How many moles of Ne are contained in a 5.00 L tank at 155°C and 2.80 atm?

Answer:

ice creem cone  candy

Explanation

Maalox is the trade name for an antacid and antigas medication used for relief of heartburn, bloating, and acid indigestion in which

4 ml contains

= 320mg of aluminum hydroxide

= 320mg of magnesium hydroxide

= 32mg of simethicone

recommended doses = 4 times * 2 tea spoon = 8 tea spoon/ day

given = 1 tea spoon = 5 ml

8 tea spoon = 40 ml

hence,

amount of aluminum hydroxide = 320/4 * 40 = 3200mg = 3.2 g

amount of magnesium hydroxide = 320/4 * 40 = 3.2 g

amount of  simethicone = 32/4 * 40 = 320 mg = 0.32g

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Answer:

C

Explanation:

it would be a lot more easier if you could show the animation

But nevertheless your answer would be

C Four seasons occur on Earth.

Answer: The answer is letter C.

Explanation:

There are four seasons on our planet Earth . These four seasons are, Spring, Summer, Autumn, And Winter (my personal favorite.)

These four seasons only occur, based on which side of the sun our continent is on. Yes we could literally be facing the sun, but the sun isn’t really directing heat now. (Don’t fact check that.) but anyways, hopefully this helps. And remember, the earth take 365 days to orbit the sun. Which is 12 months, and each season has 3 months each to roam the earth.

The mass of the object with a density of 2.44g/ml and a volume of

25ml is 61g

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The oxide contains 22.24% O by mass, so the identity of the metal as a chemical symbol is lead (Pb).

A substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions (cations) are called metals.

Mass percentage of oxygen in the oxide, i.e.,

ω(O) divided by 100 ω(O)

=22.24% ÷ 100%.

Mass percentage of oxygen in the oxide, i.e .ω(O) = 0.2224

Now the mass percentage of oxygen in the oxide multiplied by 100 ten we get the mass of oxygen in the oxide. If we take 100 grams of compound:

1) m(O) = ω(O) * 100 g.

Mass of oxygen in the oxide, i.e. m(O) = 0.2224 * 100 g.

Mass of oxygen in the oxide. i.e., m(O) =22.24g

Amount of oxygen, i.e.,

n(O) = mass of oxygen in the oxide ÷ molar mass of oxygen.

n(O) = m(O) ÷ M(O) amount of oxygen

n(O) = 22.24g ÷ 16 g/mol,

amount of oxygen i.e. n(O) = 1.39 mol

Mass of metal in the oxide, i.e., m(M) = 100 g - 22.24 g.

Mass of metal in the oxide i.e., m(M) = 77.76g

Now we to find the molar mass of metal oxide,

Molar mass of the metal :

= mass of metal in the oxide ÷ amount of oxygen(M)

= m(M) ÷ n(M). M(M)

= 77.76 g ÷ 1.39 mol.

Molar mass of the metal will be 5.94 g/mol.

Therefore, The identity of the metal is lead (Pb).

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Answer:

0.1295 m^2

Explanation:

just divide 1295 by 10000

Answer:

[tex] \boxed{8.9 \: g /cm^3}[/tex]

Explanation:

Given:

Mass of sample= 39.2 g

Volume occupied= 4.4 cm³

To find:

Density=?

Solution:

Formula to be used,

[tex]\sf Density = \frac{mass}{volume} [/tex]

[tex]\sf Density = \cancel{ \frac{39.2}{4.4} } = 8.9 \bar{0} \bar{9} \: g /cm^3[/tex]

The rounder figure answer upto tenths place can be written as 8.9 g/cm³

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The density of a solid object that has a mass of 1.62 lb and a volume of 190 mL is 3.87g/mL.

Density is the measure of the mass of matter contained by a unit volume. It can be calculated by dividing the mass of the substance by its volume.

According to this question, a solid object is said to have a mass of 1.62 lb and a volume of 190 mL.

1 pound = 453.592 grams

1.62 Ibs is equivalent to 734.82 grams

Density of the solid object = 734.82 grams ÷ 190 mL

Density = 3.87g/mL

Therefore, the density of a solid object that has a mass of 1.62 lb and a volume of 190 mL is 3.87g/mL.

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Answer:

protons: 24

neutrons: 29

electrons: 24

Explanation:

The lines are violet and blue respectively.

