What is described by the VSEPR theory?
O A. The arrangement of atoms in a molecule
B. The oxidation numbers of atoms in a molecule
C. The kind of bonds formed in a molecule
O D. The outside forces operating on a molecule

Answer: 90 degrees        .

The specific heat capacity and molar heat capacity of the metal cannot be determined due to missing values.

However, the values can be obtained using the formula below:

The specific heat capacity and molar heat capacity of the metal are calculated using the formula below:

ΔH₁ + ΔHcalorimeter + ΔH₂ = 0

where:

ΔH₁ is the heat change of the water = m₁Cwater(Tfinal - T1)

ΔHcalorimeter is heat change of the = Ccalorimeter(Tfinal - T1)

ΔH₂  is the heat change of the metal = m₂c₂(Tfinal - T2)

ΔH₁ = 99.45 * 4.184 * (23.9 - 19.5)

ΔH₁ = 1830.83 J

ΔHcalorimeter = Ccalorimeter * 23.9 - 19.5

The heat capacity of the calorimeter is not given, therefor the specific heat capacity and molar heat capacity of the metal cannot be determined.

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Nitrogen is an important element to humans and organic chemistry in general, and it can be found mostly in Proteins and DNA, since proteins are polymers of amino acids monomers, which are the mix of amine (NH2) and carboxylic acids. In DNA's case the nitrogen will be found in the Nitrogen base. Letter B

Answer:

solusoin ( 0.0130 )²

Explanation:

Answer:

Explanation:

m= 80.0 g

Cp=0.8 J/gc

Change in T= 25

q=Cp X m X T  =0.8 X 80.0 X 25 =1600J

Postive q or enthalpy makes it endothermic.

The equilibrium constant for the reaction given that the equilibrium concentration of [PH₃] = 0.250 M, [H₂] = 0.580 M, and [P₄] = 0.750 M is 7.3

From the question given above, the following data were obtained:

The equilibrium constant for the reaction can be obtained as shown below:

Equilibrium constant = [Product]ᵐ / [Reactant]ⁿ

Where

Equilibrium constant = [H₂]⁶[P₄] / [PH₃]⁴

Equilibrium constant = [(0.580)⁶ × 0.750] / (0.250)⁴

Equilibrium constant = 7.3

Thus, the equilibrium constant for the reaction is 7.3

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Answer:

10.66  grams

Explanation:

Answer:

932.27 i think

Explanation:

Answer:

The independent variable is the cause while the dependent variable is the effect.

Explanation:

Answer:

B. Litmus paper

Explanation:

The test for chlorine can use either type of litmus paper, but blue litmus paper is used most commonly. The litmus paper must be damp - the water dissolves some of the chlorine so that it can react with the indicator on the litmus paper. This test shows that chlorine is a powerful bleach.

Answer:

Model B (in image) would the best representation of aluminum chloride.

Explanation:

It's the only model the has three chlorine atoms and one aluminum atom.

Additionally, Cl can only bond once, so it can't be bonded to multiple different atoms. Also, Al needs to have more than one bond to achieve the octet rule.

Answer:

Explanation:

N of the given NaOH solution is 0.015 N

To find M of the NaOH solution:

Given: 0.600 g/dl solution of NaOH.

Mass of NaOH = 0.600 gVolume = 1 L.

1L of NaOH solution contains 0.600 g NaOH.

Molar mass of NaOH = 40 g/mol

Number of moles of NaOH = Mass of NaOH / Molar mass of NaOH

= 0.600 g / 40 g/mol = 0.015 mol/L

Thus, Molarity (M) of NaOH = 0.015 mol/L.

To find N of the NaOH solution: Normality, N = M × n.

Where M is molarity of solution and n is the number of equivalents of solute in 1 L of solution.NaOH is a monobasic base and it produces 1 H+ ion on dissociation.

Thus, n = 1N = M × n= 0.015 mol/L × 1 equivalent/L= 0.015 N. Therefore, N of the given NaOH solution is 0.015 N.

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The Transcontinental Railroad was the main development that started a large movement of settlers to California. It was the first railway line to span the entire continent, connecting the east and west coasts of the United States.

The railroad greatly facilitated migration and allowed for widespread settlement of the West. It improved communication between the east and west coasts, sped up transportation, and made it possible for a more productive interchange of goods.

Also, the railroad made it possible for prospectors to reach California in search of the California Gold Rush. Also, the railroad made it possible for cattle ranchers to transport their herds of cattle to the California stockyards.

As a result, there was more beef available, which aided in the state's agriculture sector's expansion. Also, the railroad offered an effective way to ship mining and agricultural goods to the east coast.

Hence, the Transcontinental Railroad served as the main driving force behind the massive migration of settlers to California.

