A child is 3 feet 5 inches tall. How tall is the child in meters? Convert feet to inches, add total inches and convert to meters.

The correct answer for emperical and molecular formula = C5H14N2 .

3.23 g x (12.011 / 44.0098) = 0.8815 g carbon

1.865 g x (2.016 / 18.0152) = 0.2087 g Hydrogen

1.58 g x (28.014 / 108.009) = 0.4098 g Nitrogen

1.50 g minus (0.8815 + 0.2087 + 0.4098) = 0.

Convert each element's mass to moles.

0.8815 g/12.011 g/mol = 0.0734 mol carbon

0.2087 g 1.008 g/mol = 0.207 mol Hydrogen

0.4098 g 14.007 g/mol = 0.02926 mol Nitrogen

Step three is to calculate the ratio of molar amounts expressed in the smallest, whole numbers.

0.0734 mol 0.02926 mol = 2.51 carbon

7.07 mol hydrogen = 0.207 mol 0.02926 mol

Nitrogen: 0.02926 mol = 1 Nitrogen: 0.02926 mol = 1

Doubling each value yields C = 5, H = 14.14, and N = 2, resulting in the empirical formula C5H14N2. 

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  3.5 × 10^6 g

according to ideal gas equation, PV = nRT

where, p is pressure v is volume, n is mole of gas, r is gas onstant and t is temperature.

Pressure (p) = 741 Torr = 1 bar

Volume (V) = 5.40 ml= 0.0054litre

Amount of substance (n)  mol = ?

Temperature (T)  44°C= 371kelvin

so by putting all values in equation. PV = nRT

         = 1 ×  0.0054 =n ×8.31 ×371

         n ≈ 0.000002 = 2.0 × 10^-6

now, n is mole of gase,

mole = given mass ÷ molecular mass

given mass = 7.10g

molecular mass = given mass ÷ mole

                         7.10 ÷ 2.0 × 10^-6

                  = 3.5 × 10^6 g

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Considering the defintion of area of a rectangle and definition of density, you obtain the following areas and densities:

a. the area of the rectangle is 9×10⁻¹ cm².

b. the area of the rectangle is 5×10⁻²cm².

c. the density of the substance is 3×10⁶ g/cm³.

d. the density of the substance is 0.2 g/cm³.

A rectangle is a flat geometric figure with four sides, of which two sides that are opposite parallel to each other have the same length and the remaining two have another length.

The area of a rectangle is the product of the two contiguous sides of the rectangle:

Area of a rectangle= a×b

where a and b are the measures of the two sides.

Density  is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

In this case, you know that the rectangle has:

Then, the area of the rectangle can be calculated as:

Area of the rectangle= 3×10¹ cm× 3×10⁻² cm

To multiply numbers in scientific notation, you multiply the numbers that are not powers of 10 and add the exponents that are powers of ten. In this case:

Area of the rectangle= (3× 3)×10¹⁻² cm²

Area of the rectangle= 9×10⁻¹ cm²

Finally, the area of the rectangle is 9×10⁻¹ cm².

In this case, you know that the rectangle has:

Then, the area of the rectangle can be calculated as:

Area of the rectangle= 1×10³ cm× 5×10⁻¹ cm

Solving

Area of the rectangle= (1× 5)×10³⁻¹ cm²

Area of the rectangle= 5×10⁻²cm²

Finally, the area of the rectangle is 5×10⁻²cm².

In this case, you know:

Replacing in the definition of density:

density= 9×10⁵ g÷ 3×10⁻¹ cm³

Solving:

density= 3×10⁶ g/cm³

Finally, the density of the substance is 3×10⁶ g/cm³.

In this case, you know:

Replacing in the definition of density:

density= 4×10⁻³ g÷ 2×10⁻² cm³

Solving:

density= 0.2 g/cm³

Finally, the density of the substance is 0.2 g/cm³.

In summary, you obtain the following areas and densities:

a. the area of the rectangle is 9×10⁻¹ cm².

b. the area of the rectangle is 5×10⁻²cm².

c. the density of the substance is 3×10⁶ g/cm³.

d. the density of the substance is 0.2 g/cm³.

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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 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:

Explanation:density=mass×volume

so your answer will be 14.7×6.6=97.02

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 molecular weight of  urea [tex]((NH_{2} )_{2} CO)[/tex] , a compound used as a nitrogen fertilizer, is 60 amu .

We may determine the atomic weights of the elements using their periodic tables, and we discover that hydrogen has an atomic weight of 1, while that of oxygen is 16. We sum the contributions from each atom to determine the molecular weight of one water molecule, which is 2(1) + 1(16) = 18 grams/mole.

The molecular weight of urea [tex]((NH_{2} )_{2} CO)[/tex] is calculated as ,

The atomic weight of carbon ( C ) = 12

The atomic weight of nitrogen ( N ) = 14

The atomic weight of oxygen ( O ) = 16

The atomic weight of hydrogen ( H ) = 1

[tex]((NH_{2} )_{2} CO)[/tex] = 2 × ( 14 + 2 ) + 12 + 16 = 60 g / mole .

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Food energy is transformed into energy that the body's cells can utilise during cellular respiration. Energy is converted to ATP during cellular respiration, which transforms glucose and oxygen into carbon dioxide and water.

What kind of energy is used by your body to develop and maintain itself?

Your body can move its muscles when you ingest food, which enables you to breathe, walk, run, leap, lift objects, and perform all the other survival-related tasks. The mechanical energy of moving muscles is created from the chemical energy of food.

Your body can move its muscles when you ingest food, which enables you to breathe, walk, run, leap, lift objects, and perform all the other survival-related tasks. The mechanical energy of moving muscles is created from the chemical energy of food.

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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 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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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:

twenty charecter answer

Answer:

Electronegativity is the ability of an atom to attract the shared pair of electrons towards itself *in a molecule*

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

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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Answer:

[tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen

Explanation:

Firstly, we need to know how many atoms of [tex]NH_{3}[/tex] are there in 3 moles of [tex]NH_{3}[/tex].

We know that there is [tex]6.022[/tex] × [tex]10^{23}[/tex] atoms in a mole of any substance.

[tex]6.022[/tex] × [tex]10^{23}[/tex] is Avogadro's Constant

[tex]6.022[/tex] × [tex]10^{23}[/tex] × 3 =  [tex]1.8066[/tex] × [tex]10^{24}[/tex]

Therefore in 3 moles of ammonia, there are [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms.

Next, you should determine how many molecules of an element is present in ammonia.

There is 1 Nitrogen molecule and 3 Hydrogen molecules for every mole of ammonia.

Finally, since we know 3 moles of ammonia contains [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms, we just have to multiply accordingly to get the individual amount of atoms of an element a compound has.

For Nitrogen :

1 × [tex]1.8066[/tex] × [tex]10^{24}[/tex] =  [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms of nitrogen

For Hydrogen :

3 ×  [tex]1.8066[/tex] × [tex]10^{24}[/tex] =  [tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen

Therefore, there is [tex]5.4198[/tex] × [tex]10^{24}[/tex] hydrogen atoms in 3 moles of ammonia.

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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The pressure of butane is 20 P(butane) = 0.77 atm and pressure of P(isobutane) = 19.2 atm

Isomerization is the transformation of a molecule into a different isomer, and it can take one of two forms: cis or trans. Protein isomerization was first described in 1968 as a method of dramatically altering protein conformation by disrupting polypeptide secondary structure.

Isomerism is caused by two main factors: Difference in atom linking mode. Difference in the spatial arrangement of atoms or groups. The difference in the mode of atom linking is one of the two main causes of isomerism. Difference in the spatial arrangement of atoms or groups.

The two main types of isomerism are structural or constitutional isomerism, in which the bonds between the atoms differ, and stereoisomerism or spatial isomerism, which occurs when the bonds are similar but the relative positions of the atoms differ.

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I understand the question you are looking for

For the isomerization reaction:

butane ⇌ isobutane

Kp equals 25 at 500°C. If the initial pressures of butane and isobutane are 20. atm and 0.0 atm, respectively, what are the pressures of the two gases at equilibrium?

A) P(butane) = 20 atm and P(isobutane) = 0.80 atm

B) P(butane) = 19.2 atm and P(isobutane) = 0.77 atm

C) P(butane) = 0.77 atm and P(isobutane) = 19.2 atm

D) P(butane) = 0.80 atm and P(isobutane) = 20. atm

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:

Empirical Formula = Al3O4 .

Explanation:

Mass of Aluminium = 0.3000 g

Mass of Oxygen in oxide = 0.5333 g - 0.3000 g = 0.2333 g

Moles of Aluminium = Mass / MOlar Mass = 0.3000 g / 27 g = 0.01112 moles

Moles of Oxygen = Mass / Molar Mass =0.2333 g / 16 g = 0.01458 moles

Now we will divide each of the molar quantities by the smallest number of moles.

Aluminium : 0.01112 moles / 0.01112 moles = 1

Oxygen : 0.01458 moles/ 0.01112 moles =1.31

Since, the ratio between Al and O is 1:1.31 which is not the smallest whole numebr ratio. SO, we will multiply it by the smallest number to get whole number ratios.

So, Here on multiplying the ratio by 3 ,we get Al : O = 3:4.

The experimental empirical formula of the aluminum oxide is Al₂O₃.

To determine the empirical formula of the aluminum oxide, we need to calculate the mole ratios of aluminum (Al) and oxygen (O) based on the given masses.

Convert the masses of aluminum and aluminum oxide to moles:

Determine the mole ratio of Al to Al₂O₃:

Simplify the mole ratio to obtain the empirical formula:

It is important to note that the given experimental data and the resulting empirical formula are based on the assumption that the reaction went to completion and that the measurements were accurate. Further confirmation and analysis, such as using additional experimental techniques or calculations, may be necessary to verify the empirical formula.

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Answer:

protons: 24

neutrons: 29

electrons: 24

Explanation:

The electronic configuration 1s2,2s2,2p6,3s2  belongs to Magnesium.

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Answer: If you mean converting 58.6 grams to milligrams that would be 58600

Explanation:

A chemical element that has an atomic number less than 58 and an atomic mass greater than 135.6m is barium (atomic no. 56 and atomic mass137.13 ) and lanthanum (atomic no. 57  and atomic mass 135.6).

Barium is an element with the symbol Ba and atomic number 56. It is an alkaline earth metal that is soft and silvery, and it is the fifth element in group 2. Barium is never found in nature as a free element due to its extreme chemical reactivity. Oil well drilling fluid uses barium sulfate as an insoluble ingredient. It is employed as an X-ray radiocontrast agent in a purer form to image the human gastrointestinal tract. Barium compounds that dissolve in water have been employed as rodenticides despite being hazardous.

Chemical element lanthanum has the atomic number 57 and the symbol La. It is a silvery-white, ductile, soft metal that slowly tarnishes when exposed to air. It serves as the eponym for the group of 15 related elements in the periodic table between lanthanum and lutetium, of which lanthanum is the first and prototype. The rare earth elements traditionally include lanthanum.

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The planet that would have a diameter of approximately 12 cm is Saturn.

A scale model is a model which is used to represent another object using a given scale.

Scale models can be used to make small object bigger or larger objects smaller.

Considering the scale model of the planets where  1 centimeter (cm) is equal to 10,000 kilometers (km);

1 centimeter = 10,000 kilometers

12 centimeter = 1.2 × 10⁵ kilometers

The planet with a diameter of approximately 1.2 × 10⁵ kilometers is Saturn.

In conclusion, scale models are used to model objects.

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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:

Na2O is more basic. The reasoning for this is because the basis of periodicity going from bottom to lower basicity is increase.

Answer:copper,stainless steel,iron,diamond,oak,calk,air

Explanation:your metlas is your meterials that absorbs most heat'