Please help me 17 points!

Given :

Number of molecules of hydrogen peroxide, N = 4.5 × 10²².

To Find :

The mass of given molecules of hydrogen peroxide.

Solution :

We know, 1 mole of every compound contains Nₐ = 6.022 × 10²³ molecules.

So, number of moles of hydrogen peroxide is :

[tex]n = \dfrac{N}{N_a}\\\\n = \dfrac{4.5\times 10^{22}}{6.022\times 10^{23}}\\\\n = 0.0747 \ moles[/tex]

Now, mass of hydrogen peroxide is given as :

m = n × M.M

m = 0.0747 × 34 grams

m = 2.54 grams

Hence, this is the required solution.

Weight of Chloroform : = 2.862 kg

Given

Density 1.483 g/ml

Volume = 1.93 L

Required

Weight of Chloroform

Solution

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume  

Convert density to kg/L :

=1.483g/ml = 1.483 kg/L

So the weight(mass) :

= ρ x V

= 1.483 kg/L x 1.93 L

= 2.862 kg

Answer:

[tex][SO_2Cl_2]=0.0175M[/tex]

Explanation:

Hello!

In this case, considering that the decomposition reaction of SO2Cl2 is first-order, we can write the rate law shown below:

[tex]r=-k[SO_2Cl_2][/tex]

We also consider that the integrated rate law has been already reported as:

[tex][SO_2Cl_2]=[SO_2Cl_2]_0exp(-kt)[/tex]

Thus, by plugging in the initial concentration, rate constant and elapsed time we obtain:

[tex][SO_2Cl_2]=0.0225Mexp(-2.90x10^{-4}s^{-1}*865s)[/tex]

[tex][SO_2Cl_2]=0.0175M[/tex]

Best regards!

Answer:

d. The sisters played against each other in tennis, but they did it without spite.

Explanation:

Answer:

The sisters played against each other in tennis, but they did it without spite

Explanation:

Answer:

C. interior plains

Explanation:

sana makatulong

Answer:

interior plains

Explanation:

edge 2021

Answer:

It takes millions of years to form,

Compressing on the ocean floor.

Then one day they come to shore

and sediments they are no more.

They can sometimes tell of life before

with layers, fossils and much more! this is the rock formation

it's not a decoration .

Explanation:

Number of moles : n₂ = 1.775 moles

Given

Moles = n₁ = 1.4

Volume = V₁=22.4 L

V₂=28.4 L

Required

Moles-n₂

Solution

Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles  

The ratio of gas volume will be equal to the ratio of gas moles

[tex]\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}[/tex]

Input the values :

n₂ = (V₂ x n₁)/V₁

n₂ = (28.4 x 1.4)/22.4

n₂ = 1.775 moles

I think it's C. commensalism

Answer:

COMMENSALISM IS CORRECT

Explanation:

Answer:

Q = 214.005 J

Explanation:

Given that,

Mass, m = 2.5 g

The hydrogen gas is heated from 17.0°C to 23.0°C.

The specific heat capacity of hydrogen is 14.267 J/g C.

We need to find how much energy is absorbed.

The formula for the energy absorbed is given by :

[tex]Q=mc\Delta T\\\\Q=2.5\times 14.267 \times (23-17)\\\\Q=214.005\ J[/tex]

So, the required energy is 214.005 J.

Answer:

1 gram of the substance

Explanation:

You have to put grams in the denominator, so they cancel out and leave you with moles

Answer 1: The correct answer is b. convergent continental-continental boundary.

A convergent continental-continental boundary refers to a convergent plate boundary where two continental plates meet or come together. When this happens, a forceful collision occurs, and structures like mountains start to form. The Himalaya mountain range is formed as a result of the convergence of the Indian and Eurasian continental plates.

Answer 2: The correct answer is d. convergent oceanic-oceanic boundary.

Volcanic island arcs refers to a curved line of volcanoes formed from the subduction (sinking) of one oceanic plate below another plate. Examples of volcanic island arcs include Japanese Islands and Alaskan Islands.

Answer 3: The correct answer is b.convergent oceanic-continental boundary.

A continental volcanic arc is an arc-shaped chain of volcanoes that form from the subduction of an oceanic plate under a continental plate.

Answer:

it is

Explanation:

i think all you have to do is add mint oil to boiling hot water and you get mint tea i guess

Answer:

[tex]Dietary\ Calories=65.6kcal[/tex]

Explanation:

Hello!

In this case, since we can see that the heat released by the combustion of the mayonnaise is absorbed by the bomb calorimeter and water, we can set up the following equation:

[tex]m_{mayonnaise}q_{mayonnaise}=C\Delta T[/tex]

Whereas q for mayonnaise stands for the heat due to its usage; thus, we plug in to obtain:

[tex]q_{mayonnaise}=\frac{5.20kJ/\°C*2.93\°C}{0.555g} \\\\q_{mayonnaise}=27.45\frac{kJ}{g}[/tex]

Now, if 10.0 g are eaten, the energy provided by it turns out:

[tex]E_{mayonnaise}=27.45kJ/g*10.0g\\\\E_{mayonnaise}=274.5kJ[/tex]

And we need that value in dietary calories, 1 kcal:

[tex]Dietary\ Calories=274.52kJ*\frac{1kcal}{4.184kJ}\\\\ Dietary\ Calories=65.6kcal[/tex]

Best regards!

