The goal of the VSEPR model is to arrange the position of the atoms and lone pairs surrounding the central atom in a manner that minimizes _____.

Answer: Other nonmetal elements are oxygen, neon, fluorine, nitrogen, carbon, boron, chlorine, argon, and hydrogen.

Explanation:

If you look at the periodic table the elements are grouped together. For example the metals are in the middle, the nonmetals are on either sides (noble gases, earth alkaline, reactive nonmetals, and etc.)

Answer: pH =  0.1

Explanation:  pH = - log[H3O^+] .

 HCl reacts with water : HCl + H2O ->  Cl^- + H3O^+

So [H3O^+] = c(HCl) = 0.8 M

pH = - log(0.8) = 0,0969

Answer:

C. US and China

Explanation:

The biggest source of CO2 emissions are electricity + burning coal. Both the United States and China are huge industrial and producing countries, so the amount of CO2 these countries release is HUGE. Not to mention the high population of these countries also causes transportation pollution, i.e. car pollution. If I am incorrect please tell me.

Hope this helps!

The concentration of the original sulfuric acid solution is 0.05398M

In order to determine the concentration of the original sulfuric acid solution, we use the volume of the standard sodium hydroxide solution used in the titration along with the concept of stoichiometry.

Let us check the number of moles of sodium hydroxide (NaOH) used in the titration,

Moles of NaOH = Molarity of NaOH x Volume of NaOH

=0.1463M x 18.47 mL

= 0.002699 Moles

As the balanced chemical equation between Sulfuric acid (\(H_SO_4\)) and sodium hydroxide is 1:2, then we can deduct that 1 mole of sulfuric acid can react with 2 moles of sodium hydroxide.

In that case, the number of moles of sulfuric acid in the 10.00 mL sample is;

Moles of \(H_2SO_4\) = 0.002699 Moles x (1/2)

= 0.0013495 Moles

Now we can calculate the concentration of the original sulfuric acid solution:

That is, the concentration of \(H_2SO_4\) = Moles of \(H_2SO_4\) / Volume of original acid solution

=0.0013495 Moles / 0.02500L

=0.05398 M

Therefore, the concentration of the original sulfuric acid solution is approximately 0.05398 M.

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Answer: oml

Explanation: thats gross

i'd eat the pic below then that

Mixing calcium carbonate and HCl

Heating copper sulfate pentahydrate

Mixing potassium iodide and lead nitrate

Combining magnesium and HCl

Burning the candle.

The crushing of limestone is a bodily trade it no longer alters the chemical composition of the limestone. The heating of limestone is a chemical trade the limestone decomposes into two other materials, lime and carbon dioxide. both ended in gas formation. both ended in shade change.

Rust is not anything however Iron Oxide is a brand new substance shaped out of the response. The color of the floor of the iron additionally modifications. hence, rusting of iron is a chemical trade. Rusting is an instance of chemical exchange. A chemical property describes the ability of a substance to go through a particular chemical alternate. The chemical belonging of iron is that it is miles capable of combining with oxygen to form iron oxide, the chemical call of rust. like several steel carbonates, calcium carbonate reacts with acidic solutions to supply carbon dioxide gas.

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Answer:

d. condensation of water on a wind shield of a car

Explanation:

Condensation involves the conversion of moist air into liquid.

Gas has a higher energy compared to liquid. This is why Gas particles move at random motion and faster in relation to solid and liquid particles due to the high energy content.

The conversion of the gas to liquid means that there was loss or release of energy which validates the answer.

To find the total amount of amoxicillin given over 11 days, we can use dimensional analysis.

   Start by identifying the known quantities: 2 tablets per day and 375 mg per tablet.

   Next, identify the unknown quantity: the total amount of amoxicillin given over 11 days (in mg).

   Write the equation using the known quantities and the unknown quantity:

   (2 tablets/day) x (375 mg/tablet) x (11 days) = unknown quantity

   Use the units to cancel out units and get the final result:

   2 x 375 x 11 = 8250 mg

So, over 11 days, the patient will receive 8250 mg of amoxicillin.

Answer:

C

Explanation:

its physical change.

The mass of 65% and 20% nitric acid that must be mixed to produce 4.5 kg of 30% nitric acid are 1.306 kg and 3.189 kg respectively.

The volume of 4.5 kg of 30% nitric acid is determined using the formula below:

The density of 30% nitric acid is 1.18 g/mL

The mass of the  30% nitric acid is 4.5 kg or 4500 g

Hence, the volume will be:

The volume of 30% nitric acid = 4500 / 1.18

The volume of 30% nitric acid = 3813.56 mL

The volume of 65% and 20% nitric acid required is then determined.

