For the molecule c3h9n, draw a structural formula and its lewis dot structure

a. pressure increases

Gay Lussac's Law

When the volume constant, the gas pressure is proportional to its absolute temperature

[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]

The concentration of the copper half cell with 0.22 V is [tex]\rm \bold{5.7\;\times\;10^{-11}\;M}[/tex].

In the electrochemical cell, the reduction and oxidation takes place in different electrodes, and thereby it is termed as half cell. The standard cell potential of the given cell is 0 V.

The reduction potential of one half cell cathode is considered to be given as 1.6 mM. The cell potential is 0.22 V.

The potential of the half cell is given as:

[tex]\rm E=E^\circ_{cell}-\dfrac{0.059}{n}\;log\dfrac{anode}{cathode}\\\\0.22\;V=0-\dfrac{0.059}{2}\;log\dfrac{anode}{1.6\;\times\;10^-^3\;M}\\\\Anode\;conc.=5.7\;\times\;10^{-11}\;M[/tex]

The concentration of the copper half cell with 0.22 V is [tex]\rm \bold{5.7\;\times\;10^{-11}\;M}[/tex].

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Half-life is a time in which the concentration of the substance gets reduced to 50% of the initial concentration. The number of tritium that will be left after 51 years is 0.624 kg.

Isotopes are chemical substances that have the same atomic number but different atomic mass because they have a different number of neutrons in the nuclei.

The half-life of the isotope, tritium is 12.3 years. Assuming we have 11 kg of substance and a number of years 51 years.

[tex]11 \times 2 ^{\frac{-51}{12.3}} = 0.6239 \;\rm kg[/tex]

Therefore, the number of tritium that will be left after 51 years is 0.624 kg.

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The pressure (in atm) in a 5 L tank with 37.50 grams of oxygen gas at 350 K is 6.715 atm.

Pressure of gas will be calculated by using the ideal gas equation as:
PV = nRT, where

P = pressure = ?

V = volume = 5 L

R = universal gas constant = 0.082 L.atm / K.mol

T = temperature = 350 K

n is the moles of gas and it will be calculated as:
n = W/M, where

W = given mass = 37.50 g

M = molar mass of oxygen = 32g/mol

n = 37.50/32 = 1.17 mol

On putting all these values, we get

P = (1.17)(0.082)(350) / (5) = 6.715 atm

Hence resultant pressure of the oxygen gas is 6.715 atm.

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The pH of a solution that is 0.50 M in HCOOH is 2.045.

pH of the solution will be calculated by taking the negative logarithm of the concentration of H⁺ ion.

Given chemical reaction will be:

                            HCOOH(aq)   ⇄   H⁺(aq)   +   HCOO⁻(aq)

Initial:                         0.50                    0                    0

Equilibrium:              0.50-x                  x                    x

Given that, pKa = 3.75

Ka = [tex]10^{-pKa}[/tex]

Ka = [tex]10^{-3.75}[/tex] = 0.000178

Ka for the above equation will be written as:
Ka = [H⁺][HCOO⁻]/[HCOOH]

Ka = (x)² / (0.50-x)

x is negligible as compared to 0.5, so the equation becomes

0.000178 = (x)² / 0.50

x² = (0.000178)(0.5) = 0.000089

x = 0.009

[H⁺] = 0.009M

pH will be calculated as:

pH = -log(0.009) = -(-2.045) = 2.045

Hence pH of the solution is 2.045.

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The molar concentration of Cl⁻ ions in a 1. 00 m solution of AgCl₂ with no excess silver ions is 0.020M.

Molar concentration of Chloride ions present in the silver chloride solution will be calculated by using the formation constant equation as:

Kf = [AgCl₂] / [Ag²⁺][Cl⁻]²

For AgCl₂ value of Kf is 2.5×10⁵.

