Fill in the following table.

Answer:

roughly about 246.1?

Explanation:

Answer:

The answer is 2939 moles.

Explanation:

To obtain the moles from these values you should apply the ideal gas formula because in a scuba tank all gas that you have inside is the air:

PV= nRT. (1)

Thus the moles number, n, is:

n = PV/ RT (2)

Where:

P is pressure: 195 atm;

V is volume: 350 L,

R is gas constant: 0,082 atm×L / mol×K

And T is temperature: 10°C, that must be converted in k, thus:

10°C + 273,15 = 283,15 K

Replacing these values in (2) the moles number, n, is:

2939 moles of air

Answer:

c. 800 K, 0.1 atm

Explanation:

Good luck in AP Chem

Answer:

C. Chloroform and alcoholic KOH

Explanation:

Secondary and tertiary amines do not react with CHCl3 and alc. KOH generates isocyanide, whereas primary amine does.

Energy levels are the electron shells where electrons are found at a fixed distance from the nucleus of the atom. The atom could emit 6 different wavelengths.

A wavelength is a distance between the adjacent crests in wave signals propagated in a system. Wavelength [tex](\rm \lambda )[/tex] is in inverse relation to the frequency of the wave.

When an electron jumps from energy level 1 to 2, 1 to 3, and 1 to 4 one wavelength each is present. Hence, making the total wavelength to be 3, in transition from the first energy level.

Similarly, from energy levels, 2 to 3 and 2 to 4, a total of 2 wavelengths, and from energy levels 3 to 4 one wavelength is produced.

So the total different wavelengths of the radiation that can be emitted will be 3 + 2 + 1 = 6.

Therefore, 6 different wavelengths of radiation will be emitted by the atom.

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A 50 L baby pool has a chlorine concentration of 0.200 M. If 20 L of water evaporated on a hot summer day, 3333 M is the final concentration of the pool.

Molarity is defined as the moles of a solute per litres of a solution.

Molarity is also known as the molar concentration of a solution.

A 50 L baby pool has a chlorine concentration of 0.200 M.

So, the volume of the baby pool is 50L with a concentration of 0.200 M.

[tex]V_1[/tex]=50 L

[tex]M_1[/tex]=0.200 M

If 20 L of water evaporated on a hot summer day, the volume of the baby pool will be 30L and we have to find the concentration of the baby pool after evaporation.

[tex]V_2[/tex]=30 L

[tex]M_2[/tex]=?

Apply the formula,

[tex]M_1V_1[/tex]=[tex]M_2V_2[/tex]

50 L X 0.200 M1 = 30 L X M2

[tex]M_2[/tex] = 0.3333 M

Hence, 0.3333 M is the final concentration of the pool.

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The two factors must be considered when predicting whether two substances will dissolve in each other are type of bonds and size of the molecules are two factors.

Solubility is the ability of solute particles to dissolve in any solvent, and solubility is directly proportional to the dissolving ability of the solute.

Solubility of any substance depends on the type of the bond present in the solute molecule i.e. polar or non polar. And it is also depends on the size of the solute as size defines the surface tenssion of the substance.

Hence type of bonds and size of the molecules are two factors.

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Answer:

2KClO3(s) = 2KCl(s) + 3O2(g)

Explanation:

2KClO3(s) = PRODUCT

2KCl(s) + 3O2(g)=REACTENT

Answer:

A box of ideal gas has consists of light particles and heavy particles (the heavy ones have 16 times the mass of the light ones).

Answer:

14.625 gm

Explanation:

(x / 58.5 gm) / (500ml /1000 ml) = .5         x = 14.625 gm

Answer: There are 31.8 grams of copper.

Explanation:

From the calculation as shpwn in the procedure below, the equilibrium constant of the substance is 6.9 * 10^-15.

The equilibrium constant for the solubility of aa solid in solution is called the solubility product Ksp. The Ksp shows the extent to which a solid is dissolved in solution.

Given that;

Fe(OH)2 ⇄Fe^2+ + 2(OH)^-

Ksp = s(2s)^2

We have s as 1.2 x 10^-5 M

So

Ksp = 4s^3

Ksp = 4( 1.2 x 10^-5 )^3

Ksp = 6.9 * 10^-15

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HNO3+Ca(OH)2= Ca(NO3)2+H2O.Answer:

Explanation:hope this helps <3

Answer:

Explanation:

1) For every 2 moles of methane consumed, 8 moles of carbon dioxide are produced. This means that if 4 moles of methane are consumed, the reaction can occur twice, meaning 8(2)=16 moles of carbon dioxide will be produced.

2) For every 2 moles of methane consumed, 10 moles of water are produced. This means that the reaction can occur twice, and hence 10(2)=20 moles of water will be produced.

3) For every 10 moles of water produced, 13 moles of oxygen gas are consumed. This means that if we want 126 moles of water, we need the reaction to occur 12.6 times, and thus 13(12.6)=163.8 moles of oxygen gas will be consumed.

They are extremely small infront of earth size.

Answer: The atomic symbol represent an isotope that undergoes radioactive decay to produce Pb-206 can be, Polonium (Po).

Answer:

153 g CO₂

Explanation:

To begin, the reaction is not in its simplest form. The coefficients can be divided by two. However, this will not change the answer.

CH₄ + 2 O₂ --> CO₂ + 2 H₂O

You can find the grams of CO₂ by taking the moles of O₂, using the mole to mole ratio of O₂ to CO₂ (via the coefficients), then converting moles of CO₂ to grams. You will need the molar mass of CO₂ since you want to convert it from moles to grams. This is calculated using the values on the periodic table. The ratios should be written in a manner that allows for the cancellation of units. The answer should have 3 sig figs.

12.011 g/mol + 2(15.998 g/mol) = 44.007 g/mol CO₂

6.95 moles O₂          1 mol CO₂           44.007 g CO₂
----------------------  x  -------------------  x  -------------------------  = 153 g CO₂

                                  2 mol O₂             1 mol CO₂

Answer: 100, less

Explanation:

At constant temperature, if the volume of the sample of gas increases to the given value, the pressure decreases to 0.92atm.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given the data in the question question;

We substitute our given values into the expression above to determine the new pressure.

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

P₂ = ( 1.53atm × 0.03L ) / 0.0501L

P₂ = 0.0459Latm / 0.0501L

P₂ = 0.92atm

Therefore, at constant temperature, if the volume of the sample of gas increases to the given value, the pressure decreases to 0.92atm.

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Answer:

8.0 mol/L

Explanation:

To do this problem you need to use C₁V₁=C₂V₂. C=concentration and V=volume. (Note: you dont want to use M₁V₁=M₂V₂ because this is measuring mass not concentration).

So, V₁= 1.0L

C₂=2 Mol/L

V₂= 4 L

C₁ is unknown.

you would plug this equation in like this:

(C₁)(1.0 L)=(2.0 Mol/L)(4.0L).

Do algebra to get C₁ alone.

C₁=[tex]\frac{(2.0 mol/L)(4.0L)}{1.0L} =8.0 mol/L[/tex]

The liters cancel out and you are left with mol/L or M

I hope this helps! good luck :)

Molarity is the ratio of the moles and the volume of the solution in liters. The molarity of the 0.2 mole salt is 0.1 M.

The molarity of the solution is the molar concentration of the moles of the solute dissolved in a liter of solution. It is given as,

[tex]\rm Molarity (M) = \rm \dfrac{\text{moles of solute (n)}}{\text{volume (V) in liters}}[/tex]

Given,

Moles (n) of the salt = 0.2 mol

The volume of the solution (V) = 2 L

Substituting values in the above equation:

[tex]\begin{aligned} \rm M &= \dfrac{0.2}{2}\\\\&= 0.1 \;\rm M\end{aligned}[/tex]

Therefore, 0.1 M is the molarity of the sample.

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Answer:

Explanation:

Methanes boiling point would be higher than water's

Water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

Hydrocarbon methane ( CH4 ) is a main constituent of natural gas. Because methane is a greenhouse gas (GHG), its presence in the atmosphere has an impact on the planet's climate and temperature.

A range of anthropogenic (influenced by humans) and natural sources release methane into the atmosphere.

The significant difference in polarity between oxygen and hydrogen causes the water molecules to be dipolar. As a result, a strong hydrogen bond forms between the H and O of nearby water molecules, packing the water molecules so closely together that water is a liquid at ambient temperature.

Thus, water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

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Answer:

black hole in ourter space for the first time the scientific research

and development of the following layers lethargic

Explanation:

STUDY CORRECTION.

The time in years taken for the sample to be reduced to 1.00 mg of Rn-222 from 36g is 0.57 years.

Total time for the decomposition of any element will be calculated by using the following equation as:
T = (t)ⁿ, where

t = half life time = 3.80 days

n = number of half lives

Let we calculate number of half lives as:
1- 36 → 18

2- 18 → 9

3- 9 → 3

4- 3 → 1.5

Almost 4 half lives are required, on putting values on the above equation, we get

T = (3.80)⁴

T = 208.51 = 208 days (approx) = 0.569 = 0.57 years. (1 yr = 365 days)

Hnece reqiuired time is 0.57 years (approx).

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Answer:

Negative feedback caused his pancreas to stop secreting insulin.

Explanation:

i took the test its correct

Answer:

0.5 M

Explanation:

To find the concentration, you take the moles and divide that by the liters;

[tex]\frac{moles}{liters} =\frac{25 moles}{50 L} =0.5M[/tex]

I hope this helps!

Answer:

Aquatic plants that live underwater have leaves with large air pockets inside that allow the plant to absorb oxygen from the water.

Answer:

. Plant adaptations are changes that help a plant species survive in its environment. Aquatic plants that live underwater have leaves with large air pockets inside that allow the plant to absorb oxygen from the water. The leaves of aquatic plants are also very soft to allow the plant to move with the wave.

Explanation:

Answer:

Iodine has an atomic number of 53 meaning 53 electrons and it gain 1 electron when reacting with a metal. We know the element is a non metal as is gains an electron

Ion is fluoride (F⁻), gaining 1 electron for a stable electron structure like noble gas neon (Ne).

Fluorine (F) is an element with 9 electrons in its neutral state. By gaining 1 electron, it forms the fluoride ion (F⁻) with 10 electrons. This allows the ion to achieve a stable electron configuration, following the octet rule.

Fluoride ions are highly reactive due to their electron configuration and tend to form ionic compounds. They play essential roles in various chemical and biological processes, such as dental health, where fluoride compounds are added to prevent tooth decay.

Fluoride ions' stability and reactivity make them important in various industrial and scientific applications, including the production of fluorine-containing compounds used in refrigerants, plastics, and pharmaceuticals.

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Answer:

#1 Question answer =The global atmospheric circulation model can explain weather patterns and climate by describing how air currents move.

Explanation:

simple but still works.

Answer:

The global atmospheric circulation model can explain weather patterns and climate by describing how air currents move.

Explanation:

this is my answer

Answer:

B. a military unit

Explanation: