Please help I’ll mark you brainiest if it’s correct. There is 3 answers to this one!

Answer:

91.28 g

Explanation:

The mass of C₃H₈ used is 91.08g

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.

A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.

Given,

Molecules of carbon dioxide = 3.75 × 10²⁴

We know that,

1 mole = 6.023 × 10²³ molecules

Moles of carbon dioxide = 3.75 × 10²⁴ ÷ 6.023 × 10²³

                                         = 6.226 moles

From the reaction, 3 moles of carbon dioxide is produced by 1 mole of C₃H₈.

So, 6.226 moles will be produced by (1 ÷ 3) × 6.226

                                          = 2.07 moles of C₃H₈

Mass of C₃H₈ = moles × molar mass

                      = 2.07 × 44

                     = 91.08g

Therefore, mass of C₃H₈ used is 91.08g

Learn more about Moles, here:

https://brainly.com/question/20486415

#SPJ2

Answer:

1.2x10⁻²³M = [Ag⁺]

Explanation:

The Kf of Ag(CN)₂⁻ is:

Ag⁺(aq) + 2CN⁻ → Ag(CN)₂⁻(aq)

Kf = 1.0x10²¹ = [Ag(CN)₂⁻] / [Ag⁺] [CN⁻]²

Where [] are equilibrium concentrations.

The initial concentrations of the reactants are:

[Ag⁺] = 3.0x10⁻³M * (130mL / 355mL) = 1.10x10⁻³M

335mL is the total volume of the solution

[CN⁻] =  0.14M * (225mL / 355mL) = 0.089M

In equilibrium, the concentrations are:

[Ag⁺] = 1.10x10⁻³M - X

[CN⁻] = 0.089M - 2X

Ag(CN)₂ = X

Replacing in Kf expression:

1.0x10²¹ = [Ag(CN)₂⁻] / [Ag⁺] [CN⁻]²

1.0x10²¹ = [X] / [1.10x10⁻³ - X] [0.089 - 2X ]²

1.0x10²¹ = [X] / 8.7131×10⁻⁶ - 0.0083126 X + 0.3604 X² - 4 X³

8.7131×10¹⁵ - 8.3126×10¹⁸ X + 3.604×10^20 X² - 4x10²¹ X³ = X

8.7131×10¹⁵ - 8.3126×10¹⁸ X + 3.604×10^20 X² - 4x10²¹ X³ = 0

X = 0.0011M → Right solution.

X = 0.0445M → False solution. Produce negative concentrations

Replacing:

[Ag⁺] = 0

[CN⁻] = 0.0868M

Ag(CN)₂ = 0.0011M

The equilibrium will shift to the left just a little bit until produce a determined amount of Ag⁺ that we can write as:

[Ag⁺] = X

Thus:

1.0x10²¹ = [0.0011] / [X] [0.0868M ]²

Answer:

23.60 mL NaOH

Explanation:

The reaction is CH3COOH + OH- --> CH3COO+ + H2O

Since the reaction is one-to-one, we can use M1V1 = M2V2.

M1 = 0.1894 M CH3COOH

V1 = 25.00 mL CH3COOH

M2 = 0.2006 M NaOH

V2 = ?

Solve for V2 --> V2 = M1V1/M2

V2 = (0.1894 M)(25.00 mL) / (0.2006 M) = 23.60 mL NaOH

Answer:

Temperature and precipitation

Explanation:

They determine how quickly weathering will be, and what kind of organic material may be available on the inside of the soils.

Temperature and precipitation is the major determining factor in soil formation. They define the type of organic material that can be present inside the soils as well as how rapidly weathering will occur.

The bioactive, porous media that has grown in the top layer of the Earth's crust is known as soil. Being a source of water as well as nutrients, a filter for harmful wastes, a site for their breakdown, and a participant inside the cycle of elements such as carbon through the planet's ecosystem, soil constitutes one of the main substrates of life on Earth.

It has changed as a result of weathering processes influenced by geographical, geologic, biological, and climatic factors. A practical understanding of soils including their management has also developed out of need since the development of agriculture with forestry in the eighth millennium BCE. Temperature and precipitation is the major determining factor in soil formation. They define the type of organic material that can be present inside the soils as well as how rapidly weathering will occur.

Therefore, temperature and precipitation is the major determining factor in soil formation.

To know more about soil, here:

https://brainly.com/question/27588666

#SPJ3

Answer:

because water wets stuff expect for fire.

Answer:

The meaning of wet is covered or saturated with water or another liquid, showing that is a glass is covered in water it is considered wet.

Explanation:

Answer:

0.96 J/g °C

General Formulas and Concepts:

Thermochemistry

Specific Heat Formula: q = mcΔT

Explanation:

Step 1: Define

[Given] m = 5.0 g

[Given] ΔT = 22.0 °C - 20.0 °C = 2.0 °C

[Given] q = 9.6 J

[Solve] c

Step 2: Solve for c

Answer:d

Explanation:

d

Hydrogen molecules being forced together by gravity is what best describes how a star is fuelled.

This is defined as the the universal force of attraction acting between all matter.

Hydrogen molecules is forced together by gravity which is how stars are fuelled in space thereby making option D the most appropriate choice.

Read more about Stars here https://brainly.com/question/3357478

Answer:

Here is every answer for analog and digital (in order)

Analog:

Digital (in order):

Explanation:

I did mine in bullet points, hopefully this helped!

Analog:

Signal Shape: Smooth and continuous

Numerical Values for Signal Estimations: Analog signals speak to one ceaseless variable as the result of another ceaseless time-based variable.

Amount of Information that can be transmitted: analog circuits can conduct as it were reasonably low-speed information communications.

Energy necessities: light, sound, temperature, position, and pressure Privacy and security : not encrypted

Clarity of Signal: clamor influences clarity and quality, commotion is amplified,

Digital:

Signal shape: stepping, square, and discrete

Numerical Values for Signal Measurements: digital communication methods transmit a complete measured value, in other words both a numeric value and a unit of measurement

Amount of data that can be transmitted: First of all, it is theoretically possible to transmit digital signals directly.

Energy requirements: voltage, accoustic pressure.

Privacy and security: encrypted

Clarity of signal: noise is lower in amplitude, electronics can ignore the noise, quality of signal is maintained, signal is high

Analog signal could be a continuous signal which speaks to physical estimations.

Digital signals are discrete time signals created by computerized balance.

Example :Human voice in discuss, analog electronic gadgets. Computers, CDs, DVDs, and other advanced electronic gadgets.

Answer:

8.43 x 1024 moles of I

Explanation:

Answer:

Reaction

Mg+H2SO4 ----》MgSO4+H2

so calculate the moles of magnesium first

moles of magnesium = given mass of mg/molar mass of magnesium

moles = 4/24.30

moles = 0.1646

One mole of magnesium produces one mole of magnesium sulphate

so 0.1646 moles of mg will produce 0.1646 moles of MgSO4

Mass of MgSO4 = 0.1646× 120.366

MgSO4 = 19.81 gm

conclusion the mass of magnesium sulphate that would be obtained from 4g of

magnesium is 19.81 gm!!

I d k it's right or wrong but i tried :)

Answer:

1×10^5

Explanation:

Pressure = Force/Area

P= 10/0.0001

P= 10000

P=1×10^5

Answer: [tex]Fe^{3+} > Mn^{4+}[/tex] > [tex]V^{3+}[/tex] = [tex]Ni^{2+}[/tex] > [tex]Cu^+[/tex]

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

Fe: 26: [tex]1s^2s^22p^63s^23p^64s^23d^{6}[/tex]

[tex]Fe^{3+}:23:1s^2s^22p^63s^23p^63d^{5}[/tex] : 5 unpaired electrons

Mn: 25: [tex]1s^2s^22p^63s^23p^64s^23d^{5}[/tex]

[tex]Mn^{4+}:23:1s^2s^22p^63s^23p^63d^{3}[/tex] : 3 unpaired electrons

V: 23: [tex]1s^2s^22p^63s^23p^64s^23d^{3}[/tex]

[tex]V^{3+}:23:1s^2s^22p^63s^23p^63d^{2}[/tex] : 2 unpaired electrons

Ni : 28 : [tex]1s^2s^22p^63s^23p^64s^23d^{8}[/tex]

