How many atoms of each element are in the following compound:
C3H5(NO3)3

Answer:

scientific community's consensus on the human causes of global climate change

Explanation:

The molar mass of the gas is 65.3 g/mol

The number of mole of the gas can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by RT

n = PV / RT

n = (1.04 × 0.854) / (0.0821 × 302)

n = 0.0358 mole

Molar mass = mass / mole

Molar mass = 2.34 / 0.0358

Molar mass of gas = 65.3 g/mol

Learn more about ideal gas equation:

https://brainly.com/question/4147359

Answer:

65.3 g/mol

Explanation:

use the ideal gas law with molar mass formula

M = mRT/PV

m= 2.34 g

V = 0.854 L

T = 302k

P = 1.04

R = 0.0821

just plug those in and solve

Answer:

Explanation:

There are 3 types of plastids :-

1) Chloroplasts:- The green plastids which contain chlorophyll pigments for photosynthesis.

2) Chromoplasts:-The coloured plastids for pigment synthesis and storage.

3) Leucoplasts:- The colourless plastids for monoterpene synthesis found in non- photosynthetic parts of the plants.

They are of three types:-  

a) Amyloplasts- stores starch.

b) Proteinoplasts-  stores proteins.

c) Elaioplasts- stores fats and oils.

2.5 n of the following most closely represents the weight of the aluminum block .

How much "stuff" is contained in a specific quantity of space is determined by its density. For instance, a brick of the harder, lighter metal gold (Au) will be thicker than a slab of the heavy element lead (Pb) (Au). Styrofoam blocks are less dense than bricks. Mass per given volume serves as its definition.

Density is an important concept because it allows us to forecast which molecules will float but which will dive in a liquid. An object will frequently float as long as its density is less than that of the liquid.

To know more about Density visit:

https://brainly.com/question/15164682

#SPJ4

Answer: Density is 0.39g/ml and will float

Explanation:

Density is mass/volume : 1.95g/5.0ml = 0.39g/ml

This sample will float on water because a object with a density less than 1g/cm3 will float. 1 cubic centimeter equal 1 ml.

Sugar is a simple carbohydrate consisting of carbon, oxygen, and hydrogen molecules which are linked by covalent bonds.

The chemical covalent bonds are a type of chemical bond in which atoms that differ in their electronegativity share electrons to maintain cohesion i.e., intramolecular cohesion, while sugar molecules may interact by glycosidic bonds.

Therefore, with this data, we can see covalent bonds bind atoms in the sugar molecule while glycosidic bonds are those required to connect different sugar and thus form a complex macromolecule or polysaccharide.

Learn more about chemical covalent bonds here:

https://brainly.com/question/3447218

#SPJ1

Answer:

it's D

Explanation:

I hope this helps you

Answer:

In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms) and tracking these dimensions as

Explanation:

The mass of the trifluoroacetic acid sample is 111.9 grams.

Trifluoroacetic acid, with the chemical formula C2HF3O2, consists of two carbon atoms, one hydrogen atom, and three fluorine atoms. To calculate the mass of the sample, we need to consider the atomic masses of each element present.

The atomic mass of carbon (C) is approximately 12.01 g/mol, hydrogen (H) is approximately 1.01 g/mol, and fluorine (F) is approximately 19.00 g/mol. We also need to consider the stoichiometry of the compound, which tells us the ratio of each element in the formula.

From the chemical formula C2HF3O2, we can determine that there are two carbon atoms present. Given that the sample contains 50.9 g of carbon, we can calculate the molar mass of carbon in the sample:

Molar mass of carbon = (50.9 g) / (2 mol) = 25.45 g/mol

Next, we can calculate the molar mass of trifluoroacetic acid by summing up the molar masses of all the elements:

Molar mass of C2HF3O2 = (2 * 12.01 g/mol) + (1 * 1.01 g/mol) + (3 * 19.00 g/mol) + (2 * 16.00 g/mol) = 111.92 g/mol

Finally, to find the mass of the trifluoroacetic acid sample, we can use the molar mass and the given mass of carbon:

Mass of trifluoroacetic acid sample = (Molar mass of trifluoroacetic acid) * (Mass of carbon / Molar mass of carbon)

Mass of trifluoroacetic acid sample = 111.92 g/mol * (50.9 g / 25.45 g/mol) = 111.92 g

The mass of the trifluoroacetic acid sample is calculated to be 111.9 grams based on the given mass of carbon and the chemical formula of the compound.

Learn more about  trifluoroacetic ,visit;

https://brainly.com/question/14669376

#SPJ11

The birth rate is obtained to be 1.36 births per year

The birth rate is typically calculated as the number of births per 1,000 people in a given population over a specific period of time.

The formula that we can use so as to obtain the birth rate can be given as;

Birth rate = (Number of births / Population) x 1,000

We can find the birth rate from;

5.7 x 10^3 / 4.2 x10^6  x 1,000

1.36 births per year

This calculation provides an estimate of the number of births per 1,000 people in the population over a specific time period.

Learn more about birth rate:https://brainly.com/question/14148819

#SPJ1

An oxidation number is a concept in chemistry that represents the hypothetical charge that an atom would have if all the bonds in a compound were purely ionic. It is used to keep track of electron transfer in chemical reactions and identify redox (reduction-oxidation) reactions.

In a redox reaction, there is a transfer of electrons from one reactant to another. The reactant that loses electrons is said to be oxidized, while the reactant that gains electrons is said to be reduced. The oxidation number of an atom helps determine whether it is undergoing oxidation or reduction.

The rules for assigning oxidation numbers are as follows:

In an elemental state, atoms have an oxidation number of zero.

For monatomic ions, the oxidation number is equal to the charge of the ion.

In compounds, some elements have commonly observed oxidation numbers. For example, oxygen is typically assigned an oxidation number of -2, and hydrogen is typically assigned an oxidation number of +1.

The sum of oxidation numbers in a neutral compound is zero, and in an ion, it is equal to the ion's charge.

By comparing the oxidation numbers of an element in a reactant and a product, one can determine if there has been an increase or decrease in the number of electrons associated with that element. This indicates whether oxidation or reduction has occurred.

However, it's important to note that except for ionic compounds, oxidation numbers do not have any physical significance. They are simply a tool to aid in understanding electron transfer in chemical reactions. In covalent compounds, where electrons are shared rather than transferred, oxidation numbers are hypothetical charges and do not reflect the actual charge or distribution of electrons.

In summary, oxidation numbers are used to identify redox reactions by tracking the transfer of electrons. They provide a convenient way to determine if an element has been oxidized or reduced. However, their significance is limited to ionic compounds, as they do not represent the true charge or electron distribution in covalent compounds.

To know more about oxidation visit:

https://brainly.com/question/13182308

#SPJ11

The reaction when silver metal is coated with red color after the reaction is known as displacement reaction.

The silver colored metal is coated with red color after reaction so the coating is a single element which is displaced by the silver colored reactant and the silver colored metal will form a compound because it displaces the red colored metal. So the products are a single metal and a compound and the reaction is displacement reaction.

Thus, the reaction describes a displacement reaction.

To learn more about metal check the link below:

https://brainly.com/question/25597694

#SPJ4

Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon).

Answer:

99.4 Celsius

Explanation:

Answer B

From least luminous to most luminous:

White dwarf A star - White dwarfs are small, dense, and dim stars that have exhausted their nuclear fuel and have cooled down. They emit very little light, and their luminosity is much lower than that of most other types of stars.

Red giant K star - Red giants are large and relatively cool stars that have exhausted the hydrogen fuel in their cores and have expanded to several times their original size. They are brighter than main-sequence stars like our Sun but less bright than supergiants.

Supergiant F star - Supergiants are massive and luminous stars that are in the last stages of their lives. They are much larger and brighter than most other types of stars, including red giants, and have a high luminosity. F-type supergiants are particularly bright and have a high surface temperature.

Answer:

190

Explanation:

Gold has atomic number of 79, which is the number of protons.

Mass number = #protons + #neutrons = 79 + 111 = 190

A solution with ph 4 has 10000 times the h concentration of a solution with ph 8.

the solution, in chemistry, is a homogeneous mixture of two or more substances whose relative amounts can be varied continuously up to the so-called solubility limit. The term solution is usually applied to the liquid state of aggregation, but gaseous and solid solutions are also possible. Hypotonic, isotonic, and hypertonic solutions (tonic).

A solution is a homogeneous mixture of two or more components with particle sizes less than 1 nm. Common examples of solutions are the sugar in water and salt in water, soda water, etc. In solution, all components appear as a single phase.

Learn more about solutions here

https://brainly.com/question/25326161

#SPJ4

Answer:

(NH2)-

Explanation:

A conjugate base is formed when a proton is removed from an acid

so NH3 => (NH2)- + H+

so (NH2)- is conjugate base of NH3

answer is B value of approximation

solving

The heat of vaporization for water is 40.7 kJ/mol, which means that it takes 40.7 kJ of energy to convert 1 mole of water from a liquid to a gas phase.