Let the volume of the 65% and 20% nitric acid be x and y respectively;

x + y = 3813.56 ---(1)

amount of acid in 3813.56 ml solution = 30% * 3813.56

amount of acid in 3813.56 ml solution = 1144.07 mL

therefore;

60% * x + 20% * y = 1144.07 mL

0.6x + 0.2y = 1144.07 ----(2)

Solving for x and y in the two equations

From (1), x = 3813.56 - y

Substitute x = 3813.56 - y in (2)

0.6(3813.56 - y) + 0.2y = 1144.07

0.4y = 1144.07

y = 2860.18 mL
x = 3813.56 - 2860.18

x = 953.38 mL

The mass of the acids required is then determined as follows:

The density of 60% nitric acid is 1.37 g/mL

Mass of 60% nitric acid required = 953.38 mL * 1.37 g/mL

Mass of 60% nitric acid required = 1306 g or 1.306 kg

The density of 20% nitric acid is 1.115 g/mL

Mass of 20% nitric acid required = 2860.18 mL * 1.115 g/mL

Mass of 20% nitric acid required = 3189 g or 3.189 kg

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To solve this problem, I'll need some additional information related to the molar mass of butane (C4H10). Please provide the molar mass of butane so that I can proceed with the calculations.

Answer:

A. 16.0 grams

B. 3.1 mol of oxygen

Explanation:

A.

The oxygen atom has mass = 2.66x10^-23g

A mole of oxygen atoms can be calculated as:

[2.66x10^-23/1 oxygen atom] x [6.023x10²³ oxygen atoms/1 mol]

= 16.0 grams of oxygen

So a mole of oxygen has 16.0 grams of O2

B.

For 0.050 kg of water, we have 16.0 grams

(0.050x10³g/kg )x (1mol/16)

= 3.1 mol of oxygen

So 3.1 mol of oxygen has mass which is equal to the mass of water.

Answer:

Fe + CuCl2 = FeCl2 + Cu

Explanation:

This is already balanced.

10.0 g of ethanol would require more heat to raise the temperature by 10.0°C Because it has a higher boiling point.

The boiling point of a liquid is the temperature at which the vapour pressure of the liquid becomes equal to the atmospheric pressure of the liquid’s environment. At this temperature, the liquid is converted into a vapour.

The normal boiling point is high for liquids with strong intermolecular attractions and low for liquids with weak intermolecular attractions.

10.0 g of ethanol would require more heat to raise the temperature by 10.0°C because it has a higher boiling point.

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114.5 g is the total mass of the beaker .

Total mass of beaker=53.10g+5.348g+ 56.1g

Total mass=114.5 g

Mass is used in physics to specific inertia, a fundamental function of all remember. basically, it's far a mass of rely's resistance to changing its course or pace in response to the software of a force.

The exchange that an applied force produces is smaller the extra mass a body has. The kilogram, the unit of mass within the international machine of gadgets, corresponds to 6.62607015 1034 joule seconds using Planck's consistent (SI). One joule is produced by way of multiplying one kilogram by means of one rectangular meter per 2d.

The kilogram is decided by genuine measurements of Planck's regular on account that the second one and the meter have formerly been described in phrases of other bodily constants.

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An impact of the specific heat of the water on the planet is that islands and coastal places have moderately pleasant climates. Therefore, option A is correct.

The specific heat of water is relatively high compared to other substances. This means that water requires a significant amount of heat energy to increase its temperature. As a result, water has a stabilizing effect on the climate of coastal and island regions.

The high specific heat of the water helps to moderate temperature changes, resulting in milder and more pleasant climates in these areas.

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The volume of 12 gas forms when 21 L Cl2 react at STP is 21 L.

To determine the volume of 12 gas (I assume you mean I2 gas) formed when 21 L of Cl2 reacts at STP (standard temperature and pressure), we need to use the ideal gas law equation.

The ideal gas law equation is given by:

PV = nRT

Where:

P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

At STP, the pressure is 1 atm, and the temperature is 273.15 K.

From the balanced equation, we can see that the molar ratio between Cl2 and I2 is 1:1. So, if 21 L of Cl2 reacts, it will produce an equal volume of I2 gas.

Given that the volume of Cl2 is 21 L, we can assume the volume of I2 gas formed will also be 21 L.

Therefore, the volume of I2 gas formed is 21 L.

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Answer: In the Western United States and Canada, open range is rangeland where cattle roam freely regardless of land ownership. ... Land in open range that is designated as part of a "herd district" reverses liabilities, requiring an animal's owner to fence it in or otherwise keep it on the person's own property.

Explanation: Mark me as brainliest

Answer:

Exothermic Reaction

Product  = Calcium hydroxide + hydrogen

Explanation:

The mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur .

The molecular formula of Aluminum Sulfate is \(Al_2(SO_4)_3.\) In one molecule of aluminum sulfate, there are 3 sulfur atoms. To calculate the mass of aluminum sulfate, follow the steps below:

Step 1: Calculate the molar mass of aluminum sulfate using the periodic table.Al = 27.0 g/molS = 32.1 g/molO = 16.0 g/mol

(2 × Al) + (3 × S) + (12 × O) = molar mass of \(Al_2(SO_4)_3.\) = 342.2 g/mol

Step 2: Find the number of moles of sulfur in the given number of atoms of sulfur.2\(2.837*10^{26\) atoms of sulfur × 1 mol S/\(6.022 * 10^{23\)atoms S = 0.0470 mol S

Step 3: Use the molar ratio of sulfur to aluminum sulfate to calculate the number of moles of aluminum sulfate.1 mol \(Al_2(SO_4)_3.\) / 3 mol S = 0.333 mol\(Al_2(SO_4)_3.\) per mol S0.0470 mol S × 0.333 mol \(Al_2(SO_4)_3.\)/mol S = 0.0157 mol \(Al_2(SO_4)_3.\)

Step 4: Calculate the mass of aluminum sulfate.0.0157 mol \(Al_2(SO_4)_3.\) × 342.2 g/mol\(Al_2(SO_4)_3.\)= 5.373 g\(Al_2(SO_4)_3.\)

Therefore, the mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur.

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Spontaneous processes are processes such as;  a soluble salt dissolves when it is mixed with water, iron rusts when it exposed to salty water and a match continues to burns after it is lit.

A spontaneous process is a process that occurs without external input of energy or does not require a continuous input of energy once the process has gotten underway.

Among the options the processes which are spontaneous under standard conditions of 1 atm, 298 K and 1 M are;

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Answer:

4e-5 is the length in meters

Have a nice day! :)

Answer:

\(\huge\boxed{\sf M_2 \approx 0.38 \ M}\)

Explanation:

Initial volume = \(V_1\) = 55.5 mL

Initial Molarity = \(M_1\) = 1.3 M

Final volume = \(V_2\) = 188.5 mL

Final Volume = \(V_2\) = ?

\(M_1V_1 = M_2V_2\)

Put the given data.

Finding new molarity.

\((55.5)(1.3)=(188.5)(M_2)\\\\72.15 = 188.5 (M_2)\\\\Divide \ both \ sides\ by \ 188.5\\\\72.15/188.5 = M_2\\\\M_2 \approx 0.38 \ M\\\\\rule[225]{225}{2}\)

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The charge on an electron is ~

" - " symbol is used to show that its negative.

Answer:

0.13 J/gC i believe.

Explanation:

Answer:

130.133 J/(kg·K)

Explanation:

Result in other units:

0.130133 J/(g·K)

31.0876675695 cal/(kg·K)

0.0310876675695 kcal/(kg·K)

0.130133 J/(g·°C)

DNA polymerase makes a copy of the gene that is inserted into the mRNA

it is put together using base-pairing rules.

mRNA, or messenger RNA, is a type of RNA that carries genetic information from the DNA in the nucleus of a cell to the ribosomes, where it is used to synthesize proteins. It represents an exact copy of a gene in the sense that it is transcribed directly from the DNA sequence of the gene, with each nucleotide in the mRNA molecule corresponding to a specific nucleotide in the DNA sequence.

This process of transcription ensures that the information contained in the gene is accurately transferred to the ribosomes, where it can be translated into the corresponding sequence of amino acids in the protein. However, it's important to note that mRNA does not represent an exact copy of the entire genome, as only certain genes are transcribed into mRNA and there can be post-transcriptional modifications that affect the final protein product.

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Answer: it is put together using base-pairing rules.

Explanation: i took the test!

1+1 is equal to 2 :)

1+1=2

The following are three weather variables and the tools that can be used to observe and gather data on them to ascertain how air mass movements and weather changes are related:

Scientists can discover patterns and connections between changes in weather and changes in air mass movement by observing and recording data on these meteorological variables.

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