We know that the energy of the photon could be obtained by the use of the equation;

E = hf

E = energy

h = Plank's constant

f = frequency

For the first line;

E = 6.6 * 10^-34 Js * 3.45 x 10^14 Hz = 2.3 * 10^-19 J

Given that;

E = hc/λ

λ = hc/E

λ = 6.6 * 10^-34 * 3 * 10^8/2.3 * 10^-19

λ = 8.61 * 10^-7 m or 861 nm

The color is violet

For the second line;

E = 6.6 * 10^-34 Js * 6.53 xx 10^14 Hz

E = 4.3 * 10^-19 J

E = hc/λ

λ = hc/E

λ =  6.6 * 10^-34 * 3 * 10^8/4.3 * 10^-19

λ = 4.60 * 10^- 7 m or 460 nm

The color is blue

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A typical aspirin tablet contains 321 mg of the active ingredient acetylsalicylic acid and 321 mg makes 0.321 g.

The nonsteroidal anti-inflammatory medicine (NSAID) aspirin, often referred to as acetylsalicylic acid (ASA), is used to treat a variety of inflammatory disorders by lowering pain, fever, and/or inflammation. These conditions include Kawasaki disease, pericarditis, and rheumatic fever.

Long-term usage of aspirin is also used to help those at high risk avoid further heart attacks, ischemic strokes, and blood clots. Effects of pain or fever often start within 30 minutes. Aspirin functions similarly to other NSAIDs but also inhibits platelet function.

Your doctor should be consulted when deciding whether or not to take aspirin because it depends on your cardiovascular risk, according to Wong. While aspirin is often taken safely by many people, it can also result in life-threatening stomach, intestinal, and brain bleeding.

1 mg = 1/1000 g

so,

321 mg = 321/ 1000g

            = 0.321g

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Answer:

down below

Explanation:

Judy Hopps was one of the smaller prey animal while the others were predators or bigger prey animals. Meaning, she was tiny and in some minds, was easier to take down or may not be able to do the job as well as the bigger animals. Also, she was, less noticeably, the only female prey animal.

The correct answer is The mass ratio of S to O in SO divided by the mass ratio of S to O in SO2 is 2 :1.

When two elements can combine to form two or more different compounds, the mass of one element compared to the fixed mass of the other will always be in a ratio of small whole numbers.

As we all know,

Oxygen mass = 16 g

Sulfur mass = 32 g

Sulfur mass in SO = 32 g

The mass of oxygen in SO is 16 g.

Sulfur to oxygen mass ratio in SO =..... (1)

Sulfur mass in SO2 = 32 g

Oxygen mass in SO2 = (2 16)g = 32 g

Sulfur to oxygen mass ratio in SO2 =..... (1)

The S/O ratio in SO is 2: 1.

The S/O ratio in SO2 is 1: 1.

Taking the ratios 1 and 2, we get:

the mass ratio of S to O in SO to mass ratio of S to O in SO2 is 2 : 1

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Line spectrum of hydrogen atom in Lyman series is formed​ 'absorbs energy and gets excited'

The electron in a hydrogen atom absorbs energy and gets excited and the electron jumps from a lower energy level to a higher energy level and when it comes back to its original state, it gives out energy which forms a hydrogen spectrum and the line in Lyman series is formed​ by electronic transition and all the wavelengths in the Lyman series are in the ultraviolet band and this are seen in ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 where n is the principal quantum number and the lowest energy level of the electron.

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The number of mole of Cl in 1 mole of Mn₄(ClO₄)₃ is 3.00 moles

From the formula of the compound, Mn₄(ClO₄)₃ the following were obtained:

From the formula, we can see that 3 moles of Cl are present.

Thus, 1 mole of Mn₄(ClO₄)₃ will contain = 1 × 3 = 3.00 moles of Cl

Therefore, we can conclude that 1 mole of Mn₄(ClO₄)₃ contains 3.00 moles of Cl

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Ferric chloride combines with water in a reversible reaction to produce ferric hydroxide and hydrochloric acid as shown.

[tex]FeCl_{3}[/tex] + 3H₂O → [tex]Fe(OH)_{3}[/tex] +  3HCI

The reaction which must occur at the same time as the formation of ferric hydroxide are given below .

[tex]FeCl_{3}[/tex]  → Fe · + Cl ·

So , option C is correct one .

The water ionizes to hydrogen and hydroxide ions and the ferric chloride in the water ionizes to iron, or ferric and chloride ions. As a result, the solution becomes more hydrogen ion-rich than it was before the precipitation, which causes the solution to become acidic.

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Answer:

The real answer is Fe(OH)3 + 3HCI - FeCl3 +3H2O

Explanation:

I took the test and this was the correct answer.

Answer: Protects your eyes from chemical splashes, Must be worn during all labs, from start to lab checkout, in which chemicals, glass or heating of substances is involved. No exceptions!!

The machine is accurate and precise

Hence , option D is correct one .

Accuracy is the capacity of an instrument to measure the precise value. In other words, it refers to how closely the measured value resembles a reference or genuine value. Small readings can be taken to increase accuracy. The calculation's inaccuracy is decreased by the little reading.

The precision of a substance is defined as the degree to which two or more measurements agree with one another. It is incredibly precise but not always accurate to measure something if you weigh it five times and get 3.2 kg each time. Accuracy is not necessary for precision.

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Answer:

The definition and all examples are correctly mentioned only one mistake is spotted which is transfer of energy as heat included in Intensive Property which is wrong.

Explanation:

Intensive Property: Intensive properties are those properties which are Independent of the amount substance present.

For e.g. The melting point of ice on standard temperature & pressure is constant i.e. 0°C.

1 gram of ice will melt at 0°C so will be 1 kilogram ice. Hence melting point & similarly boiling point also is an Intensive Property.

before talking about Density let's understand Extensive properties.

Extensive Property: Extensive properties are those properties which are Dependent of the amount substance present.

for e.g. Volume, Weight, Mass, Length, Energy, Enthalpy, Entropy etc.

When One extensive divided by another extensive Property then perticular that property of substance is also intensive property.

Now we know that,

[tex] \sf Density = \frac{Mass}{volume} [/tex]

Where mass & volume both are extensive properties, hence density is an intensive property.

Ability to conduct electricity is called as Thermal Conductivity which is an intensive property.

The thermal conductivity of a perticular material does not change it varies material to material.

Transfer of energy as heat, let's have quick look at heat & temperature relation given by,

[tex]C = \frac{Q}{\Delta T} [/tex]

Where C is specific heat capacity which is an intensive property & specific heat is the ratio of added heat to the change in temperature & Heat is an Extensive property.

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Answer:

skill

Explanation:

Answer: The more air a fish swim bladder contains, the higher the fish will suspend or float in the war.

Explanation:

The density of a nugget of gold which occupies 5.64 ml of water and weighs 108.85 g is 19.29 g/cm^3.

The density of a gold nugget can be calculated by using the following formula:

Density of nugget = Mass of gold nugget/Volume occupied by gold nugget

Here,

the mass of gold is given to be 108.85 grams and the volume occupied by gold is given to be 5.64 ml or 5.64 cm^3.

Putting these values in the above equation

Density = 108.85 g / 5.64 cm^3

Density = 19.29 g/cm^3

Thus, the density of a nugget of gold which occupies 5.64 ml of water and weighs 108.85 g is 19.29 g/cm^3.

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Each species is a separate type of organism.

Therefore, Each species is not considered a group.

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Answer:

This would be 3S^1.

Explanation:

It  would be 3s^1 because that is how the orbitals are formed.

It would be form lowest to highest: s,p,d,f.

Then it would go to highest, 2 =s, 6=p, d =10, f= 14.

So, it would be: 1s2, 2s2, 2p6, 3s2.

Since 3s2 isn't on here, then 3s1 would become the answer.

Answer:

1.49 x 10⁻¹⁴ moles Ni

Explanation:

To find the amount of moles in the sample, you need to multiply the amount of atoms by Avogadro's Number. This conversion is a ratio that describes how many atoms there are per every 1 mole.  It is important to arrange the ratio in a way that allows for the cancellation of units (atoms should be in the denominator). The final answer should have 3 sig figs like the given value.

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

 9.00 x 10⁹ atoms Ni                     1 mole
---------------------------------  x  --------------------------------  =  1.49 x 10⁻¹⁴ moles Ni
                                              6.022 x 10²³ atoms

Answer:To find the volume of a rectangular prism, we multiply the length of the prism by the width of the prism by the height of the prism.


honeslty

Explanation:

Yes, DHMO (Dihydrogen monoxide) can be lethal (deadly) to humans in small doses. It's true.

Dihydrogen monoxide is a known cause of thousands of deaths each year and contributes significantly to the millions of dollars in environmental and property damage. Dihydrogen monoxide is known to pose several risks, including:

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A chemical reaction of exothermic kind releases energy in the form of heat and light.

We are given that reactant releases 27.4kJ/g for every gram of reactant consumed.

We are required to find number of grams of reactant that has been consumed

It is also given that 880J of energy is released

Hence, grams of reactants consumed is 880/27.4gm

Disclaimer:

It has been asked by the student to leave the question as mathematical expression.

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