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Answer:

Explanation:

Here, we want to calculate the total bond energy and state if the reaction is exothermic or endothermic

a) Calculation of bond energy

Mathematically, that would be the difference between the energy of the bond formed (products) and the energy of bonds broken (reactants)

2 H-Cl bonds formed (energy out)

1 H-H bond in

1 Cl-Cl bond in

We have the bond energy as:

b) The reaction is exothermic because the total change in bond energy is negative. This is an indication of the fact that energy is released as the supplied energy (energy from reactants) is greater than the output energy (energy of products).

The element that helps the heart and is found in nuts and legumes is magnesium.

In this case, we are being asked about the element that promotes normal heart rhythm and muscle function and can be found in nuts, legumes, whole-grain products, and dark green vegetables. We have to know that this element is one of the key elements that are important to the health of a person.

Now we have to look at the options tat we have and see that magnesium is the element that is abundant in the nuts and the legumes and have been linked to the effective function of the heart.

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Answer:

To be successful, a passive solar home design must include some basic elements that work together:

Properly oriented windows. ...

Thermal mass. ...

Distribution mechanisms. ...

Control strategies.

Explanation:

The IUPAC name for the compound shown is 3-ethyl-2,2-dimethylpentane.

International Union of Pure and Applied Chemistry is referred to as IUPAC. The terminology for naming organic compounds has been provided by IUPAC. The root name, prefix, and suffix are the three components that make up an IUPAC name.

There are five carbon atoms in the longest chain. Consequently, pent is the structure's root name. Choose the longest chain where the substituents are represented by the fewest numbers.

On the longest chain, three substituents are present. It consists of one ethyl group and two methyl groups. One ethyl group and two methyl groups are substituted at C-2 and C-3, respectively. Therefore, 3-ethyl-2,2-dimethyl will be the prefix. Alkane makes up the functional group. Therefore, the suffix is ane.

This ends up naming the compound as 3-ethyl-2,2-dimethylpentane.

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Answer:

(1). Mole fraction = 0.152 for sulfur tetrafluoride gas.

Mole fraction = 0.848 For dinitrogen monoxide gas.

(2). Partial Pressure for dinitrogen monoxide gas = 187 kPa

Partial Pressure for sulfur tetrafluoride gas = 33.4 kpa.

(3). Total Partial Pressure = 220.4 kpa.

Explanation:

So, we are given the following data or parameters or information in the question above;

• Volume of the tank = 5.00L per tank;

• Temperature of the tank = 7.03°C;

• The mass of the content in the tank =

17.7g of dinitrogen monoxide gas and

7.77g of sulfur tetrafluoride gas.

So, we will be making use of the formulae below to calculate the MOLE FRACTION:

Moles, n= mass/molar mass and mole fraction = n(1)/ n(1) + n(2) per each constituents.

Moles, n1 = 17.7g of dinitrogen monoxide gas/ 44 grams per mole. =0.4023 moles.

Moles, n2 = 7.77g of sulfur tetrafluoride gas/ 108.1 grams per mole. = 0.07188 moles.

Total numbers of moles = n1 + n2 = 0.47415 moles

Mole fraction =0.4023 / 0.47415 = 0.848 of dinitrogen monoxide gas.

Mole fraction = 0.07188/0.47415 = 0.152 of sulfur tetrafluoride gas.

PART TWO: CALCULATE THE PARTIAL PRESSURE AND TOTAL PRESSURE BY USING THE FORMULA BELOW;

pressure × volume = number of moles × gas constant, R × temperature.

Pressure = n × R × T/ V.

For dinitrogen monoxide gas. ;

Partial Pressure = 0.4023 × 8.314 × 280.03 / 5 × 10^-3 = 187 kPa.

For sulfur tetrafluoride gas

Partial Pressure = 0.07188 × 8.314 ( × 280.03 / 5 × 10^-3. = 33.4 kpa.

(3). Total pressure = (187 + 33.4)kpa = 220.4 kpa

Answer:

133.34 g/mol

Explanation:

Answer:

89.6 F

Explanation:

Brain-List?

The paper is soaked and diluted if a paper is left in the container overnight.

To soak something is to submerge it into water

When the hydrogen bonds that hold the cellulose fibers together break apart and weaken, this causes the fibers to separate more easily. Thus, the paper becomes weak and much easier to tear.

Even thick stacks of notebook paper can be torn easily when they're soaking wet.

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Answer:

4 millllllermeeters jb

Answer:

\(SF_4\)

Explanation:

The first thing would be to calculate the number of moles of each element in the compound.

