calculate the volume the gas will occupy if the pressure is increased to 1.89 atm while the temperature is held constant.

Answer: Calculate the Volume of Chlorine Gas (Cl₂) at STP That Will React With 5.00 Grams of Iron.

Explanation:

The balanced chemical equation for the reaction between iron and chlorine gas is:

2 Fe(s) + 3 Cl₂(g) → 2 FeCl₃(s)

To calculate the volume of chlorine gas that will react with 5.00 grams of iron, we need to use stoichiometry.

First, we need to convert the mass of iron to moles using its molar mass:

5.00 g Fe × (1 mol Fe / 55.85 g Fe) = 0.0893 mol Fe

Next, we can use the mole ratio between iron and chlorine gas from the balanced equation to find the number of moles of chlorine gas:

0.0893 mol Fe × (3 mol Cl₂ / 2 mol Fe) = 0.134 mol Cl₂

Finally, we can use the ideal gas law to calculate the volume of chlorine gas at STP:

PV = nRT

where P = 1 atm, V is the volume we want to calculate, n = 0.134 mol, R = 0.08206 L·atm/(mol·K), and T = 273 K.

Solving for V:

V = nRT/P = (0.134 mol)(0.08206 L·atm/(mol·K))(273 K)/(1 atm) = 3.44 L

Therefore, the volume of chlorine gas at STP that will react with 5.00 grams of iron is 3.44 L.

{I Hope This Helps! :)}

Step 1

The reaction:

CaCO3 + heat => CaO + CO2 (completed and balanced)

-----------------------

Step 2

Information provided:

Actual yield = 0.53

The number of moles of aluminum powder needed to produce 203.7 grams of manganese is 5 moles.

Heat, Mn, and Al2O3 are produced when aluminum powder and manganese dioxide are heated.

\(3MnO_{2} + 4Al - > 3Mn + 2Al_{2} O_{3} + Heat\)

The balanced chemical equation in this situation indicates that there are 3 moles of manganese and 4 moles of aluminum involved in the reaction, which results in a 3:4 mole ratio.

You may make use of this mole ratio by calculating how many moles of aluminum are required to react with the 203.7g of Manganese. So,

Firstly, the mass of Aluminium has to be taken out

Let the mass be considered x.

So, the number of moles of Aluminium = x/27

Number of moles of Manganese = 203.7/54

Hence, the mass x will be,

\(x = 4 *203.7 * 27 / 3 * 54\)

\(x = 135.8g\)

Hence,  the number of moles of Aluminium is = 135.8/27 = 5 moles.

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Answer:

In this reaction, 38.1 grams of copper will be produced.

Answer:

When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion. Losing an electron results in a positive charge, so atom ion is a cation

Explanation:

Answerd the question : ion

To determine if the ring is made of gold, we can calculate the expected heat transfer based on the specific heat of gold and compare it to the actual heat transfer observed in the experiment.

The heat transfer equation is given by:

q = m * c * ΔT

Where:

q = heat transfer

m = mass of the object

c = specific heat capacity

ΔT = change in temperature

Given:

m = 6.00 g

c (specific heat of gold) = 0.128 J/g°C

ΔT = 75°C - 25°C = 50°C

Calculating the expected heat transfer using the specific heat of gold:

q_expected = m * c * ΔT

= 6.00 g * 0.128 J/g°C * 50°C

= 38.40 J

The expected heat transfer based on the specific heat of gold is 38.40 J.

Comparing this with the actual heat transfer observed in the experiment, which is 38.7 J, we see that they are very close. This suggests that the ring is likely made of gold, as the measured heat transfer aligns with the expected heat transfer based on the specific heat of gold.

Therefore, based on this experiment, it is likely that the ring is indeed made of gold.

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Answer:

???what metal????????????

Answer:

Yes.

Explanation:

NH4Cl + H2O = NH4+ + HCl (equation 1). Cl- + H2O = H+ Cl- +H2O (equation 2). The chloride (Cl-) first associates with water ( H2O) to form hydrochloric acid (HCl) and the dissociation of HCl produces hydrogen ions (H+).

These charts typically guide you through a series of questions based on the physical and chemical properties of the mineral, such as color, hardness, cleavage, and reaction to acid.

By answering each question, you can narrow down the possibilities and eventually identify the mineral. Another helpful tool is a handheld mineral identification kit, which includes common minerals and their properties for comparison to the unknown mineral. Observe the physical properties of the mineral, such as color, luster, hardness, cleavage, and fracture, using a magnifying glass or a microscope.

Test the mineral's hardness using a mineral hardness scale, such as Mohs scale, which ranks minerals based on their ability to scratch one another.Test the mineral's streak, which is the color of the powdered mineral, by rubbing the mineral against an unglazed porcelain plate.

