Which event most likely occurs at point K?

cooling
cementing
melting
weathering

Answer:

The answer is Physical

Answer:

physical property

Explanation:

Answer:

[tex][CH_3CHO]=0.550M[/tex]

Explanation:

Hello.

In this case, since the rate law for this chemical reaction would be:

[tex]r=\frac{d[CH_3CHO]}{dt} =-k[CH_3CHO]^2[/tex]

The integrated rate law after its demonstration is:

[tex]\frac{1}{[CH_3CHO]} =kt+\frac{1}{[CH_3CHO]_0}[/tex]

Thus, for the given rate constant, initial concentration of CH3CHO and elapsed time, the resulting concentration is:

[tex]\frac{1}{[CH_3CHO]} =6.73x10^{-5}\frac{L}{mol*s}*45.0s +\frac{1}{0.551mol/L}\\\\\frac{1}{[CH_3CHO]}=3.03x10^{-3}L/mol+1.81L/mol[/tex]

[tex]\frac{1}{[CH_3CHO]} =1.82L/mol[/tex]

[tex][CH_3CHO]=0.550M[/tex]

Best regards!

Answer:

[tex]E=6.7\times 10^{-26}\ J[/tex]

Explanation:

Given that,

The frequency of an FM radio station is 101.5 MHz i.e. [tex]101.5\times 10^6\ Hz[/tex]

The energy of a photon is given by :

[tex]E=h\nu[/tex]

Where

h is Planck's constant

[tex]E=6.63\times 10^{-34}\times 101.5\times 10^6\\\\E=6.72\times 10^{-26}\ J[/tex]

or

[tex]E=6.7\times 10^{-26}\ J[/tex]

So, the energy of the photon is [tex]6.7\times 10^{-26}\ J[/tex]. Hence, this is the required solution.

Answer:lll

I looked and lll is the only one that wont make since so it’s lll

Answer:

Explanation below

Explanation:

Titration can be explained or described as a process of combining acid and base to give salt and water, with the addition of indicator. In this experiment, the indicator is added in order to know the exact time when the required amount of the acid has reacted with the base.

This is process or experiment is also known as volumetric analysis.

Answer:

0.060 g

Explanation:

Hydrogen gas is made up of 2 atoms of hydrogen [tex]H_2(g)[/tex].

From the formula for calculating mole:

mole = mass/molar mass

Molar mass of hydrogen gas = 2.016 g/mol

Hence, 0.030 mole hydrogen gas would weigh:

mass = molar mass x mole

              =  2.016 x 0.030

                = 0.06048 g

The mass of hydrogen gas that participated to the correct number of significant digits is, therefore, 0.060 g

Mass of CO₂ = 1.3 x 10⁵ kg

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2C₈H₁₈ + 25O₂⇒ 16CO₂ + 18H₂O

16 gallon = 60566,6 ml

[tex]\tt mass=\rho\times V\\\\mass=0.7\times 60566.6=42396.62~g[/tex]

[tex]\tt MW=114.232~g/mol\\\\mol=\dfrac{42396.62}{114.232}=371.145[/tex]

[tex]\tt \dfrac{16}{2}\times 371.145=2969.159[/tex]

[tex]\tt =2969.159\times 44(MW~CO_2)=130642.996~g=1.3\times 10^5~kg[/tex]

Answer:

(a) H = +1, Cr = +6, O = -2

(b) H = +1, S = +6, O = -2

(c) K = +1, Cr = +6, O = -2

(d) H = +1, N = +5, O = -2

(e) Cr = +6, O = -2

Explanation:

(a)

In H₂CrO₄

The oxidation state of Hydrogen (H) is +1

The oxidation state of Oxygen (O) is -2

To find the oxidation state of Cr,

Let the oxidation state of Cr be x

Then, (+1×2) + x + (-2×4) = 0

2+x-8 = 0

x = +6

Hence, oxidation state of Cr is +6

(b)

In H₂SO₄

The oxidation state of Hydrogen (H) is +1

The oxidation state of Oxygen (O) is -2

To find the oxidation state of Sulphur (S),

Let the oxidation state of Sulphur be x

∴ Then, (+1×2) + x + (-2×4) = 0

2+x-8 = 0

x = +6

Hence, the oxidation state of S is +6

(c)

In K₂Cr₂O₇

The oxidation state of Potassium (K) is +1

The oxidation state of Oxygen (O) is -2

To find the oxidation state of Chromium,

Let the oxidation state of Chromium be x

Then, (+1 ×2) + (x ×2) + (-2×7) = 0

+2 +2x -14 = 0

2x = +12

x = +6

Hence, the oxidation state of Chromium is +6

(d)