The energy required to boil the water is given as 63.8 kJ.

We can set up a proportion using these values:

40.7 kJ/1 mol = 63.8 kJ/x mol

To solve for x (the number of moles of water), we can cross-multiply and solve the equation:

40.7 kJ * x mol = 63.8 kJ * 1 mol

x mol = (63.8 kJ * 1 mol) / 40.7 kJ

x mol ≈ 1.57 mol

Since we know the molar mass of water is approximately 18.015 g/mol, we can convert moles to grams:

1.57 mol * 18.015 g/mol ≈ 28.29 g

Therefore, the mass of the sample of water is approximately 28.29 grams.

The concentration of the nitric acid solution is 0.0862 mol/\(dm^3\) and the concentration of the nitric acid in g/\(dm^3\) is 5.431 g/\(dm^3\).

A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution.

According to the neutralization law,

\(n_1M_1V_1 = n_2M_2V_2\)

\(n_1\)is the basicity of \(HNO_3\) =1

\(M_1\) is the molarity of \(HNO_3\) =0.05 mol/\(dm^3\)

\(V_1\) is the volume of \(HNO_3\) solution = 25\(cm^3\)

\(n_2\) is the acidity of NaOH =1

\(M_2\) is the molarity of NaOH =?

\(V_2\) is the volume of NaOH solution =14.5\(cm^3\)

Putting in the values we get:

\(n_1M_1V_1 = n_2M_2V_2\)

1 x 0.05 mol/\(dm^3\) x 25cm^3 = 1 x \(M_2\) x 14.5\(cm^3\)

\(M_2\) = 0.0862 mol/\(dm^3\)

Hence. the concentration of the nitric acid solution in  0.0862 mol/\(dm^3\) and the concentration of the nitric acid in g/dm3 is 0.0862 x63.01 g/\(dm^3\)= 5.431 g/\(dm^3\).

Learn more about the titration here:

https://brainly.com/question/22138555

#SPJ1

Answer:

Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at room temperature.

...

Explanation:

Answer:

Mercurous nitrate!

The 40 seconds long will SO₂ take to effuse from a container of 0. 3dm under similar conditions.

What is graham's Law?

According to Graham's law, the square root of a gas's molecular weight has an inverse relationship to the rate of effusion or diffusion of that gas.

r₁ / r₂ = √(M₂ / M₁)

Where,

r₁ = rate of effusion for gas 1

r₂ = rate of effusion for gas 2

M₁ = molar mass of gas 1

M₂ = molar mass of gas 2

As given,

X ml of Helium gas takes 10 seconds to effuse.

Apply Law,

r₁ / r₂ = √ (M₂ / M₁)

[Note: 1 superscript is use for He gas, and 2 superscript is use for SO₂.]

(X/10) / (t/X) = √ (64/ 4)

t/10 = √16

t/10 = 4

t = 40 sec

Hence, the 40 seconds long will SO2 take to effuse from a container of 0. 3dm under similar conditions.

To learn more about graham's Law from the given link.

https://brainly.com/question/22359712

#SPJ4

The percent yield of MgCl2 is calculated as follows: (35.8 g/45.56 g) * 100% = 78.58% per mass. The actual yield od MgCl2 is 35.8 g.

The chemical formula of magnesium chloride, or MgCl2, is one magnesium & two chloride ions. It is a salt (compound). MgCl2(H2O)x is the formula for its different hydrates. As an alloying agent and for catharsis.

MgCl2, a solid white substance. The direct mixing of dry chlorine and magnesium results in the unknown hydrate (hexagon shaped; r.d. 2.32; p.p.m. 714°C; b.p. 1412°C): Mg(s)+Cl2(g) = MgCl2 (s) As a component of carnallite (KCl), the substance also naturally exists.

To know more about MgCl2 visit:

https://brainly.com/question/30262579

#SPJ1

The organic product formed when cyclopentene reacts with iodobenzene in the presence of triethylamine and a Pd(0) catalyst is 1-iodocyclopentene.

The reaction you are describing is a cross-coupling reaction known as a Heck reaction. In this reaction, cyclopentene acts as the alkene component, while iodobenzene acts as the aryl halide component. Triethylamine serves as a base to remove the acidic proton from cyclopentene and facilitate the reaction.