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The 95% margin of error for the mean increase in blood pressure that one would expect for cigarette smokers over the time span indicated by the experiment is ±1.98 (rounded off to two decimal places).

The mean increase in blood pressure that one would expect for cigarette smokers over the time span indicated by the experiment can be estimated by using the formula;μ = x ± z(\(a^{2}\)) * σ/√n

Where;μ is the population mean increase.x is the sample mean increase.z(\(a^{2}\)) is the z-scoreα is the level of significanceσ is the population standard deviationn is the sample size.

Substituting the given values into the formula;μ = 9.1 ± 1.96 * 5.5/√37= 9.1 ± 1.98

The mean increase in blood pressure that one would expect for cigarette smokers over the time span indicated by the experiment lies between 7.12 to 11.08.

Hence, the estimated mean increase is between 7.12 to 11.08 millimeters of mercury.

The 95% margin of error can be calculated using the formula;

Margin of error (E) = z(\(a^{2}\)) * σ/√n

Margin of error (E) = 1.96 * 5.5/√37

Margin of error (E) = 1.98 (approximated to two decimal places).

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Answer:

D. Catalyst

Explanation:

Because a Catalyst is a substance that causes or accelerates a chemical reaction without itself being affected.

Answer: D. Catalyst

Explanation:

Answer:

they both have gravity

Explanation:

Answer:

gravity

Explanation:

Water(h2o), carbon dioxide(co2), and oxygen(o2) can move through a plasma membrane by simple diffusion.

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Stoms or tornadoes cause about ten times more damage a year, on average, as hurricanes. Storms often cause more complete destruction than hurricanes because of their large size, long-term duration, and their varied potential for damage to property.

Storms can be very severe storms, hurricanes often last a long time, cover most of the earth and cause great damage. The wind from the strongest calves is stronger than the one from the strongest storms.

Have a nice day <3

Answer:

a for apple b for ball

Explanation:

ooakakka

density of the pumice.

density= mass/ volume (d= m/v)

= 225/236.6

= 0.951g/ml

so, the density of pumice is 0.951g/ml.

\({\boxed{{ formula :}}} \)

\( →\bold{Density = \frac{mass}{volume} }\)

\({\boxed{{ Given :}}} \)

\(→\bold{Mass = 225 g }\)

\(→\bold{ Volume = 236.6 ml}\)

\({\boxed{{ Solution :}}} \)

\(→\bold{Density = \frac{mass}{volume} }\)

\(→\bold{ Density = \cancel{ \frac{225 g}{236.6 ml}} = 0.951 g/ml}\)

The density of pumice is 0.951 g/ ml .

A strategy known as Carbon Capture and Storage would remove some of the CO₂ from smokestack emissions of coal-burning power and industrial plants and convert it to a liquid to be pumped under pressure into underground storage sites.

Climate change is one of the most important environmental challenges facing humanity. Large amounts of carbon dioxide (CO₂) are released into the atmosphere through the combustion of fossil fuels, such as coal, and this contributes greatly to the rise in global temperature. For this reason, scientists and environmental organizations have sought a way to reduce CO₂ emissions. One such strategy involves carbon capture and storage (CCS).

Carbon capture and storage involves extracting CO₂ from the exhaust gases of coal-fired power plants and other industries. The CO₂ is separated from the other gases and converted into a liquid through a process known as CO₂ capture. The liquid can then be stored in subway sites at pressure level. This helps reduce CO₂ emissions, as the CO₂ is not released into the atmosphere, but is stored in the ground.

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Energy from various sources is stored, transmitted, and utilised in a number of ways. Electrical energy, for example, is often stored in batteries and delivered via power lines.

It is then utilised to power various gadgets ranging from lightbulbs to laptops. Solar energy is similarly stored in solar panels and transmitted via electrical connections. This energy is then converted into electricity and utilised to power homes, companies, and other purposes.

Furthermore, natural gas, oil, and other fossil fuels are transported through a pipeline network and used to generate electricity and heat buildings. Nuclear energy is also stored, transferred, and used to create power via a network of pipelines. Finally, wind energy is stored in enormous batteries and distributed via electrical wires.

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Answer:

Explanation:

Reactivity of halogens basically decreases. Imagine this halogens are these people who need love, they need to attract metals who are hot.

The number of shells increases as you go down the group, so they become fatter. Fluorine is the hottest , chlorine is the second hottest, the rest are fat-fattest. The plus size elements (Bromine, Iodine) find it easier to lose an electron, because they are "insecure", the attraction between protons and valence electrons are not high, because they are so far away. Metals need their partners do be stiff so that they can give away their electrons. Halogens are not metals, they need to attract them, so it is ideal here to not lose electrons.

