For the reaction 2H₂(g) + O₂(g) → 2H₂O(g), what volume of water vapor can be made from 100 grams of oxygen gas and an excess of hydrogen at STP? Please show work.

Answer:2.9 grams

Explanation:i had this question

Answer:

The person above me is correct  

Explanation:

It's D

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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Answer:

c. a proton

Explanation:

A neutron is most equal in mass to a proton.

A neutron is a subatomic particle without any charges on them.

A proton is a subatomic particle with a positive charge.

Answer:

Tin I thunk

Explanation:

I think

Answer:

sn = tin

se = 78.971 u (atomic mass)

s = 16 (atomic number)

The amount, in mL, of the suspension that should be given to an infant weighing 17 lb will be 1.16 mL

0.8 mL of the liquid contains 80.0 mg of the drug.

The recommended dose is 15 mg per kg of body weight

The infant to be given the drug weighs 17 lb.

First, let's convert the weight of the infant to kg.

1 lb = 453.59 g

17 lb =       453.59 x 17/1

                   = 7711.03 g

1000 g = 1 kg

7711.03 g = 7711.03 x 1/1000

               = 7.711 kg

So, the baby's weight is 7.711 kg.

The drug dose for the baby can thus be calculated as:

15 mg x 7.711 = 115.67 mg

But 0.8 mL of the drug contains only 80.0 mg. How many mL will contain 115.67 mg?

                   0.8 x 115.67/ 80.0 = 1.16 mL

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Answer:

n = 0.0088

Explanation:

Molar mass of N2 = 2 x 14 = 28

Moles = mass/molar mass

n = 0.247/28

n = 0.0088...

The number of moles of Nitrogen in 0.247g of Nitrous Oxide is 0.01122 moles.

The question is asking about the quantification of moles of 'N' in a given amount of Nitrous oxide (N2O). The Molar mass of Nitrous oxide (N2O) is approx 44.01 g/mole, and the molar mass of Nitrogen (N) is approx. 14.01 g/mole. Hence, there are 2 moles of N in a single mole of N2O as depicted by the molecular formula. Therefore, first we calculate the number of moles of N2O by the formula: moles = mass/molar mass. Using the given mass (0.247g), moles of N2O = 0.247/44.01 = 0.00561 moles. As there are 2 moles of N in every mole of N2O, the moles of N in 0.247g N2O = 2 * 0.00561 = 0.01122 moles.

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The theoretical yield of alum is 9.66g

Mass of aluminium = 0.55g

Atomic mass = 27g/mol

Number of mole = Mass / Atomic mass

= 0.55g / 27gmol-1 = 2.03 x 10-2 mol

One mole of aluminium produces one mole of alum.

Number of mole of alum = 2.03 x 10-2mol

Molecular weight of alum = 474.4g/mol

Theoretical mass of alum = Number of mole x Molecular weight

= 2.03 x 10-2mol x 474.4gmol-1

= 9.66g

Chemical processes do not always proceed as expected on paper when they occur in the real world. Many factors will work against the creation of more product than is anticipated during an experiment. In addition to spills and other experimental errors, losses resulting from an incomplete reaction, unfavorable side reactions, etc. frequently occur. A measurement that shows how successfully a reaction has occurred is necessary for chemists. The term " theoretical yield" refers to this figure.

The amount of the product that should be produced based on stoichiometry must first be determined in order to compute the percent yield. It is known as the theoretical yield, and it represents the largest amount of product that could be produced from the specified quantities of reactants. The quantity of product that is actually yielded.

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Answer:

iuiwusiwuiqihihiuwusbhwubduywbduywbudb me no esspanlo

Explanation:

niuniniuniuniun

We can see that the specific heat capacity of substance A is greater than that of substance B if the temperature change of A is less than that of B. Option A is correct.

The specific heat capacity is defined as the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. It is a property of the substance and does not depend on the mass of the sample. In the given scenario, both A and B have equal masses, and the same amount of heat is added to each.

The temperature change is different for both substances. To determine we need to consider the formula:

q = m * c * ΔT

where q is the amount of heat added, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Since the mass is the same for both substances and the amount of heat added is the same, we can write:

m * c₁ * ΔT₁ = m * c₂ * ΔT₂

Dividing both sides by mΔT gives:

c₁ = c₂ * ΔT₂ / ΔT₁

The specific heat capacity of substance A is larger than that of substance B if the temperature change of A is less than that of B, according to this equation. Option A is correct.