The Pd(0) catalyst helps in the formation of the carbon-carbon bond between cyclopentene and iodobenzene. The reaction proceeds by the Pd(0) catalyst coordinating with the alkene and the aryl halide, followed by insertion of the alkene into the Pd-aryl bond. This generates a Pd-alkyl intermediate, which then undergoes reductive elimination to form the final product, 1-iodocyclopentene.

To know more about cyclopentene visit:

https://brainly.com/question/30456867

#SPJ11

The reaction of cyclopentene with iodobenzene in the presence of triethylamine and a Pd(0) catalyst leads to the formation of substituted cyclopentene products.

When cyclopentene reacts with iodobenzene in the presence of triethylamine and a Pd(0) catalyst, the organic product formed is a substituted cyclopentene. The reaction is an example of a palladium-catalyzed cross-coupling reaction known as the Heck reaction.

In this reaction, the Pd(0) catalyst facilitates the insertion of the aryl group from iodobenzene into the double bond of cyclopentene. Triethylamine acts as a base to deprotonate the cyclopentene, making it more reactive towards the Pd(0) catalyst.

The specific product formed depends on the regioselectivity and stereoselectivity of the reaction. In the case of cyclopentene, the reaction can occur on either side of the double bond, resulting in two possible products.

One possible product is the 3-substituted cyclopentene, where the iodobenzene adds to the carbon adjacent to the double bond. Another possible product is the 4-substituted cyclopentene, where the iodobenzene adds to the carbon opposite the double bond.

Both products can be obtained in varying amounts depending on the reaction conditions and the electronic and steric factors involved.

Learn more about reaction

https://brainly.com/question/11231920

#SPJ11

An empirical formula is the simplest ratio of atoms in a chemical compound, it gives the lowest whole number ratio of atoms in a compound. A molecular formula is the actual number of atoms of each element in a molecule.

In this case, the empirical formula XY3 gives the ratio of atoms in the compound, but not the actual number of atoms. The molecular formula of the compound can be a multiple of the empirical formula.

A possible molecular formula for the compound with the empirical formula XY3 is:

b. X2Y6: This is a possible molecular formula for the compound, as it is a multiple of the empirical formula, and it matches the ratio of atoms in the compound.

This is because, in order to obtain the molecular formula, you need to know the molecular weight or the molar mass, which can be obtained by isotopic analysis or other methods, once you have the molecular weight, you can calculate the number of atoms of each element in the compound.

Answer

acidic

Explanation

The pH scale ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).

Hence, coffee has a pH of about 5 which means it is considered to be in the acidic range.

The Executive Office of the President is a set of permanent agencies and is responsible for checking presidential power. lobbying the president on behalf of interest groups. performing defined management tasks for the president. deciding which bills the president will veto. The statement is incorrect.

The Executive Office of the President (EOP) is not responsible for checking presidential power, lobbying the president on behalf of interest groups, or deciding which bills the president will veto.  The EOP is a group of permanent agencies and offices that provide administrative support and policy advice to the president. Its primary function is to assist the president in carrying out their duties and responsibilities effectively. The EOP includes agencies such as the Office of Management and Budget (OMB), the National Security Council (NSC), the Council of Economic Advisers (CEA), and the Office of the United States Trade Representative (USTR), among others. While the EOP plays a crucial role in supporting the president, checking presidential power is primarily the responsibility of the other branches of government, such as Congress and the judiciary. Lobbying the president on behalf of interest groups is typically conducted by external organizations, such as advocacy groups or lobbyists. The decision of which bills the president will veto is ultimately up to the president themselves, guided by their administration's policy priorities and advice from various advisors.

Learn more about  Executive Office of the President here:

https://brainly.com/question/1901445

#SPJ11

The mass of the nitrogen gas is approximately 949 grams.

The mass of the nitrogen gas can be calculated using the ideal gas law, which states:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin. R is the ideal gas constant ( 0.08206 Latm/molK )

Given thw volume of the Nitrogen gas to be 759l, at ST, temperature equals 273.15 K and pressure 1 atm.

we can rearrange the ideal gas law to solve for n:

PV = nRT

n = PV / RT

Plug in the values

n = ( 1 atm × 759 L ) / ( 0.08206 Latm/molK × 273.15 K )

n = 33.86 mol

Finally, we can calculate the mass of the nitrogen gas using the molar mass of nitrogen:

m = n × M

Where M = 28.02 g/mol is the molar mass of nitrogen.

m = 33.86 mol × 28.02 g/mol

m = 949 g

Therefore, the mass is 949 g.

Learn more about ideal gases here: brainly.com/question/15634266

#SPJ1