[tex]Ni^{2+}:23:1s^2s^22p^63s^23p^63d^{8}[/tex]: 2 unpiared electrons

Cu : 29 : [tex]1s^2s^22p^63s^23p^64s^13d^{10}[/tex]

[tex]Cu^{+}:23:1s^2s^22p^63s^23p^63d^{10}[/tex]: 0 unpaired electrons

Thus the order of decreasing number of unpaired electrons:

[tex]Fe^{3+} > Mn^{4+}[/tex] > [tex]V^{3+}[/tex] = [tex]Ni^{2+}[/tex] > [tex]Cu^+[/tex]

Answer: What type of chemical reaction is rusting of iron?

Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons.

Answer:

sodium carbonate im pretty sure (the formula is Na2CO3)

Explanation:

hope this helps :))

Explanation:

1 is a process that occurs when gases in earth's atmosphere trap the sun's heat .

2 . heat in the atmosphere to warm the planet .

I only know the first too sorry ✨

Answer:

A pure substance is a substance or an element whose impurities are extracted by concentration by chemical means.

e.g Aluminium is made pure by concentration of it's ore, bauxite by treatment with excess Sodium Hydroxide solution.

Answer: To efficiently communicate with others

Explanation:

this was the right on answer for me might be different for others

The main need or want the wave technology shown meets to see objects surrounding more clearly.

It is a floating device that operates in the same direction as the waves. With the use of the technology, energy may be captured even from relatively small waves. The device that is moved by waves activates a hydraulic system that can power a generator. The tube segment contains all the generation equipment and systems.

Early mechanization (1770s to 1830s), steam power and railroads (1830s to 1880s), electrical and heavy engineering (1880s to 1930s), Fordist mass production (1930s to 1970s), and information and communication are the five waves that have so far slammed into our society (1970s to 2010s).

Wave energy, also known as wave power, is the energy that ocean surface waves carry and absorb. The energy is then put to use in a variety of productive ways.

Thus, The main need or want the wave technology shown meets to see objects surrounding more clearly.

To learn more about the wave technology, follow the link;

https://brainly.com/question/23345080

#SPJ5

Answer:

1.2 M

Explanation:

If you use the dilution equation (M1V1=M2V2), you end up with (50)(12)=(500)(M2), and when you solve for M2 you get 1.2 M.

Answer:

The answer is offspring

Explanation:

Answer:

Properties of transition elements

they are all metals and that most of them are hard, strong, and lustrous, have high melting and boiling points, and are good conductors of heat and electricity.

Answer:

The student shouldn't have added water to the acid.

Explanation:

The aim of titration is to standardize an unknown solution. Recall that a standard solution is one whose concentration is known.

After the acid has been prepared, it has a particular concentration. The student should't have diluted it further. The further dilution of a small volume of acid drastically reduces the concentration of the acid to such low value that the H^+ ions present are insufficient to react with the OH^- from base in order to turn the solution to pink.

Answer:Matter is made up of only charged particles.

Explanation: Took the test

Answer:

i needed that lol

thank you

Explanation:

Answer:

The daily change from daylight to darkness is caused by:the rotation of the Earth on its axis. If the Earth did not rotate as it does, the day/night cycle would be very different or possibly even nonexistent.

Explanation:

Answer:

D.lodine

Explanation:

Lodine is a nonsteroidal anti-inflammatory drug . It works by reducing hormones that cause inflammation and pain in the body. Lodine is used to treat mild to moderate pain, osteoarthritis, or rheumatoid arthritis.

I hope it's helpful for you......

Answer:  There are 3.3×1023atoms in 0.54 moles Pb. Explanation: To calculate the number of atoms in Pb, we use Avogadro's number,

Explanation:

Answer:

The formula tells us that each mole of CaCO3 contains 3 moles of Oxygen. Then 3 moles of CaCO3 would contain 3 X 3 or 9 moles of Oxygen. I mole is define as avogadro’s number of units. Avogadro’s number is 6.02 X 10^23. so the answer is 3 X 3 X 6.02 X 10^23. = 5.42 X 10^24