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Answer: limiting reactant (or limiting reagent): The reactant that determines the amount of product that can be formed in a chemical reaction.

Explanation: Your welcome buddy.

To prepare 12 capsules each containing 80 mg of morphine sulfate and 3.2 mg of naltrexone hydrochloride, the following calculations can be used:

Calculate the total weight of the morphine sulfate and naltrexone hydrochloride: 80 mg + 3.2 mg = 83.2 mg

Calculate the weight of the diluent required: 12 capsules * 83.2 mg/capsule = 999.6 mg

Calculate the volume of the diluent required based on its density (assume a density of 0.9 g/mL for lactose): 999.6 mg / (0.9 g/mL) = 1.11 mL

Calculate the weight of the diluent required based on its volume: 1.11 mL * 0.9 g/mL = 1 g

Calculate the amount of the diluent required based on the sensitivity of the prescription balance: 1 g / (6 mg/g) = 166.7 mg

The amount of the diluent required according to this calculation is 166.7 mg. This amount should be rounded up to the nearest whole number (167 mg) to account for the 4% error tolerance. The final aliquot would therefore contain 167 mg of lactose, 80 mg of morphine sulfate, and 3.2 mg of naltrexone hydrochloride.

Answer:

2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g) + 248kcal

Explanation:

The reaction of the problem occurs as follows:

H2S(g) + O2(g) → H2O(g) + SO2(g)

To balance the reaction we must balance oxygens:

H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g)

To balance the complete reaction:

2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g)

As the energy is evolved, 124kcal are as product in the reactio per mole of H2S. As the balanced reaction contains 2 moles of H2S, the heat evolved is:

124kcal*2 = 248kcal:

2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g) + 248kcal

And this is the balanced equation

Answer:

0.447 pounds

Explanation:

The density of Mercury in grams/mL is 13.55 - I multiplied that by the volume and got approximately 203.25 grams, I then turned it into Kilograms and multiplied by 2.2 lbs / kg.

The volume of the water is  5.11 mL.

Density is a measure of mass per unit of volume of a substance. It is a physical property of matter and is expressed in units of grams per cubic centimeter (g/cm^3).

The density of a substance determines how much of it will occupy a given space, and is a crucial factor in many physical and chemical phenomena, such as buoyancy, phase changes, and thermal conductivity.

We have that;

Volume of the water = ?

Density of the water = 0.9960 g/mL

Mass of the water = 5.097 g

Volume of the water = Mass/Density

= 5.097 g / 0.9960 g/mL

= 5.11 mL

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Answer: F e = 6.31 55.8 = 0.113

Explanation:

Answer: C

Explanation: I got it right.

Answer:

The third option

Explanation:

This reaction is a single replacement reaction because K replaced Mg and a redox reaction because the ion charges of the elements changed from a 0 charge on K to +1 charge, and a +2 charge on Mg to a 0 charge.

Answer:

The answer is the second option.

Answer:

They are made of only one element, so they do not have the components necessary to be a greenhouse gas.

Explanation:

i took the test myself

Answer:

B) System.

Explanation:

It is a group of parts working together. They work together to make a whole, therefore they are all a system when working together.

A system is a collection of components or elements that when taken as a whole display behavior or meaning that its component parts alone do not. Here the correct option is B.

A system can be described as a collection of parts or subsystems working in concert to accomplish a single objective. A disc subsystem, for instance, is a component or element of a computer system.

A system is made up of several interconnected or interacting parts that behave in a predetermined way to generate a coherent whole. A system's boundaries serve as a description of how it interacts with and is influenced by its surroundings.

Thus the correct option is B.

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Answer:

The CCl4 gas would need to be heated to -178.7 °C to have a volume of 2.00 liters at 250 °C.

Step-by-step explanation:

First, we need to calculate the number of moles of CCl4:

\(\sf:\implies n = \dfrac{m}{M}\)

\(\sf:\implies n = \dfrac{75.0\: g}{154.0\: g/mol}\)

\(\sf:\implies n = 0.487\: moles\)

Next, we can use the ideal gas law to solve for the temperature:

\(\sf\qquad\dashrightarrow PV = nRT\)

where:

We need to convert the given temperature of 250 °C to Kelvin:

\(\sf:\implies T = 250 ^{\circ}C + 273.15\)

\(\sf:\implies T = 523.15\: K\)

Now we can plug in the values and solve for T:

\(\sf:\implies (1\: atm)(2.00\: L) = (0.487\: mol)(0.08206\: L\cdot atm/mol\cdot K)T\)

\(\sf:\implies T = \dfrac{(1\: atm)(2.00\: L)}{(0.487\: mol)(0.08206\: L\cdot atm/mol\cdot K)}\)

\(\sf:\implies T = 94.5\: K\)

Finally, we need to convert the temperature back to Celsius:

\(\sf:\implies T = 94.5\: K - 273.15\)

\(\sf:\implies \boxed{\bold{\:\:T = -178.7 ^{\circ}C\:\:}}\:\:\:\green{\checkmark}\)

Therefore, the CCl4 gas would need to be heated to -178.7 °C to have a volume of 2.00 liters at 250 °C.

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The energy of one quantum of blue light that has a frequency of 6.46 x 10¹⁴ s-¹ is 4.28 × 10-¹⁹J.

A photon refers to the quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime.

The energy of a photon can be calculated by using the following formula:

E = hf

Where;

According to this question, blue light has a frequency of 6.46 x 10¹⁴ s-¹. The energy can be calculated as follows:

E = 6.626 × 10-³⁴ × 6.46 x 10¹⁴

E = 4.28 × 10-¹⁹J

Therefore, 4.28 × 10-¹⁹J is the energy of the blue light.

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Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the  pH of a 0.01 M acetic acid.

Any hydrogen that comprises a material capable of giving a proton (a hydrogen ion) to another chemical is defined as acid. A base is indeed a molecule or ion that can receive a hydronium ion from just an acid.

1)Because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. The pH value of stronger acid is lower.

2)CH\(_3\)COOH + H\(_2\)O  ⇄ CH\(_3\)COO⁻+  H\(_3\)O⁺

 0.01             0               0

 -x              +x                +x

 0.01-x           +x        +x

Ka=[ CH\(_3\)COO⁻][H\(_3\)O⁺]/[CH\(_3\)COOH]

1.8×10⁻⁵ = [x][x ]/[  0.01-x ]

x=1.34×10⁻³

pH = -log[H⁺]

     =  -log[1.34×10⁻³]

     =2.88

Therefore, because HCl is a stronger acid than acetic acid, the pH of 0.01M acetic acid has greater value than the pH of 0.01M HCl. 2.88 is the   pH of a 0.01 M acetic acid.

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Fossil fuels are essential part of the power generation in the world. They are easily combustible and more reliable and cheaper. However, the burning of fossil fuels releases toxic gases  to the environment.

Fossil fuels are fuel generated from the decomposition materials. Petroleum, coal, natural gas  etc. are fossil fuels which are excavating from the earth.

Fossil fuels are non-renewable sources of energy. Hence, as the existing fossil sources are exhausted no more fossil fuel can be made. It is cheaper, reliable and easy to use.

However, the toxic hydrocarbon gases released from the burning of fossil fuels make the environment polluted. Therefore, overuse of fossil fuel definitely rise the atmospheric pollution.

Its use over the next 50 years, will increase the global warming and more of it will be exhausted.

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Answer:

because it is

Hydrochloric acid can cause damage if it comes into contact with your lungs, eyes, stomach, or skin. If hydrochloric acid comes into contact with your skin, it can cause: chemical burns. scarring.

Option C tert-butanol, Kf = -9.1. is the correct answer. Tert-butanol, Kf = -9.1 will achieve the largest change in freezing point.

Tert-butanol is an alcohol with a hydroxyl group substituted at position 2 in the tertiary alcohol isobutane. It serves as a xenobiotic metabolite for humans. It comes from an isobutane hydride. There is information on the natural substance tert-butanol, which is found in Psidium guajava. Tert-butyl alcohol has a strong alcohol odor and is an oily, colorless liquid. mixes and floats in water. produces obnoxious vapor. 78 °F is the freezing point. (USCG, 1999). The compound's canonicalized name is 2-methylpropan-2-ol, and its atomic weight is 74.12 with 5 heavy atoms.

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Complete Question

When 2.36g of a nonvolatile solute is dissolved in 100g of solvent, the largest change in freezing point will be achieved when the solvent is            .? options (A) paradichlorobenzene, kf=7.10. (B). water, Kf=1.86. (C). tert-butanol, Kf=9.1. (D) All are expected to have the same freezing point.

Answer:

\(Fe_2O_3\)

Explanation:

The formula of Rust is Fe2O3 and also known as ferric oxide or iron oxide

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

OAmalOHopeO

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

Answer:

water and ammonia (nh3)

Explanation:

NH3 + H2O => NH4OH