No of moles of sulfur (S) = mass/molar mass

                                        = 29.68/32.065 = 0.9256

No of moles of fluorine (F) = mass/molar mass

                                       = 70.32/18.998 = 3.7014

Then, let us find the atomic ratio of each of the element in the compound by dividing by the no of moles by the smallest no of mole:

            S            :             F

      \(\frac{0.9256}{0.9256}\) = 1       :       \(\frac{3.7014}{0.9256}\) = 4

Therefore, the empirical formula for the compound is \(SF_4\)

55.03 moles of KCI are produced when 6743 grams of \(KClO_{3}\) decomposes

To determine the number of moles of KCl produced when 6743 grams of \(KClO_{3}\) decomposes, we need to use the concept of molar mass and the balanced chemical equation.

First, let's calculate the molar mass of \(KClO_{3}\)

The molar mass of potassium (K) is approximately 39.10 g/mol.

The molar mass of chlorine (Cl) is approximately 35.45 g/mol.

The molar mass of oxygen (O) is approximately 16.00 g/mol.

So, the molar mass of \(KClO_{3}\) is:

(39.10 g/mol) + (35.45 g/mol) + (3 * 16.00 g/mol) = 122.55 g/mol.

Now, we need to calculate the number of moles of \(KClO_{3}\):

Number of moles = Mass / Molar mass

Number of moles = 6743 g / 122.55 g/mol = 55.03 mol.

According to the balanced chemical equation:

2\(KClO_{3}\) -> 2 KCl + 3 O2,

we can see that for every 2 moles of \(KClO_{3}\), we obtain 2 moles of KCl.

Therefore, the number of moles of KCl produced will be equal to the number of moles of \(KClO_{3}\) since the ratio is 1:1. Thus, 55.03 moles of KCl will be produced.

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When the molecules shown are vaporized, the speed of molecule A will be greatest because of its relatively small size.

When a molecule is vaporized, its size can affect its speed in a couple of ways. The speed of a molecule is related to its kinetic energy, which is influenced by factors such as temperature and mass.

When comparing two molecules that have been vaporized at the same temperature, the smaller molecule will tend to have a higher speed than the larger molecule.

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To determine the tomato's velocity when it hits the ground, we need more information. Specifically, we need the height from which the tomato was dropped and the tomato mass.

Without these details, it is impossible to calculate velocity accurately. The velocity of an object when it hits the ground depends on factors such as the height of the fall, the mass of the object, and any forces acting on it during the fall (such as air resistance).

If you can provide the necessary information, I can help you calculate the velocity of the tomato when it hits the ground.

Answer:

The number of molecules of water us 1.50× 10²⁵ molecules

Explanation:

From N=nL

where L =avogadro number ( 6.02× 10^²³ entities)

The number of the molecules of water =1

n (amount of substance)=25 moles

hence (N) = 25×1×6.02×10^²³

=1.50×10²⁵ molecules of H2O

Answer:

here are what i have so far, im doing this right now

Explanation:

Plate Tectonics Lab Report

Instructions: In the Plate Tectonic lab you will investigate the interactions between continental and oceanic plates at convergent, divergent, and transform boundaries around the globe. Record your observations in the lab report below. Y

Objective(s):  

To look at interactions between continental and oceanic plates, etc.  

Hypothesis:

In this section, please include the if/then statements you developed during your lab activity for each location on the map. These statements reflect your predicted outcomes for the experiment.

Location One: Select three events that you predict will be observed. If I explore two continental plates at a convergent boundary, then I will observe:

• earthquakes  

• mountains

• volcanoes

Location Two: Select three events that you predict will be observed. If explore two continental plates at a divergent boundary, then I will observe:  

• ocean formation  

• volcanoes

• seafloor spreading

you will submit your completed report

ps; you might want to change up the objective.

A geological event is a brief, spatially diverse, dynamic and ongoing occurrence in the history of the Earth.

A geological event is a brief, spatially diverse, dynamic (diachronous), and ongoing occurrence in the history of the Earth that aids in the modification of the Earth system and the production of geological strata. The concept of event stratigraphy initially came up as a way to identify, analyse, and correlate how significant physical and biological events have affected the overall stratigraphical record.

Israel's Dead Sea basin Holocene sediments contain seismic activity. This can be considered a record of a geological event, an earthquake, that altered the strata. Geological events can occur over timescales of order of magnitude, from just a few seconds through millions of years, as well as on a variety of spatial scales, from the local to the globe.

1. Volcanoes and minor earthquakes

2. Volcanoes, earthquakes and fold mountains.

3. Earthquakes and fold mountains.

4. Magma from volcanoes is filled with nutrients that makes land fertile.

Therefore, a geological event is a brief, spatially diverse, dynamic and ongoing occurrence in the history of the Earth.

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