac{1 \ mm \ Hg}{17.2} )[/tex]

= [tex]18.73 \ mm \ Hg[/tex]

hence,

The pressure will be:

= [tex]765-18.73[/tex]

= [tex]746.27 \ mm \ Hg[/tex]

= [tex]0.993 \ atm[/tex]

Thus the above answer is right.

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[tex]\displaystyle 6 \ mol \ N_2[/tex]

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced] N₂ + 3H₂ → 2NH₃

[Given] 12 mol NH₃

[Solve] x mol N₂

Step 2: Identify Conversions

[RxN] 1 mol N₂ → 2 mol NH₃

Step 3: Stoich

Answer:

[tex]\boxed {\boxed {\sf 6 \ moles \ of \ N_2}}[/tex]

Explanation:

1. Balance Equation

We are given the reaction:

[tex]1 N_2+3H_2 \rightarrow 2 NH_3[/tex]

The equation is already balanced. Both sides have 2 moles of nitrogen and 6 moles of hydrogen.

2. Conversions

In this reaction, 1 mole of nitrogen produces 2 moles of nitrogen tryhdride:

[tex]1 \ mol \ N_2 \rightarrow 2 \ mol \ NH_3[/tex]

3. Stoichiometry Calculations

Use the conversion rate as a fraction.

[tex]\frac{ 1 \ mol \ N_2}{2 \ mol \ NH_3}[/tex]

Multiply the number of moles of nitrogen trihydride produced: 12 moles.

[tex]12 \ mol \ NH_3 *\frac{ 1 \ mol \ N_2}{2 \ mol \ NH_3}[/tex]

The moles of nitrogen trihydride cancel.

[tex]12 *\frac{ 1 \ mol \ N_2}{2} = \frac{ 12 \ mol \ N_2}{2}[/tex]

[tex]6 \ mol \ N_2[/tex]

6 moles of nitrogen are needed to produce 12 moles of nitrogen trihydride.

Explanation:

momentum increases with an increase in mass and velocity

Answer:

Na(s) + Cl(g) = NaCl(s)

Explanation:

s means solid

g means gas

Metals are solid at room temperature.

Crystals are solids

Answer:

0.0723371390261859

Answer:

Percent Composition of 41K = 6.7302%

Explanation:

The explination is in the image.

The percentage composition of 41K isotope of potassium according to the given data is 6.7302 percent.

Given that the atomic masses of the potassium isotopes are:

mass of 39K = 38.9637amu

mass of 40K = 39.9639amu

mass of 41K = 40.9618amu

and the percentages are:

percentage of 39K = 93.2581%

percentage of 40K =  0.0117%

percentage of 41K = x

Given average mass of potassium = 39.0983amu

sum (mass of isotopes × percentage abundance) =  average mass

38.9637 × 93.2581% +  39.9639 ×  0.0117%  + 40.9618 × x = 39.0983

x = 6.7302%

So the percentage composition of 41K is 6.7302%

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ones that are answered through observing :)

Answer: D.

Explanation:

ones that are answered through observing.

Answer:

%N = 25.94%

%O = 74.06%

Explanation:

Step 1: Calculate the mass of nitrogen in 1 mole of N₂O₅

We will multiply the molar mass of N by the number of N atoms in the formula of N₂O₅.

m(N): 2 × 14.01 g = 28.02 g

Step 2: Calculate the mass of oxygen in 1 mole of N₂O₅

We will multiply the molar mass of O by the number of O atoms in the formula of N₂O₅.

m(O): 5 × 16.00 g = 80.00 g

Step 3: Calculate the mass of 1 mole of N₂O₅

We will sum the masses of N and O.

m(N₂O₅) = m(N) + m(O) = 28.02 g + 80.00 g = 108.02 g

Step 4: Calculate the percent composition  of N₂O₅

We will use the following expression.

%Element = m(Element)/m(Compound) × 100%

%N = m(N)/m(N₂O₅) × 100% = 28.02 g/108.02 g × 100% = 25.94%

%O = m(O)/m(N₂O₅) × 100% = 80.00 g/108.02 g × 100% = 74.06%

Answer:

Answer:

                   Potassium Nitride is composed of the greatest number of atoms.

Explanation:

find the number of atoms present in each compound we will write down their molecular formulas and then we will add up the number of atoms present in them.