Chemical reaction with ICE table is:

                           Ag²⁺(aq)  +  2Cl⁻(aq)  →  AgCl₂

Initial:                         0               0                1

Change:                    +x             +2x             -x

Equilibrium:               x                2x             1-x

On putting all the values on the Kf equation, we get

2.5×10⁵ = (1-x) / (x)(2x)²

x is negligible as compared to 1 so the term 1-x becomes 1,

2.5×10⁵ = 1 / 4x³

x = 9.97 × 10⁻³ M

Concentration of chloride ions = 2x = 2(9.97 × 10⁻³) = 0.020M.

Hence the molar concentration of chloride ions is 0.020M.

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The speed of water waves in the sea, which have wavelength 300 m is 21 m/s.

Speed is the distance travelled by an object in per unit time.

Given that, the wavelength of the waves is 300 m

The frequency of the waves is 0.07 hz

To find the speed

By the formula of speed

Speed = frequency × Wavelength

Putting the value in the equation

Speed = 300  × 0.07 = 21

Thus, the speed of these waves is 21 m/s

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The compound that a carbon-carbon double bond is Butene.

Alkene is a hydrocarbon containing at least a carbon–carbon double bond. Alkene is often used as synonym of olefin, that is, any hydrocarbon containing one or more double bonds.

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56g is the coreect acsnw

Answer:

The molecular weight of sodium sulfate is 142.1 g/mol. To calculate the mass of sodium sulfate, substitute the values in the formula. Therefore, the mass of sodium sulfate formed when we start with 200.0 grams of sodium hydroxide and you have excess sulphuric acid is 355.25g.

The result of two alpha decay of Thorium 230 is Radon-222.

The radioactive decay results in the release of the subatomic particles resulting in reduction in the mass number by 4, and the atomic number by 2.

The result of alpha decay of thorium 230 is given as:

[tex]\rm ^{230}_{90}Th\;\rightarrow\;^{226}_{88}Ra\;+\;^{4}_{2}\alpha[/tex]

[tex]\rm ^{226}_{88}Ra\;\rightarrow\;^{222}_{86}Rn\;+\;^{4}_{2}\alpha[/tex]

The result of two alpha decay of Thorium 230 is Radon-222.

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Answer:

a state of matter created when particles, called bosons, are cooled to near absolute zero (-273.15 degrees Celsius, or -460 degrees Fahrenheit).

Explanation:

hope this helps

pls mark brainliest

Answer:

given statement is completely true

e.g . water H2O

Answer:

True

Explanation:

Water is amphoteric, which means it can act as both a Braonsted-Lowry acid and a Bronsted-Lowry base. Strong acids and bases ionize completely in aqueous solution, while weak acids and bases ionize only partially. The conjugate base of a Brønsted-Lowry acid is the species formed after an acid donates a proton.

Answer:

carbon nuclei...........

Answer:

Substances that dissolve most readily in water include ionic compounds and polar covalent compounds. aqueous solution. water that contains dissolved substances. solvent. the dissolving medium in a solution.

Explanation:

The rank of the pressure from highest to lowest are c, 1.22 x 10⁵ Pa < a, 736 mm hg < b, 0.928 < d, 728 torrs.

The force applied perpendicular to any object is the pressure.

First, we convert all the quantities into atm.

1. 1 mmHg = 0.00131579atm/mmHg

736mmHg = 0.96843 atm

2. 1 torr = 0.00131578947 atm/ torr

728 torr = 0.9579 atm

3. 1 pascal = 9.87 x 10⁻⁶

1.12 x 00000pa = 1.105 atm

So given value in atm are-a) 96843 atm b) 0.98atm c) 0.9579 aim d) 1105 atm.

SO, the order will be c<a< b<d.

Thus, the  order will be c<a<b<d.

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The individual numbers which are present in chemical formula is subscript.

Chemical formula of any compound of chemistry consist more than one atoms in it and gives idea about the number of atoms present in that compound.

Given chemical formula of glucose is C₆H₁₂O₆.

In the given chemical formula of glucose, number which shows the amount of carbon, hydrogen and oxygen are known as subscripts.

Hence, individual number are subscript.

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ΔH for the process is -252.3 cal/mol or -1056 j/mol.

A solid salt compound dissociates in liquid water to form an aqueous solution of its constituent ions.

This is a chemical reaction, with the required heat change at constant pressure termed the enthalpy of solution.

If this value is positive, then the final prepared solution will have a lower temperature than the starting pure solvent.

Conversely, a negative enthalpy value results in a solution temperature that is higher than the starting solvent temperature.

It is given that

NaOH (s) → Na (aq) + OH (aq)

mass of NaOH is 16.9 g

mass of water = 70 g

ΔT = 86.6-22.4 °C = 64.2 °C

q = m × Cg × ΔT

q = amount of energy released or absorbed

m = mass

Cg = specific heat capacity

ΔT = change in temperature

n = m ÷ M

n = moles of solute

m = mass of solute

M = molar mass of solute

ΔHsoln = q ÷ n

ΔHsoln = molar enthalpy (heat) of solution

q = amount of energy (heat) released or absorbed

n = moles of solute

Cg= 1 cal/gm/°C

Now substituting the values in the equation

q = m × Cg × ΔT

q = 16.9 * 1 * 64.2

q = 1085 cal

n = m ÷ M

M= 70/18=3.9

n=16.9/3.9

n=4.3

ΔH = q ÷ n

ΔH =1085 /4.3

ΔH= -252.3 cal/mol or -1056 j/mol

Therefore ΔH for the process

NaOH(s) → Na(aq) + OH(aq)

is -252.3 cal/mol or -1056 j/mol

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Answer:

13 %

Explanation:

(50 g) / (50 + 336 g) = .1295       or  13 %

The required volume of 0.10M NaOH solution that student will add is 20 mL.

Volume of any solution which is required to prepare buffer will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

On putting values, we get

V₁ = (0.1)(20) / (0.1) = 20mL

Hence required volume of NaOH solution is 20mL.

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Answer:

Quarts of blood = 72000

Quarts of urine = 720

Explanation:

Here, we know that

1 year = 365 days

For blood

200 × 365 = 72000

For urine

2 × 365 = 720

Thus, The average person's kidney filters 72000 quarts of blood and 720 quarts of urine.

The energy i.e. needed is 26.8 kJ of energy

The calculation is as follows:

the moles of diethyl ether is

= 1.01 moles

Since one mole of diethyl ether require heat = 26.8 kJ

Now the energy should be the same i.e. 26.8

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Answer: 0.44

Explanation:

The specific heat of iron if 985 J of energy is required to raise the temperature of 158.5 g from 10.0°C to 24.0°C is 0.44J/g°C.

The specific heat capacity of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

985 = 158.5 × c × (24°C - 10°C)

985 = 2219c

c = 985/2219

c = 0.44 J/g°C

Therefore, the specific heat of iron if 985 J of energy is required to raise the temperature of 158.5 g from 10.0°C to 24.0°C is 0.44J/g°C.

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The chemical equation for the reaction between HCl and NaOH  is HCl+NaOH → NaCl+H₂O.

Neutralization reactions are those in which an acid and base reacts for the formation of water molecule and salt.

Chemical reaction between the hydrochloric acid and sodium hydroxide base is shown by the below equation

HCl + NaOH → NaCl + H₂O

Where sodium chloride is a salt.

Hence the chemical equation is HCl + NaOH → NaCl + H₂O.

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Answer:

true

Explanation:

Because water has a ability to flow electricity through it

Answer:

Acidic

Explanation:

pOH = - log (9.8 x 10^-11)

pOH = 10

pOH + pH = 14

pH = 14-10

pH = 4

Anything below pH of 7 is acidic.

Answer:

his procedure being repeated with the same or similar outcome

Explanation:

For findings to be valid, they must be reproducible. Thus, if others perform the same experiment and they get the same results, then soda might increase your height.

It's like if I claim that by saying bloody mary 3 times in mirror and I saw the ghost. For this to be valid, you and other need to do it and see if you do indeed see the ghost.

Explanation:

It's so because we know that stone is insoluble, ain't it, so it takes space in water & the water level rises.

But, when a spoon of sugar is added to water, it is soluble & hence mixes with water, so it doesn't rise.

I Hope this helps! (ㆁωㆁ)

Answer:

Im pretty sure its B) 43

Explanation: