Can someone help?? This is really hard.

Can Someone Help?? This Is Really Hard.

Answers

Answer 1

Answer:

See Explanation

Explanation:

Let us consider the first two reactions, the initial concentration of CO was held constant and the concentration of Hbn was doubled.

2.68 * 10^-3/1.34 * 10^-3 = 6.24 * 10^-4/3.12 * 10^-4

2^1 = 2^1

The rate of reaction is first order with respect to Hbn

Let us consider the third and fourth reactions. The concentration of Hbn is held constant and that of CO was tripled.

1.5 * 10^-3/5 * 10^-4 = 1.872 * 10^-3/6.24 * 10^-4

3^1 = 3^1

The reaction is also first order with respect to CO

b) The overall order of reaction is 1 + 1=2

c) The rate equation is;

Rate = k [CO] [Hbn]

d) 3.12 * 10^-4 = k [5 * 10^-4] [1.34 * 10^-3]

k = 3.12 * 10^-4  /[5 * 10^-4] [1.34 * 10^-3]

k = 3.12 * 10^-4/6.7 * 10^-7

k = 4.7 * 10^2 mmol-1 L s-1

e) The reaction occurs in one step because;

1) The rate law agrees with the experimental data.

2) The sum of the order of reaction of each specie in the rate law gives the overall order of reaction.


Related Questions

CaCO3 (s) + 2HCl (aq) → CaCl2 (aq) + CO2 (g) + H20 (1)
In the chemical reaction above, what states are CaCO3 and
H2O in, respectively?
a) Aqueous, Solid
b) Gas, Liquid
c) Gas, Aqueous
d) Solid, Liquid
e) Solid, Aqueous

Answers

Answer:

solid and liquid state respectively

Answer:

A - solid, liquid

Explanation:

ur welcome

Explain why smell is a physical property?

Answers

Answer:

because no chemical change is happening

Explanation:

Why does reducing oil pollution in the oceans require an international effort?

Humans do not have the resources to stop ocean pollution.

Half of Earth’s oceans are not owned by any particular country.

Natural occurrences cause far more ocean pollution than human activities.

Cleaning oil pollution requires approval from the United Nations.

Answers

Answer:

Half of Earth’s oceans are not owned by any particular country.

Explanation:

Reducing oil pollution requires an international effort because ocean waters do not have boundaries and there are certain portion of the ocean that are not owned by any nation.

Oil pollution is a serious environmental issue. Oil spills can be carried by ocean currents from one place to another. They affect the aquatic ecosystem within a locality thereby reducing the biodiversity of life.

International collaborations are sought to combat any issue of oil spillage due to global undertone to it.

please help!!!
Decide which molecules in the simulation will represent the substances from the actual reaction. Include a strategy to deal with the difference in structure between the actual reaction N2 + 3H2 ⇌ 2NH3 and the simulated reaction. Not all molecules need to be used.

Answers

Answer:

I FINNALY GOT MY HANDS ON THE AWNSER, dont

copy word for word though Explanation:

Simulation of a reaction is a chemical reaction modeling or demonstration tool, using various software to better understand the molecular structure and the physical and chemical properties of the molecule. Here the actual reaction is N2 + 3H2 -----> 2NH3. In the simulation reactions, the nitrogen and hydrogen molecules in the actual reaction are described by different colored circles or dots and the bonds are produced using a single, double or triple line that touches each molecule and gives an appearance like the reactants and the products' ball and stick model. Example: Molecule of nitrogen as o---triple line---o. A molecule of hydrogen as O———O. Chemical symbols such as N and H are expressed in Actual Chemical Reaction, N2 and H2 and the bonds are represented by single, double or triple lines that do not impact the atoms in the molecule as follows: Nitrogen Molecule: N -triple Bond- N. Hydrogen Molecule: H - H.

CAN YOU EXPLAIN?
Which structures distinguish cells in multicellular plants and
animals from those of unicellular organisms, and why are
cells important for identifying organs and their functions?

Answers

Answer:

Explanation:

Outer skin cells form flattened stacks that protect the body from the environment. Muscle cells are slender fibers that bundle together for muscle contraction. The cells of multicellular organisms may also look different according to the organelles needed inside of the cell.

What is the probability of a
short plant in the cross
between a Tt and a tt plant?

Answers

75% would be your answer since the lower letter represents a shorter plant

Look at this image.

C is written in the middle and O is written on the left and right of C with four dots around each O. Two straight lines are drawn between C and each O.

What do the lines in this image represent?

Non-bonded valence electrons of oxygen
Valence electrons donated in carbon dioxide
Ionic bonds between carbon and oxygen
Double covalent bonds in carbon dioxide

Answers

Answer:

double covalent bonds in carbon di oxide

Carbon dioxide is a covalent compound formed by carbon and oxygen. There are two covalent double bonds between carbon and each oxygens. Thus option d is correct.

What is covalent bond?

Covalent bond is a type of bond formed by the sharing of electrons between two atoms. Whereas, ionic bond is formed by lose or gain of electrons. Covalent bond is weaker than the ionic bond.

Carbon contains 4 electrons in its valence shell. Thus it needs 4 more electrons to attain stability. Oxygen contains two electrons in its valence shell and thus it needs 2 more electrons to become stable

A double bond is formed when two electrons are shared between two atoms. Thus, oxygen shares its two electron with carbon. And the second oxygen also shares its two electrons. Thus carbon attain 4 more electron and become stable.

Carbon shares its two electron with one oxygen and other two electron with the second oxygen thus, make each oxygen attains octet and become stable. Thus, the two straight lines between carbon and oxygen is double covalent bonds.

To find more about covalent bonds, refer the link below:

https://brainly.com/question/19382448

#SPJ2

Do the molecules of a liquid have (more, less, or the same) freedom of movement as the molecules of a gas? *​

Answers

Answer: Less
Reasoning: The molecules of a liquid are closer together and they are constantly running into each other, limiting their freedom of moment.

All can change the Earth slowly and gradually except

A. erosion
B. weathering
C. melting rock
D. earthquake

Answers

Answer:

D. Earthquake

Explanation:

I think earthquake because the question is asking for SLOW changes and an earthquake is kind of a sudden change...so yeah.

Hope this helps :D

How are plants and animals the
they different?
same? How are

Answers

Answer:

Plants and animals have different cell types, one is a autotroph and one is a heterotroph, plants can use photosynthesis and animals cannot.

Explanation:

Hello I am sorry if I did not answer the question right or didn’t answer your question but I believe your asking how plants and a
animals are the same and different.

Answer : Plants and Animals are the same because they are both living things, which means they are both made out of cells and also both have DNA and both require energy to grow. Plants and Animals are different because animals usually move around to find their food. While plants are usually immobile and create their food via photosynthesis also animals cells absorb nutrients from food, while plant cells use plastids to create energy from sunlight. Hope I Helped UvU -• •-

which kind of substances get involved in a double displacement reaction?
A) only elements
B) covalent compounds
C) ionic compounds

Answers

Answer:

C) ionic compounds

Explanation:

Only ionic compounds takes place in a chemical double displacement reaction.

The reaction involves an actual exchange of partners to form a new compounds.

These compounds involved are ionic compounds.

there is usually the formation of an insoluble compound called precipitatethere is formation of water or any other non-ionizing compoundthere is liberation of a gaseous product

A solution has a pOH of 12.4. What is the pH of this solution?

Answers

Answer:

pH = 1.6

Explanation:

pH + pOH = 14

=> pH + 12.4 = 14

∴ pH = 1.6

pls mark it as the brainliest

Calculate the density of chloroform

Answers

Answer: The density of chloroform is 1.47 g/mL

Explanation : Given,

Volume = 40.5 mL

Mass of cylinder = 85.16 g

Mass of cylinder and liquid = 145.10 g

First we have to calculate the mass of liquid (chloroform).

Mass of liquid = Mass of cylinder and liquid - Mass of cylinder

Mass of liquid = 145.10 g - 85.6 g

Mass of liquid = 59.5 g

Now we have to calculate the density of liquid (chloroform).

Formula used:

[tex]Density=\frac{Mass}{Volume}[/tex]

Now putting g all the given values in this formula, we get:

[tex]Density=\frac{59.5g}{40.5mL}[/tex]

[tex]Density=1.47g/mL[/tex]

Therefore, the density of chloroform is 1.47 g/mL

What is the mass of 4.50 moles of magnesium chloride, MgCl2?

Answers

Answer:

427.5g

Explanation:

Given parameters:

Number of moles  = 4.5moles

Unknown:

Mass of MgCl₂  = ?

Solution:

To solve this problem;

     Mass  = number of moles x molar mass

Molar mass of MgCl₂  = 24 + 2(35.5) = 95g/mol

  Mass  = 4.5 x 95  = 427.5g

The balanced chemical equation below shows the combustion reaction of butane (C₄H₁₀). What is the mole ratio of butane (C₄H₁₀) to carbon dioxide (CO₂)? *
[tex]2C_{4}H_{10} + 13O_{2} --\ \textgreater \ 8CO_{2} + 10H_{2}O[/tex]

2:8
13:8
13:10
1:5

Answers

I believe that the correct answer is 13:10
the correct answer is 2:8

Can someone pleaseeee help if you’re correct I’ll give u brainlist

Answers

Answer:

I think it the second one adding external weight or the third one

Explanation:

I could never. im more like the last one

I'm really sorry if this was no help

A solution with a pH of 5 is ___ times as acidic as a solution with a pH of 6

Answers

Answer:

logarithmic

Explanation:

name some animals and plants that live on land?


please mark as brainliest​

Answers

Answer:

cats, ants, spiders, elephants, porcupine, tiger, kangaroo, and ostrich. Mosses, hornworts, liverworts, lycophyte, seed plants, pteridophytes, and archaeopteridales.

Explanation:

4 What is the maximum number of students among whom 125 oranges, 150 citrus
and 225 guavaes can be equally divided? What is share of each fruit for a student?
Find it.

Answers

Answer:

25

Explanation:

fing the highest common factor

pime factorisation:

125=5×5×5

150=2×3×5×5

225=3×3×5×5

find the common numbers in all prime numbers

》5×5=25

How many molecules are in a gram?

Answers

Answer:

well, u can figure that out by multiply that amount by Avocado's number, which is 6.022x10 to the power of 23

That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 1023 atoms, molecules, or formula units of that substance.
Hope it is helpful

b- How many electrons does sodium have?

Answers

Answer: sorry I’m late but it is 11 electrons

Explanation:

An oxide of trivalent metal contains 32% of oxygen. Calculate the atomic mass of the metal.​

Answers

The atomic mass of the metal.(M) = 51 g/mol

Further explanation

Given

32% of oxygen

Required

the atomic mass of the metal.​

Solution

An oxide of trivalent metal : M₂O₃(Ar O = 16 g/mol)

The molar mass of metal oxide = 2M+16.3=2M+48

32% of oxygen, then :

32% x 2M+48 = 48

0.32(2M+48)=48

0.64M+15.36=48

0.64M=32.64

M=51

Determine the number of electrons in the Cu2+ ion.

Answers

Answer: 27 electrons

copper has 29 protons in its nucleus. atoms can only lose or gain electrons. so because copper has 29 protons and will always have 29 protons, and the Cu2+ ion has a positive charge, there are more protons than electrons.

that means there should be 2 less electrons than protons. that leaves us with 29 protons and 27 electrons.

hope this helps :)

How do chemical reactions turn substances into new substances?

help! how do chemical reactions turn substances into new substances?

Answers

Answer:

I think it's B.

How is the weather in the two cities pictured most likely going to change in the next 24 hours

Answers

Answer:

theres no picture

Explanation:

Calculate the number of formula units in 1.87 mol of NH4Cl

a
1.13 x 1024 NH4Cl

b
1.88 x 1023 NH4Cl

c
6.75 x 1024 NH4Cl

d
1.12 x 1024 NH4Cl

Answers

Hey I’m sorry bro I’m not sure if you are interested or t1 I can send link that you have to do that for you guys I can do that tomorrow if you want me to send you a link or if I say yes I will do that for you I can

Answer:

c is your answer

Explanation:

So, 53.49 g (M) of NH4Cl N H 4 C l contains 14.01 g (m) of N . So, the mass percent of nitrogen in NH4Cl N H 4 C l is 26.19%.

Mastering Problems
Balancing Chemical Equations (10.1)
71. Write skeleton equations for these reactions.
a. hydrogen iodide(g) → hydrogen(g) + iodine(g)
b. aluminum(s) + iodine(s) — aluminum iodide(s)
c. iron(II) oxide(s) + oxygen(g) -> iron(III) oxide(s)

Answers

a. HI(g) ⇒ H₂9g) + I₂(g)

b. Al(s) + I₂(s)⇒AlI₃(s)

c. FeO(s)+O₂(g)⇒Fe₂O₃(s)

Further explanation

Given

word equations

Required

skeleton equations

Solution

The skeleton equation shows the chemical formula of the reaction between reactants and products, regardless of the actual amount of the reacting compound (unbalanced reaction)

The skeleton equations :

a. HI(g) ⇒ H₂9g) + I₂(g)

b. Al(s) + I₂(s)⇒AlI₃(s)

c. FeO(s)+O₂(g)⇒Fe₂O₃(s)

Acetylene gas, C2H2, is used as a fuel in welding torches. How many acetylene molecules are
in a cylinder that delivers 1400 L of acetylene at STP?

Answers

Answer:

375.8 × 10²³ molecules

Explanation:

Given data:

Number of molecules of acetylene = ?

Volume of cylinder = 1400 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

PV = nRT

1 atm × 1400 L = n ×  0.0821 atm.L/ mol.K    × 273.15 K

1400 L.atm = n × 22.43  atm.L/ mol

n = 1400 L.atm / 22.43  atm.L/ mol

n = 62.4 mol

1 mole contain 6.022 × 10²³ molecules

62.4 mol × 6.022 × 10²³ molecules / 1 mol

375.8 × 10²³ molecules

Which of the following is an example of how prosthetics engineering differs
from most other engineering fields?
A. Designing a device that is biologically compatible
B. Use of the engineering process to design
C. Predicting how the device will fail
D. Using a material that is sufficiently strong

Answers

Answer:

A. Designing a device that is biologically compatible

Explanation:

Of which substance would an adult be able to consume the largest quantity before experiencing life-threatening effects?

Your answer:

botulinum


acetaminophen


sugar


water


salt

Answers

Answer:

Water

Explanation:

hope that helps:)

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