A: Dinitrogen Monoxide:

                                       Chemical formula of Dinitrogen Monoxide is N₂O. Therefore, it contains two atoms of Nitrogen and one atom of oxygen Hence, in total it contains 3 atoms.

B: Sodium Chloride:

                               Chemical formula of Sodium Chloride is NaCl. Therefore, it contains one atom of Sodium and one atom of Chlorine Hence, in total it contains 2 atoms.

C: Potassium Nitride:

                                       Chemical formula of Dinitrogen Monoxide is K₃N. Therefore, it contains three atoms of Potassium and one atom of Nitrogen Hence, in total it contains 4 atoms.

D: Carbon Dioxide:

                               Chemical formula of Carbon Dioxide is CO₂. Therefore, it contains one atom of Carbon and two atoms of Oxygen Hence, in total it contains 3 atoms.

Explanation:

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Answer:

Cellular respiration

Explanation:

The electronic configuration is the depiction of the electron present in the atomic shells. The ground-state electron configuration containing three unpaired 6p electrons is bismuth.

The electronic configuration is said to be the representation of the distribution of the electrons in the orbitals or the sub-shell of the atom. It shows the arrangement from the lower to higher energy levels.  

The element which contained an unpaired 6p electron is bismuth (Bi). It has an atomic number, 83, and an electron configuration: [Xe] 4f¹⁴5d¹⁰6s²6p³. The p orbital can accommodate six electrons and hence the three electrons are unpaired.

Therefore, in the electronic configuration with unpaired 3p orbitals, the element will be bismuth.

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Your question is incomplete, but most probably your full question was, The ground-state electron configuration contains three unpaired 6p electrons, what is the element symbol?

Answer:

A

Explanation:

have a great day!!!!!!!!

Answer: a. 3.36 L

b. 33.2 g

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atm respectively.

To calculate the number of moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

[tex]\text{Number of moles of} Fe_2O_3=\frac{16.0g}{159.69g/mol}=0.1mole[/tex]

[tex]3O_2(g)+4Fe(s)\rightarrow 2Fe_2O_3(s)[/tex]

a. 2 moles of [tex]Fe_2O_3[/tex] are produced by = [tex]3\times 22.4L=67.2L[/tex] of [tex]O_2[/tex]

Thus 0.1 moles of  [tex]Fe_2O_3[tex] are produced by =[tex]\frac{67.2}{2}\times 0.1=3.36L[/tex] of [tex]O_2[/tex]

b. [tex]3\times 22.4L=67.2L[/tex] of [tex]O_2[/tex] react with = [tex]4\times 55.8=223.2g[/tex] of iron

Thus 10.0 L of [tex]O_2[/tex] react with = [tex]\frac{223.2}{67.2}\times 10=33.2g[/tex] of iron

Answer:

a

Explanation:

the answer to the question is a

Among the following chemical equations, redox reaction is [tex]3 MnO_2+4 Al\rightarrow 3 Mn +2 Al_2O[/tex].

The redox reaction can be defined as a reaction that involves the transfer of electrons between two species. Redox reactions comprise of two parts a reduced part and an oxidized part, which occur simultaneously . The part which is reduced gain electrons and hence there is a increase in oxidation state of the species.

While, the part which is oxidized looses electrons and hence there is a decrease in oxidation state of the species.During redox reactions, there is no net change in the number of electrons . Electrons which are given off in oxidation are used up in reduction.

Therefore, the correct option is B.

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Answer:

Explanation:

mass of glass m = 50.8 g

specific heat s = .67 J /g °C

initial temperature = t

Loss of heat by glass

= m s Δ t

= 50.8 x .67 x ( t - 25.6 )

= 34.036 x ( t - 25.6 )

Gain of heat by water

= 150 x 4.2 x ( 25.6 - 22.0 )

= 2268

Heat gain = heat lost

2268 = 34.036 x ( t - 25.6 )

2268 = 34.036  t - 871.32

34.036 t = 3139.32

t = 92.23°C .  

Answer:

increased temperatures

Explanation:

The temperatures are increasing in the ocean because of ocean warming, by climate change. The heat in the ocean stresses healthy corals, which drains them of their vibrant colors, known as bleaching.

Answer:

it is directly proportional to the temperature of the gas

Explanation: