If a train travels from San Antonio to El Paso at a speed of 90 mph, how far will it
have traveled in 3 hours 30 minutes? Remember to convert the time! *

Hydrolysis occurs when Fe2O3 is dissolved in water, resulting in the formation of Fe(OH)3 and H+ ions. For every Fe in Fe2O3, there are 1.5 O. Thus, the iron content of Fe2O3 is reduced.

Water in the liquid state serves as the solvent in an aqueous solution. In other words, water molecules surround and integrate solute (dissolved) ions and molecules into their web of bonds. Following that, the dissolved species dispersed all over the water.

Aqueous solutions are made up of water and one or more dissolved materials. Solids, gases, or other liquids can all dissolve in an aqueous solution.

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Question:

How Many Particles Fe2O3 Will Produce In An Aqueous Solution (In Water).

Answer:

isotope phosphorus-31

Explanation:

Answer:

a) 0.154 moles of N2

b) 9.27 × 10^22 molecules

c) 4.312 g

Explanation:

a)

1 mole of N2 contains 6.02 × 10^23 atoms

x moles of N2 contains 9.26 × 10^22 atoms

x= 9.26 ×10^22/6.02 × 10^23

x= 1.54 ×10^-1

x= 0.154 moles of N2

b)

1 mole of N2 contains 6.02 × 10^23 molecules

0.154 moles of N2 contains 0.154 moles × 6.02 × 10^23 = 9.27 × 10^22 molecules

c)

Molar mass of the nitrogen gas= 28 gmol^-1

Number of moles of nitrogen gas = 0.154 moles

Number of moles = mass/molar mass

0.154 moles= mass/28 gmol^-1

Mass= 0.154 moles × 28gmol^-1

Mass= 4.312 g

A solution containing a nonvolatile solute will have a lower vapor pressure than the pure solvent and the change in vapor pressure is directly proportional to the fraction of the solute in the solution.

The addition of a nonvolatile solute to a liquid solvent results in a lowering of the vapor pressure of the solvent.

The change in the vapor pressure is directly proportional to the mole fraction of the solute in the solution.

Therefore, a solution containing a nonvolatile solute will have a lower vapor pressure than the pure solvent and the change in vapor pressure is directly proportional to the fraction of the solute in the solution.

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Answer:  The volume at 600 K will be 0.050 L.

Explanation:

Given: \(V_{1}\) = 0.025 L,    \(T_{1}\) = 300 K

\(V_{2}\) = ?,             \(T_{2}\) = 600 K

Formula used is as follows.

\(\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\)

Substitute the values into above formula as follows.

\(\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\\frac{0.025 L}{300 K} = \frac{V_{2}}{600 K}\\V_{2} = 0.050 L\)

Thus, we can conclude that the volume at 600 K will be 0.050 L.

When a substance is entering a phase change, the gain or loss of heat is a result of energy gained or lost in forming or breaking intermolecular interaction.

The constant temperatures occur when a substance is undergoing a phase transition.  If heat is removed from a substance , such as in freezing and condensation , then the process is exothermic . In this instance , heat is decreasing the speed of the molecules causing then move slower.

In chemistry and thermodynamics, phase transitions (or phase changes) are the physical processes of transition between a state of a medium, identified by some parameters, and another one, with different values of the parameters.

Commonly the term is used to refer to changes among the basic states of matter: solid, liquid, and gas, as well as plasma in rare cases.

For example, a phase of a thermodynamic system and the states of matter have uniform physical properties. During a phase transition of a given medium, certain properties of the medium change, often discontinuously, as a result of the change of external conditions, such as temperature, pressure, or others.

For example, a liquid may become gas upon heating to the boiling point, resulting in an abrupt change in volume. The measurement of the external conditions at which the transformation occurs is termed the phase transition. Phase transitions commonly occur in nature and are used today in many technologies.

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Answer:

1. Heat from the pan transfers directly to the oil. 2. Heat from the pan transfers directly to the oil. 3. heated by the radiation in the microwave.

Explanation:

Answer:

\(\huge\boxed{\sf t = 50 \ seconds}\)

Explanation:

Acceleration = a = 0.4 m/s²

Initial Speed = \(V_i\) = 20 m/s

Final Speed = \(V_f\) = 40 m/s

Time = t = ?

\(\displaystyle a =\frac{V_f-V_i}{t}\)

Rearranging formula for t

\(\displaystyle t =\frac{V_f-V_i}{a} \\\\t = \frac{40-20}{0.4} \\\\t = \frac{20}{0.4} \\\\\boxed{t = 50 \ seconds}\\\\\rule[225]{225}{2}\)

Answer:

50 seconds

Explanation:

Equation used :

v = u + at

Given :

⇒ a = 0.4 m/s²

⇒ u = 20 m/s

⇒ v = 40 m/s

Solving :

⇒ 40 = 20 + 0.4t

⇒ 0.4t = 20

⇒ t = 20/0.4

⇒ t = 50 seconds

Before administering nitrous oxide/oxygen sedation, the patient is usually given a detailed explanation of the procedure, including its risks and benefits.

They are also required to sign an informed consent form. The dentist or dental hygienist administering the sedation will check the patient's vital signs and ensure that they are in good health to receive the sedation.

During the procedure, the patient is given a nasal mask that delivers a mix of nitrous oxide and oxygen.

After the procedure, the patient is usually monitored until the effects of the sedation have worn off. The patient is advised not to drive or operate heavy machinery for at least 24 hours after the procedure.

It is also recommended to avoid consuming alcohol or taking medications that may interact with the sedative for a certain period after the procedure.

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\(\huge\underline\mathbb\pink{♡Your Answer♡}\)

Formula mass of CaCO3 is

40 + 12 + 3-100amu....

100g CaCO3 = 1 mole..

50g of CaCO3 = 1÷ 100x 5 = 0.5mole...

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Hope it helps you..

Thanks...

Answer:0.61L

Explanation:

P1V1/n1T1=P2V2/n2T2

n1=n2 T1=T2

Therefore;

P1V1=P2V2

225×1.4=515×V2

V2=0.61L

N.B: Increase in pressure leads to decreases in volume (Boyle's law)

Answer:

B. Biosphere

Explanation:

Answer:

1.92

Explanation:

The mass of nitrogen collected is mathematically given as

M-N2=0.025gram

Question Parameters:

A sample weighing 2.000g

the liberated NH3 is caught in  50ml pipeful  of H2SO4 (1.000ml   =  0.01860g Na2O).

T=26.3c=299.3K

Pressure=745mmHg=745torr

Pressure of N2=745-25.2=719.8torr

Generally, the equation for the ideal gas   is mathematically given as

PV=nRT

Therefore

719.8/760=45.6/1000=n*0.0821*299.3

n=0.00176*14

In conclusion, the Mass of N2

M-N2=0.00176*14

M-N2=0.025gram

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Answer:

true

Explanation:

Answer:66.3L= 66300.00cm³

Explanation:The cubic centimeters equal to the Liters multiplied by 1,000.

Answer:

66,300 cubic centimeters

Explanation:

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

Answer:

You'll find someone. There's a someone for everyone.

Explanation:

And I know how you feel.

Answer:

the answer is c) oxygen and D) glucose. Read the question correctly. it says what is *produced* in photosynthesis and *used* in cellular respiration.

Explanation:

photosynthesis produced oxygen and glucose to which cellular respiration uses (glucose and oxygen) to produce carbon dioxide and water. so carbon dioxide and water ARE NOT the answer to this.

also I took the test so yeah

The molecules that are produced in photosynthesis and then used in cellular respiration include the following: oxygen and glucose.

PHOTOSYNTHESIS:

CELLULAR RESPIRATION:

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The two hydroxy groups in ethylene glycol combine with water to produce hydrogen bonds. Better hydrogen bonding amount and intensity, as well as greater water solubility.

In its most fundamental form, what is a hydrogen bond?

Hydrogen bonds are a particular type of dipole-dipole attraction between molecules, as opposed to forming a covalent bond with a hydrogen atom. It results from the attraction of a hydrogen atom covalently bound to a very electronegative atom, such as an N, O, or F atom, and another extremely electronegative atom.

An example of a hydrogen bond

For instance, in the highly electronegative water molecules (H2O), hydrogen is chemically joined to the oxygen atom. As a result, the interaction between the hydrogen atoms in water molecules known as dipole-dipole

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From the stoichiometry of the reaction, carbon is in excess and 5.856 g s left over.

The reaction can be written as; 4C(s) + 5H2(g) -----> C4H10(g)

Number of moles of C =  13.45 g/1 2g/mol = 1.12 moles

If 1 mole of hydrogen occupies 22.4 L

x moles of hydrogen occupies  17.65 L

x = 0.79 moles

Now;

4 moles of carbon reacts with 5 moles of hydrogen

1.12 moles of carbon reacts with  1.12 moles * 5 moles/4 moles

= 1.4 moles of hydrogen

Hence hydrogen is the limiting reactant here and carbon is in excess.

If 4 moles of carbon reacts with 5 moles of hydrogen

x moles of carbon reacts with 0.79 moles of hydrogen

x = 0.632 moles

Number of moles of carbon unreacted =  1.12 moles -  0.632 moles

= 0.488 moles

Mass of carbon unreacted = 0.488 moles * 12 g/mol

= 5.856 g

Volume of butane produced is obtained from;

5 moles of hydrogen produces 1 mole of butane

0.79 moles of hydrogen produces 0.79 moles *  1 mole/ 5 moles

= 0.158 moles

1 mole of butane occupies 22.4 L

0.158 moles of butane occupies 0.158 moles * 22.4 L/ 1 mole

= 3.53 L

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Answer:

A

B

A

B

B

Explanation:

B - MIXTURE

A - COMPOUND

The volume of  a 125. Ppm phosphate stock solution we need to transfer to a 50. 0 ml volumetric flask to prepare a 30. 0 ppm stock solution is 12 ml.

A stock solution is the primary compound of known concentration from which we can prepare its solutions of different dilutions.

If we know the concentration and volume of a solution say it is C1 and V1 respectively we can determine the volume or concentration of a second solution prepared from the first solution or needed to react with the first solution with the relation written below:

C1V1 = C2V2

Given the volume and concentration of solution to be prepared is 50 ml and 30 ppm respectively. Thus, the volume of stock solution of 125 ppm is calculated as follows:

Volume = (30 ppm × 50 ml ) /125 ppm

             = 12 ml

Hence, the volume of stock solution is 12 ml.

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Answer:

Digestive

Explanation:

An acid-base reaction occurs whenever an acid (such as vinegar, lemon juice, sulfuric acid, or muriatic acid) is combined with a base (such as baking soda, soap, ammonia, or acetone).

Salt and water are produced after these reactions neutralize the acid and base. You consume common meals every day, which also include characteristics of bases or acids. Let's imagine that you brush your teeth before having a wonderful tall glass of orange juice for the morning.

On the pH scale, orange juice and oranges themselves are both extremely acidic. Oranges with a lot of citric acids have a low pH. Because they are sour, like lemons and vinegar, acids are familiar to you from daily life. You might not be as familiar with bases. Baking soda and salt are the typical basis of daily living.

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Answer:

4 3 2 is the answer because it is balanced that way

Answer:

Electronegativity is the measure of the ability of an atom to attract electrons to itself. So, higher electronegativity helps atoms take more control over shared electrons creating partial negative regions and partial positive regions which result in dipoles that cause polarity.

Explanation:

(pls mark me brainliest)

Answer:Electronegativity is the measure of the ability of an atom to attract electrons to itself. ... So, higher electronegativity helps atoms take more control over shared electrons creating partial negative regions and partial positive regions which result in dipoles that cause polarity.

Explanation:hope this helps and if im wrong im sorry :)

Answer:

Q1:

    A. an educated guess

Q2:

    A. Do many teenagers encounter stress

Explanation:

Q2's a bit tricky, it's either A or B.

Sorry about that, but I hope this helps a bit.