In HNO₃

The oxidation state of Hydrogen (H) is +1

The oxidation state of Oxygen (O) is -2

To find the oxidation state of NItrogen (N),

Let the oxidation state of Nitrogen be x

+1 + x + (-2×3) = 0

1 +x - 6 = 0

x = +5

Hence, the oxidation state of Nitrogen is +5

(d)

In Cr₂O₇²⁻

The oxidation state of Oxygen is -2

To the oxidation state of Chromium (Cr(,

Let the oxidation state of Chromium be x

Then, (2×x) + (-2×7) = -2

2x - 14 = -2

2x = +12

x = +6

Hence, the oxidation state of Chromium is +6

Answer:

I think its a compound : )

Answer:

C is the answer

Explanation:

and your welcome

Answer: 2p..........................

Answer:

2p

Explanation:

Answer:

When it asks how much heat it is required to change the temperature then it is called specific heat capacity, and when it says how much heat required TO CHANGE THE STATE then it is latent heat so here we will do by formula of

           Q = mcT

where q is heat

          m is mass

           T is change in temperature which is going to be 24 here

put all the values you will get the answer

HOPE IT HELPS!

Answer:

violet light

Explanation: ck12 says so

Answer: In an element’s square on the periodic table, the number with the greatest numerical value represents the (atomic mass).

Explanation: look at pic attached :

Answer:

Planting more trees - the roots of trees hold the soil together and help to reduce soil erosion from wind and rain.

Improving the quality of the soil - this can be managed by encouraging people to reduce the number of grazing animals they have and grow crops instead. The animal manure can be used to fertilise the crops grown. Growing crops in this way can improve the quality of the soil as it is held together by the roots of plants and protected from erosion. This type of farming is more sustainable.

Water management - water can be stored in earth dams in the wet season and used to irrigate crops during the dry season. This is an example of using appropriate technology to manage water supplies in the desert environment.

Explanation:

Answer:

Explanation:

Let final temperature be T.

Heat lost by hot water

mass x specific heat x fall in temperature

75 x s x ( 75.7 - T )

Heat gained by cool water

= 100 x s x ( T - 23 )

heat lost= heat gained

75 x s x ( 75.7 - T )   = 100 x s x ( T - 23 )

5677.5 - 75 T= 100 T- 2300

175 T= 7977.5

T = 45.6⁰C .

The final temperature of the mixed water is 45.6 ⁰C.

The given parameters;

The final temperature of the mixture is calculated as follows;

Based on the principle of conservation of energy;

Heat lost by hot water = heat gained by the cold water

mcΔθ₂ = mcΔθ₁

75 x 4.184 x (75.7 - T) = 100 x 4.184 x (T - 23)

75 x (75.7 - T) = 100 x (T - 23)

(75.7 - T) = 1.333(T - 23)

75.7 - T = 1.333T - 30.659

75.7 + 30.659 = 1.333T + T

106.359  = 2.333T

[tex]T = \frac{106.359}{2.333} \\\\T = 45.6 \ ^0C[/tex]

Thus, the final temperature of the mixed water is 45.6 ⁰C.

Learn more here: https://brainly.com/question/18762674

Answer:

[tex]V_2= 13.0L[/tex]

Explanation:

Hello.

In this case, we can consider this problem related to ideal gases which are those that are not attracted or repulsed to each other, and can be studied via the ideal gas equation:

[tex]PV=nRT[/tex]

Thus, since we have two conditions and the moles of the gas have not changed, we can write:

[tex]\frac{P_1V_1}{T_1}= \frac{P_2V_2}{T_2}[/tex]

Because the initial conditions for 10.0 L of the gas are 1 atm and 273.15 K (STP) and the final conditions are 800 mmHg (1.053 atm), so the new volume is:

[tex]V_2=\frac{P_1V_1T_2}{T_1P_2}=\frac{1atm*10.0L*373.15K}{273.15K*1.053atm}\\\\V_2= 13.0L[/tex]

Best regards!

When the balloon placed under 800. mmHg, the new volume will be "13.0 L".

According to the question,

Pressure, P₁ = 1 atm

                P₂ = 1.053 atm

Temperature, T₁ = 273.15 K

                       T₂ = 373.15 K

Volume, V₁ = 10.0 L

By using the Ideal gas equation,

→ PV = nRT

or,

→ [tex]\frac{P_1 V_1}{T_2} = \frac{P_2 V_2}{T_2}[/tex]

Then,

The new volume be:

→ V₂ = [tex]\frac{P_1 V_1 T_2}{T_1 P_2}[/tex]

By substituting the above values,

       = [tex]\frac{1\times 10.0\times 373.15}{273.15\times 1.053}[/tex]

       = 13.0 L

Thus the approach above is right.  

Find out more information about ideal gas equation here:

https://brainly.com/question/20348074

Answer:

3.22m

Explanation:

c=3×10^8m/s=speed of the light

lambda= wavelength=?

frequency=?

lambda=c÷frequency

lambda=(3×10^8)÷(93.1×10^6)

lambda=3.22m

Answer:

D

Explanation:

The vibration of molecules is studied using infrared spectroscopy. Infrared spectroscopy is used to study the various modes of vibration of a molecule.

Infrared spectroscopy is used to is used to identify various functional groups by observing their stretching frequencies.

For a molecule to be infrared active, the molecule must give rise to a change in the molecular electric dipole moment.

Answer:

a). Second order reaction.

b). [tex]$50.14\ Lmol^{-1}s^{-1}$[/tex]

c).  [tex]$t_{1/2}=1994.41 \ h$[/tex]

Explanation:

a). The order of the reaction of ozone decomposition is second order reaction.

It will be second order because the plot between the Inverse of Concentration versus Time will be a straight line.

[tex]$\frac{1}{[A]}=\frac{1}{[A_0]}+kt$[/tex]

b). Calculating slope by

[tex]$y_0= 100000.000$[/tex]

[tex]$y_1= 952380.952$[/tex]

[tex]$\Delta y = 852380.9524$[/tex]

[tex]$x_0=0E+00$[/tex]

[tex]$x_1= 2E+04$[/tex]

[tex]$\Delta x = 2E+04$[/tex]

Slope, k = [tex]$\frac{\Delta y}{\Delta x}=50.14$[/tex]

Thus we see that the slope of the curve will be rate constant.

Therefore, rate constant = [tex]$50.14\ Lmol^{-1}s^{-1}$[/tex]

c). We know half life ,

[tex]$t_{1/2}=\frac{1}{k[A_0]}$[/tex]

[tex]$[A_0]=0.00001 \ mol/L$[/tex]

k = [tex]$50.14\ Lmol^{-1}s^{-1}$[/tex]

Putting the values, we get

[tex]$t_{1/2}=\frac{1}{50.14[0.00001]}$[/tex]

[tex]$t_{1/2}=1994.41 \ h$[/tex]

Answer:

that is going to be B the lower the energy of the electron

Answer:

B.

Explanation:

A chemical bond holds together attractions of atoms

Answer:

16 orbitals

Explanation:

For n = 3 there are nine orbitals, for n = 4 there are 16 orbitals, for n = 5 there are 52 = 25 orbitals, and so on. To calculate the maximum number of electrons in each energy level, the formula 2n2 can be used, where n is the principal energy level (first quantum number).

Found this online. Hope it helps.

Answer:

1. simple carbohydrates or simple sugars such as table sugar and the sugar in milk, 2. complex carbohydrates such as starches and 3. dietary fiber.

Explanation:

Answer:

It would be to be hammered into shapes because malleability is how flexible a metal is.

Answer:

They can be turned into positive ions.

Explanation:

neutral atoms can be turned into positively charged ions by removing one or more electrons. Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons . By adding one more electron we get a negatively charged Ion with a net charge of negative 1

Answer:

Problems1.10: Between each pair of vertebrae of the spine is a disc of cartilage of thickness 0.5 cm. Assume the disc has a radius of 0.04 m. The shear modulus of cartilage is 10 N/m2. A shear force of 10 N is applied to one end of the disc while the other end is held fixed. (a) What is the resulting shear strain? (b) How far has one end of the disc moved with respect to the other end

Answer:

the correct answer is A

Explanation:

Column A should be “Time,” and Column B should be “Position.”

I took the test and got it right with my big brain lol.

Answer:

The number of protons and neutrons of antimony is 51 and 71 respectively.

Explanation:

We have for antimony:

A: mass number = 122

Z: atomic number = 51

The atomic number is equal to the number of protons, hence the antimony has 51 protons.

The mass number is:

[tex] A = Z + N [/tex]

Where:

N: is the number of neutrons

Then, the number of neutrons is:

[tex] N = A - Z = 122 - 51 = 71 [/tex]

Therefore, the number of protons and neutrons of antimony is 51 and 71 respectively.

I hope it helps you!