Hope that explanation helps, phew!

Answer:

Hydrochloric acid + sodium → sodium chloride + water

NaOH +HCl → H2O and NaCl

Explanation:

salt is a neutral ionic compound. Let's see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH +HCl → H2O and NaCl.

The change in entropy and the change in enthalpy must be known in order to assess the spontaneity of a chemical reaction or physical process at a particular set of conditions.

To assess the spontaneity of a chemical reaction or physical process at specific conditions, it is necessary to consider both the change in entropy and the change in enthalpy. These two factors provide crucial information about the thermodynamic properties of the system.

The change in entropy (∆S) represents the measure of the system's disorder or randomness. If ∆S is positive, it indicates an increase in disorder, while a negative ∆S suggests a decrease in disorder. The change in enthalpy (∆H) represents the heat transfer during a reaction or process. A positive ∆H indicates an endothermic process, while a negative ∆H suggests an exothermic process.

To determine the spontaneity of a reaction or process, one can use the Gibbs free energy (∆G) equation: ∆G = ∆H - T∆S, where T is the temperature. If ∆G is negative, the reaction or process is spontaneous under the given conditions.

Therefore, to assess the spontaneity of a chemical reaction or physical process, it is essential to know both the change in entropy and the change in enthalpy.

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1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr. the correct answer is D.

There are 24 electrons in all, according to the electron arrangement. A neutral atom will contain 24 protons if it has 24 electrons. The element is determined by its proton count. Chromium, symbol Cr, is the 24th element.

Since Cr contains 24 protons and the +2 charge would result in the nucleus having 26 protons, Cr²⁺ is invalid.  Cu is made up of 29 protons. The copper would be Cu⁵⁺ as there are only 24 electrons. Cu²⁺ was rejected for the same reason.

Therefore, 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵ is the electronic configuration of Cr.

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Answer:

it's the uneven heating of the region's of the troposphere by the sun the sun warms the air at the equator more than the air at the poles. it causes convention currents large scale patterns of winds that move heat and moisture around the globe. as air rises expands and cools water vapor condenses and clouds develop.

Explanation:

I hope this helps :)

The balanced chemical equations are as  follows:

14. C₂H₄ + 3 O₂ -> 2CO₂ + 2H₂O

15. 2NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. 3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. 3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

Balanced equations are equations of chemical reactions that ensure that the law of conservation of mass is true.

In a balanced equation, the number of atoms of each element on both sides of the equation is equal.

The given chemical equations are balanced as follows;

14.  Place 3, 2, and 2 before O₂, CO₂, and H₂O respectively.

C₂H₄ + 3 O₂ -> 2 CO₂ + 2 H₂O

15. Place 2 in front of NaHCO₃.

2 NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

16. Place 3, 2, and 2 in front of Cl₂, NaBr, and NaCl respectively.

3Cl₂ + 2NaBr -> 2NaCl + Br₂

17. Place 3, 2, 3, 5, and 3 in front of Na₂S, NaCl, H₂O, NaCl, and O₂ respectively.

3Na₂S + 2NaCl + 3H₂O -> 5NaCl + H₂S + 3O₂

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Answer:17.47m

Explanation:

Explanation:

Molarity is defined as moles of solute per liters of solution.

c

=

n

V

Glacial acetic acid is actually anhydrous acetic acid, which implies that the acetic acid is not actually dissolved in a solvent and therefore is not ctually a solute.

However, you can still calculate its molarity based on the number of moles of you get per liter of glacial acetic acid.

To do that, start with a sample o

1.000 L

of glacial acetic acid. You know that at

25

∘

C

, glacial acetic acid has a density of

1.049 g/mL

, which tells you that every mililiter of glacial acetic acid has a mass of

1.049 g

.

This means that the mass of the sample will be

1.000

L

⋅

1000

mL

1.000

L

⋅

1.049 g

1

mL

=

1049 g

To find how many moles you get in the sample, use the given molar mass, which tells you how many grams of acetic acid you get per mole

1049

g

⋅

1 mole CH

3

COOH

60.05

g

=

17.469 moles CH

3

COOH

Now that you know the volume of the sample and how many moles it contains, you can say that

c

=

17.469 moles

1.000 L

=

17.47 M

I'll keep the number of sig figs given for the density of glacial acetic acid.

Answer:

the answer is C, 30g

Answer: If you're looking for the type of bond, you need to find the difference in electromagnetically. The electromagnetically of Br is 2.96 and Si is 1.9. Subtracting the two will give you the difference of the previously mentioned (1.06).

For the bond to be POLAR the difference should fall between 0.5 and 1.6

For the bond to be NON-POLAR the difference should be 1.6

Answer:

Explanation: