A 5.00-L tank contains helium gas at 1.50 atm. What is the pressure of the gas in mmHg

Answer:

Chlorine Iodine is a compound made out of one Chlorine molecule and one Iodine molecule

Explanation:

Answer:

What do you mean by this?

Explanation:

Answer:

6.48 M

Explanation:

M₁V₁ = M₂V₂

Step 1: Define

Molarity₁ = 2.70 M

Volume₁ = 1.20 L

Molarity₂ = unknown

Volume₂ = 0.500 L

Step 2: Substitute and Evaluate for M₂

(2.70 M)(1.20 L) = (M₂)(0.500 L)

3.24 = (M₂)(0.500 L)

M₂ = 6.48 M

Therefore, 86.1 grams of calcium sulfate can dissolve in 75.0 L of pure water at equilibrium.

Only a small amount of calcium sulphate is available. The equilibrium constant, also referred to as the solubility product, is written as Ks for this kind of dissolution process. Ks = 4.9  10  6 for this reaction. K s = 4.9  10  6.

The formula for calcium sulphate's solubility product constant is:

Ksp = [Ca2+][SO42-]

The solubility product constant, Ksp, is equivalent to the product of the molar concentrations of Ca2+ and SO42- at equilibrium:

[Ca2+][SO42-] = Ksp

The following calculation can be used to determine the molar solubility of calcium sulphate:

Ksp = [Ca2+][SO42-] = x²

where x is the molar solubility of calcium sulfate.

Therefore, x = √(Ksp) = √(7.10 x 10⁻⁵) = 8.43 x 10³M

m = n × M

n = V × C

Substituting the given values, we get:

n = 75.0 L × 8.43 x 10⁻³ mol/L = 0.632 mol

m = 0.632 mol × 136.1 g/mol = 86.1 g

To know more about calcium sulfate visit:-

https://brainly.com/question/7962933

#SPJ9

Answer:

where is the structure the picture

Explanation:

???

Answer:

decrease

Explanation:

because they're not the same

Answer:

Explanation:

3 CuCl2 (aq) +2 K3PO4 (aq) -->   6 KCl(aq) + Cu3(PO4)2(s)

Answer:

its the 3rd one

Explanation:

Answer:

it will be all water and it needs to cool of

Answer:

A

Explanation:

If we intend to achieve the anti addition of Hex-3-yne to yield (E) Hex-3-ene, the we must use Na/NH3. The first step of the reaction involves the transfer of an electron from sodium to the alkene; this yields a radical anion. Strong electron replusion ensues between the single electron and the lone pair on the carbon. This now forces the both to be found at a trans position to each other and this is the basis of the stereochemistry of the product.

Secondly, the radical anion abstracts a proton from ammonia. Another sodium atom transfers an electron leading to the formation of a vinyl carbanion, the alkyl groups are now trans to each other.

This carbanion now abstracts a proton from ammonia and the final product is formed.

Answer:

H2O i think.................................

NiCO3(s) + H2SO4(aq) ---> NiSO4(aq) + CO2 (g) + H2O (l). The reaction results in the formation of carbonic acid, H2CO3, which breaks down into water and carbon dioxide gas.

When magnesium carbonate and diluted sulfuric acid H2SO4 are combined, magnesium sulfate, water, and carbon dioxide gas are produced. The following is the balanced chemical equation for the reaction of magnesium carbonate with diluted sulfuric acid: MgSO4 aq + H 2 O + CO 2 g = H 2 SO4 aq.

As a result, sodium carbonate and sulfuric acid react to generate sodium sulfate, which has the chemical formula Na2SO4. Water and carbon dioxide are the other byproducts. So, in the aforementioned reaction, sodium sulfate, water, and carbon dioxide were all produced.

to know more about chemical equations here:

brainly.com/question/30087623

#SPJ1

Answer:H2SO4 or B

Explanation: I TOOK THE TEST  

Answer:

2HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+2KCl(aq)

Explanation:

HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+KCl(aq)

2HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+2KCl(aq)

H-1*2=2                                      H-2

Cl-1*2=2                                     Cl- 1*2=2

K -2                                           K-1*2=2

C- 1                                           C-1

O - 3                                        O-3

The hydrogen-rich fuel cell offers advantages in terms of efficiency, environmental impact, operating time, refueling speed, weight, size, and lifespan when compared to conventional electrochemical cells like the lead-acid battery.

The hydrogen-rich fuel cell offers several advantages over conventional electrochemical cells like the lead-acid battery. Here are some of the key advantages:

1. Higher Efficiency: Hydrogen fuel cells have higher energy conversion efficiencies compared to lead-acid batteries. Fuel cells can convert chemical energy directly into electrical energy with minimal loss, while lead-acid batteries have inherent energy losses due to factors such as internal resistance and heat dissipation.

2. Clean and Environmentally Friendly: Hydrogen fuel cells produce electricity through the reaction of hydrogen and oxygen, with water being the only byproduct. They do not produce harmful emissions or contribute to air pollution, making them a cleaner and more sustainable power source compared to lead-acid batteries, which require the use of chemicals like sulfuric acid.

3. Longer Operating Time: Fuel cells have longer operating times compared to lead-acid batteries. Lead-acid batteries have a limited capacity and need to be recharged frequently, while fuel cells can continuously generate electricity as long as there is a supply of hydrogen.

4. Faster Refueling: Refueling a fuel cell is faster compared to recharging a lead-acid battery. Fuel cells can be refueled by replenishing the hydrogen supply, which can be done relatively quickly. In contrast, lead-acid batteries require a longer time to recharge, typically hours, depending on the battery's capacity and charging rate.

5. Lighter Weight and Compact Size: Hydrogen fuel cells have a higher energy density compared to lead-acid batteries, meaning they can store more energy in a smaller and lighter package. This makes fuel cells more suitable for applications where weight and space are critical, such as in portable devices or electric vehicles.

6. Longer Lifespan: Fuel cells generally have a longer lifespan compared to lead-acid batteries. Lead-acid batteries can experience degradation over time due to factors like sulfation, which can reduce their overall capacity and lifespan. Fuel cells, on the other hand, can provide consistent performance over an extended period with proper maintenance.

These advantages make fuel cells a promising technology for various applications, including transportation, stationary power generation, and portable electronics.

for more questions on fuel cell

https://brainly.com/question/14122421

#SPJ8

Answer:

which property is least helpful in identifying a sample of matter is (B) VOLUME

Explanation:

volume depend on the amount of substance present and are not useful in the identification of a sample of matter. volume is an extensive property so it is not useful identifying the sample of matter.

This problem is providing us with the mass and density of a sample of liquid magnesium as 0.015 g and 1.738 g/cm³, respectively. Thus the volume, in microliters, of this same is required and found to be 8.63 μL according to the following calculations:

In science, density is defined as the degree of compactness of a substance and is calculated with:

\(\rho =\frac{m}{V} \)

Thus, given both the mass and density, we can solve for the volume as shown below:

\(V=\frac{m}{\rho } \)

By plugging in, we obtain the answer in cm³ first:

\(V=\frac{0.015g}{1.738g/cm^3} =0.0086cm^3\)

Then, we convert it to microliters as follows:

\(0.0086cm^3*\frac{1L}{1000cm^3} *\frac{1x10^6\mu L}{1L}=8.63\mu L \)

Learn more about density: https://brainly.com/question/952755

Answer:

1. The core electrons are 10

2. The valence electrons are 8

Explaination:

Core electrons are electrons located in  the inner shells of and atom.

Valence electrons are electrons located on the outermost shell of an atom

From the question given above, we obtained:

Ar (18) => [Ne] 3s²3p⁶

Recall

Ne (10) => 1s² 2s²2p⁶

Therefore,

Ar (18) => [1s² 2s²2p⁶] 3s²3p⁶

From the above illustration,

Inner shell (core shell) => 1s² 2s²2p⁶

Outermost shell (valence shell) => 3s²3p⁶

1. Determination of the core electrons

Inner shell (core shell) => 1s² 2s²2p⁶

Core electrons = 2 + 2 + 6

Core electrons = 10

2. Determination of the valence electrons

Outermost shell (valence shell) => 3s²3p⁶

Valence electron = 2 + 6

Valence electron = 8

Answer:

10 core electrons

8 valence electrons

Explanation:

Answer:

It loses electrons.

Explanation:

When an atom is oxidized in a redox reaction, it simply loses electrons and the oxidation number increases.

An oxidized atom implies that oxidation has occurred; oxidation can be defined as:

D. It loses electrons

Here's how it works!

Oxidation occurs when an atom, molecule, or ion loses one or more electrons. In the process of oxidation, the oxidation state of the chemical species increases. Originally, the term was used to describe when oxygen caused electron loss in reactions. I hope that helps you!

Answer:

............................................................................................................................

Explanation:

because ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

As the class is of 1 hour and  and each student uses for 6 minutes so in 1 hour 10 students will use the balance.

A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, and weight balances.

The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum. One plate holds an object of unknown mass (or weight), while known masses are added to the other plate until static equilibrium is achieved and the plates level off, which happens when the masses on the two plates are equal.

Learn more about balance,here:

https://brainly.com/question/1173599

#SPJ1

This is challenging to provide an exact prediction for the melting and boiling points. Experimental factors, impurities, and other variables can influence these values.

To predict the melting and boiling points for methylamine (CH3NH2), we can consider the differences in molecular structure and intermolecular forces compared to ethane. Methylamine has a nitrogen atom in place of one carbon atom in ethane.

Methylamine exhibits hydrogen bonding due to the presence of the nitrogen atom, which can form hydrogen bonds with other methylamine molecules. Ethane, on the other hand, lacks a hydrogen atom bonded to an electronegative atom, so it does not participate in hydrogen bonding.

Hydrogen bonding is stronger than the London dispersion forces present in ethane. Consequently, methylamine is expected to have stronger intermolecular forces and thus higher melting and boiling points compared to ethane.

Considering this, we can predict that the melting point of methylamine will be higher than -183 °C, the melting point of ethane. Similarly, the boiling point of methylamine will be higher than -89 °C, the boiling point of ethane.

However, without specific experimental data or a detailed analysis of methylamine's properties.

For more such questions on melting

https://brainly.com/question/25074953

#SPJ8

Answer:

B.) The molecule is a branched hydrocarbon.

Explanation:

A hydrocarbon is any molecule made up of carbon and hydrogen exclusively. A methyl- prefix denotes the presence of a methyl group (CH₃), which is situated as a branch off of a hydrocarbon carbon.

Answer:

B

Explanation:

it is the correct composition of water

Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.

In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.

In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.

Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.

Learn more about Chemical reaction, refer to the link:
https://brainly.com/question/22817140

#SPJ1

Answer:

C. Hydrosphere for 7

B. Biosphere for 8

Explanation: I am not sure about the rest of them.

The concept combined gas law is used here to determine the new pressure of the gas. This law states that the ratio between the product of pressure-volume and temperature of a system remains constant.

The combined gas law is the combination of Boyle's law, Charles's law and the Avogadro's law. These laws relate one thermodynamic variable to another holding everything else constant.

Here volume is constant, so the equation is:

P₁ / T₁ = P₂ / T₂

T₁  = 298 K

T₂ = 798 K

Pressure is:

P₂ = P₁ T₂/T₁

P₂= 2.5 × 798 / 298

P₂ = 6.69 atm

To know more about combined gas law, visit;

https://brainly.com/question/18848289

#SPJ1

1) Convert milliseconds to seconds.

1 s = 1000 ms

72 ms is equal to 0.072 s.