I want to ask a question about coefficients

The molar mass of a gas with a density of 1.02 g/L at 2.13 atm and a temperature of 20°C is 47.9 g/mol.The molar mass of an element or compound is the mass of one mole of that substance. A mole is the SI unit for the amount of a substance.

It's defined as the amount of a substance that contains the same number of entities as there are atoms in 12 grams of carbon-12.Molar mass (M) = mass (m) ÷ amount of substance (n)So, M = m/n

Where m is the mass in grams and n is the number of moles. The unit of molar mass is grams per mole (g/mol).

The ideal gas law is used to calculate the molar mass of a gas. The ideal gas law is:P V = n R T,Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Convert the density to grams per liter: 1.02 g/L.

The density is mass/volume, thus 1.02 g/L means that 1 liter of the gas weighs 1.02 g.

This means that 1 mole of gas will occupy 22.4 L (at standard temperature and pressure, STP).Calculate the number of moles of gas using PV = nRT.P = 2.13 atmV = 22.4 L (at STP)R = 0.0821 L·atm/K·molT = 273.15 K + 20 K = 293.15 K

Thus, n = PV/RT = (2.13 atm × 22.4 L)/(0.0821 L·atm/K·mol × 293.15 K) = 0.973 mol

Calculate the molar mass (M) using M = m/n.m = density × volume = 1.02 g/L × 22.4 L = 22.848 gM = m/n = 22.848 g/0.973 mol = 23.5 g/mol Convert to units of grams per mole: 23.5 g/mol

The molar mass of a gas with a density of 1.02 g/L at 2.13 atm and a temperature of 20°C is 47.9 g/mol.

For more question on compound

https://brainly.com/question/12651906

#SPJ8

smoke

Explanation:

carbon dioxide is introduced into the atmosphere by burning of fossil fuels and forests

To solve molality use the following equation: ΔTb = Kb x molality.

Molality (m) is a measure of the concentration of a solution and is defined as the number of moles of solute per kilogram of solvent. To calculate molality, follow these steps:

To find the boiling point of the solution (BP solutions), the boiling point elevation constant (Kb) of the solvent and the molality of the solution. With these values, we can use the following equation:

ΔTb = Kb x molality

where ΔTb is the boiling point elevation, Kb is the boiling point elevation constant of the solvent, and molality is the molal concentration of the solution.

Find out more on STP here: https://brainly.com/question/29796637

#SPJ1

The rate law for the overall reaction is, \(k[A][B]\).

Rate law, It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given the mechanism for the reaction :

Step 1 :  \(A+B \rightarrow AB\)  (slow)

Step 2 : \(A+AB \rightarrow A_2B\) (fast)

Overall reaction : \(2A+B \rightarrow A_2B\)

The rate law expression for overall reaction should be in terms of A and B.

As we know that the slow step is the rate determining step. So,

The slow step reaction is, \(A+B \rightarrow AB\).

The expression of rate law for this reaction will be, \(k[A][B]\)

Hence, the rate law for the overall reaction is \(k[A][B]\).

To know more about the rate law, here

brainly.com/question/29811504

#SPJ4

The International Union of Pure and Applied Chemistry (IUPAC) provides a standard system for naming organic compounds.

It is essential to learn this nomenclature system to communicate correctly about the chemical structures of compounds and how they relate to each other. Here is the IUPAC name of the following substance.Below is the structure of the given compound: In the given compound, there are four carbon atoms that are connected with single bonds. Carbon atoms are also attached to hydrogen atoms. Since it has four carbons in the main chain, the root name will be "but-". The functional group present in the molecule is the carboxylic acid group (-COOH), which gives the suffix "-oic acid." Therefore, the IUPAC name of the given substance is Butanoic acid.Thus, the IUPAC name of the given compound is Butanoic acid. It is essential to know the IUPAC naming of organic compounds to communicate correctly about the chemical structures of the compounds.

for such more questions on Chemistry

https://brainly.com/question/29886197

#SPJ8

Answer: no for both

Explanation:

just did it

Both reactions will not take place ordinarily.