Answer:

A. It would float with about 80% of the cube below the surface of the water and 20% above the surface.

Explanation:

The choice that best describes what happens to cube of the given density value is that it would float with about 80% of the cube would be below the surface of the water and 20% above the surface.

Density is the mass per unit volume of a substance. The more mass a body has relative to volume, the great it's density. In short, density is directly proportional to mass and inversely related to volume.

The density of water is 1g/mL

If the density of the cube were to be the same with that of water, the substance will just mix up with water .

Here the density is less than that of water.

The density is 0.2g/mL

Therefore, 20% will stay afloat and 80% will be below the surface of the water.

Answer:

HCl + NH₃ → NH₄⁺ + Cl⁻

Explanation:

When a strong acid as HCl reacts with a weak base as NH₃ a salt that comes from the conjugate acid, NH₄⁺, and the ion of the acid, Cl⁻, is produced as follows:

This is the acid- base reaction

The base captures the proton of the acid (proton aceptor) and the acid give the proton (Proton donor)

Answer: 0.0096g/cm^3

Explanation: density = mass/1.33*pi*r^3

Answer:

B ska Uffculme u to quell torso

The final temperature : 317 °C

Given

V₁=2.5 L

V₂ = 5 L

T₁ = 22 + 273 = 295 K

Required

The temperature, T₂

Solution

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Input the value :

T₂ = (T₁ x V₂) : V₁

T₂ = (295 x 5) : 2.5

T₂ = 590 K = 317 °C

Answer:

77.9 g

explanation:

Answer: 77.9 g

Explanation:

The number of atoms : 33

Given

The chemical formula: 3Mg(OH₄)₂

Required

The number of atoms

Solution

The chemical formula of a compound shows the mole ratio and the number of each of its constituent components (number of atoms)

Usually, the ratio of the elements in a compound is indicated by their subscript number after the monoatomic or polyatomic in the compound

While the coefficient in front of the compound indicates the number of molecules

In the chemical formula 3Mg (OH₄) ₂, there are 3 molecules of Mg (OH₄) ₂, so the number of atoms of the elements:

Mg = 3

O = 3 x 2 = 6

H = 3 x 4 x 2 = 24

Total atoms = 3 + 6 + 24 = 33

Answer:

false

Explanation:

The genotype of 50% of offspring will be Gg, 25% will be gg, and 25% will be GG. Hence, it is true.

An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype. In other words, it is the genetic makeup of an organism. Phenotypes are determined by genotypes.

There are three different genotype types: homozygous dominant (PP), homozygous recessive (PP), and heterozygous (Pp). Examples of genotypes are hair color, skin color, height, hair texture, and blood group.

When two parents who are both Gg (Bb) for a gene are crossed, then the genotype of their offspring will be GG, gg, Gg. Hence, it is true.

Learn more about genotype, here:

https://brainly.com/question/26124553

#SPJ6

Answer:As temperature increases, reactions take place. Generally, higher temperatures mean faster reaction rates; as molecules move about more quickly, reactant molecules are more likely to interact, forming products.

Explanation:

Answer:

Endothermic and Exothermic Reactions

Many familiar chemical reactions, such as the burning of coal, rusting and exploding gunpowder, give off heat; chemists call these reactions exothermic. Because reactions liberate heat, they increase the ambient temperature.

Answer:

Answer is c.

Explanation:

when you mix sugar with water,the sugar dissolves to make a transparent solution.

I hope it's helpful!

Answer:

i am not sure i am really just doing it for the points but yea

Explanation:

im just ok lol i wish you guys the best

Answer:

shtfu

Explanation:

Answer:

Follows are the solution to this question:

Explanation:

Please find the complete question in the attachment file.

In option a)

In the periodic group of [tex]3s^2 \ 3p^1[/tex] main group component to valence electronic structure (IIIA group) and Aluminum (Al). The monatomic ion forms a load of (+3)

In option b)

The Chlorine within the periodic group (VIIA group) is the main group element for valence electron configuration [tex]3s^2\ 3p^5[/tex] (Cl). It constitutes a monatomic ion with a load of (-1).

Electron configuration is the arrangement and distribution of electrons of an atom in an atomic orbital or of a molecule in a  molecular orbital.

They are arranged according to the energy levels known as 1, 2, 3, 4, 5, and in the shells namely K, L, M, N.

1.The correct answers for the blank  are:

In the periodic group III A the element with electronic configuration

                                                 [tex]3s^{2} 3p^1[/tex]

is aluminium  (Al)  and the monatomic ion formed will be +3 charge.

2. The correct answers for the blank  are:

Chlorine (Cl)  is the main group element with electronic configuration of

                                              [tex]4s^{2} 4p^5[/tex]

and the charge of the monatomic ion is -1.

To learn more about electronic configuration follow the given link:

https://brainly.com/question/4949433

Answer:

0.753M

Explanation:

Molecular formula of luminol is as follows: C8H7N3O2

Molecular formula of the luminol (C8H7N3O2) = 12(8) + 1(7) + 14(3) + 16(2)

= 96 + 7 + 42 + 32

= 177g/mol

mole of luminol = mass/molar mass

mole = 10 ÷ 177

mole = 0.0565 mol

Molarity can be calculated using the formula: Molarity = mol/volume (L)

Volume of water = 75.0 mL = 75/1000

= 0.075L

Molarity (M) = 0.0565 ÷ 0.075

The molarity of the stock solution = 0.753M