The reactivity series is a list of metals in their order of reactivities - usually in ascending or descending order.

Following this order: Li>K> Ba > Sr> Ca > Na > Mg > Al> Mn > Zn > Cr> Fe > Cd >Co > Ni > Sn > Pb> H > Sb> Bi > Cu > Ag > Pd > Hg > Pt > Au

It means that Li is the most reactive and will displace every other metal in reactions while Au is the least reactive and will not be able to displace metals of higher reactivities.

Thus, for the reaction below:

Mn +Ca0 ---> Ca+MnO

Mn is lower in reactivity than Ca and will therefore not be able to displace ca from CaO.

Also for:

Ag+NaNO3 → AgNO3 +Na

Na is higher than Ag in reactivity and will ordinarily not be displaced by Ag in the reaction.

More on reactivity series can be found here: https://brainly.com/question/10443908

Scientists cannot pinpoint the changes or variations in the results to a single source when more than one variable is altered during an experiment. The outcomes can be attributed to the independent variable directly by examining and modifying each variable separately.

You can evaluate the outcomes of your experiment to determine how much one adjustment impacted the outcome by testing just one variable at a time. You won't be able to identify the variable that caused the outcome if you're testing two variables simultaneously. A controlled variable is one that is kept constant with the goal of not affecting how an experiment turns out. Controlling any factors that can affect an experiment's outcomes allows us to be certain that the altered variable is what caused our results.

Learn more about variables here-

https://brainly.com/question/17344045

#SPJ9

The reaction is exndthermic as there's the

An endothermic response is any chemical response that absorbs warmness from its environment.

The absorbed power gives the activation power for the response to occur. A hallmark of this form of response is that it feels cold.

The generic cost for water’s regular boiling factor is 373.2 K (100.0 °C), and so this calculation is in affordable agreement. And so, announcing a procedure is spontaneous at “high” or “low” temperatures method the temperature is above or below, respectively, that temperature at which ΔG for the procedure is zero.

As cited earlier, this situation describes a gadget at equilibrium.Combustion procedures are exothermic (ΔH < 0> 0). The response is consequently spontaneous (ΔG < 0>).

Read more about the temperature:

https://brainly.com/question/24746268

#SPJ4

Answer:

iv. -NH₂

Explanation:

The amine group is an activating substituent and provides an ortho-para orientation.

The free electrons in the nitrogen atom provide stabilization by resonance in the sigma complex if the attack by the electrophilic reactant occurs in the positions ortho or para with regards to the nitrogen atom.

Answer: 0.056

Explanation:

The molarity of the solution is the ratio of the number moles of solute to the volume of solution. Hence, the molarity of the given solution is 0.056 M. Thus, option D is correct.

Molarity is a common term used to express the concentration of a solution . It is the ratio of the number of moles of solute to the volume of solution in liters.

Given that,

volume of HCl solution  = 9 L

no. of moles of HCl = 0.50 moles.

Then,

molarity = no.of moles/volume in L

M = 0.50 Moles/9 L

   = 0.056 M.

Therefore, the molarity of the solution is 0.056 M.

Find more on molarity :

https://brainly.com/question/16727614

#SPJ3

Cyclopropane is a group of answer choice a. chemically very reactive.

Cyclopropane is a cyclic alkane that consists of three carbon atoms bonded to each other to form a ring. Each carbon atom is bonded to two hydrogen atoms, giving the molecule the formula C3H6.

Cyclopropane is known to be chemically very reactive due to the presence of high ring strain in the molecule.

The bond angles in cyclopropane are 60°, which is much smaller than the ideal tetrahedral bond angle of 109.5°. This causes the bonds to be weaker and more reactive than those in other alkanes.

As a result, cyclopropane undergoes a variety of reactions, including ring-opening reactions and addition reactions with electrophiles.

It is also more prone to undergo combustion reactions than other alkanes. Overall, the high reactivity of cyclopropane makes it an important molecule in organic chemistry and a useful starting material for the synthesis of other compounds.

To know more about Cyclopropane, refer here:

https://brainly.com/question/4329256#

#SPJ11

The classification of the uses of the given elements are as follows:

Elements are pure substances which cannot be split into simpler units by ordinary chemical processes.

Elements are composed of atoms.

Elements can be classified into three:

Elements have several uses which depends on the properties of the element,

For example, metals are usually solids and are good conductors of heat and electricity, hence metals are used in construction of heating utensils and electrical wires.

Example of metals include: copper, gold, aluminum, nickel, lithium, etc.

Non-metals are usually gases or liquids and are poor conductors of heat ad electricity. Hence, non-metals are used as insulators as well as serve other purposes.

Examples of non-metals include: fluorine, iodine, oxygen, etc.

Semi-metals are poor conductors and are used as semi-conductors. Examples are germanium, and silicon.

Learn more about elements at: https://brainly.com/question/6258301

#SPJ1

Answer:

pickles are ligit good

Explanation:

i like pickles but not his

Answer:

Cm = n/V

n(H2SO4) = 245/98 = 2.5 mol

Cm(H2SO4) = 2.5/1 = 2.5 M

Explanation:

Answer:

The value of pOH of a solution is 2.28

We need to find the [OH-] in a solution. We know that,

pOH=-\text{log}[OH^-]pOH=−log[OH−]

Put all the values,

\begin{gathered}2.28=-\log[OH^-]\\\\=0.00524\end{gathered}2.28=−log[OH−]=0.00524

So

Answer:

Explanation:

Here, we want to get the number of moles of glucose in 0.5L of 0.4 M solution

Firstly, we need to recall that concentration or molarity is of the unit mol/dm^3

Mathematically, 1L is 1 dm^3 , thus, we have it that 0.4M is the same as 0.4 mol/dm^3

Now, to get the number of moles from molarity, we have to multiply the molarity by the volume

We have that as:

Consumers are organisms which depend on the producers or autotrophs for their food and nutrition.

Consumers are also known as heterotrophs, and they feed on the producers (autotrophs or self-feeders or plants) and herbivores (animals that eat plants) for food and energy. They don't produce their own food.

There are four types of consumers:

1) Primary – Herbivores are known as primary consumers and their source of food is plants or the first trophic level of the food chain. Example, Rabbits, Butterflies, Zooplanktons, etc.

2) Secondary – these consumers eat both plants and herbivores and are therefore also known as omnivores. Example, Ants, Crabs, Rats, Humans, etc.

3) Tertiary – these consumers eat primary and secondary consumers. Thus, they can be omnivores as well as carnivores. Example, Hawks, Snakes, Lions, etc.

4) Quaternary – these consumers prey on the tertiary consumers. Example, Polar bear, Alligator, etc.

Learn more about Consumers here:

https://brainly.com/question/13420317

#SPJ9

Answer: A

Explanation: Plants us photosynthesis transform sunlight, water, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel

Answer:

stroke

Explanation:

• In this case we are given that a molar mass of the compound is 129g/mol.

• We will use the % composition of the compound to determine how many grams of each element can be found in this compound with 129g/mol.

• we will also consider 83% C and 17% H. as grams percentage of each element.

Step 1:

1. For C

129g sample *83gC / 100g sample = 107.07 g Carbon

2 . For H

129 g sample * 17g H /100 = 21.93 g Hydrogen

Step 2 :

( Now use the molar mass of each element to determine how many moles of each are present in one mole of a compound )

1. For C

n =mass C/Mol. Mass C

= 107.07g /12.011g/mole

= 8.914 moles

≈ 9 moles

2. For H

n = m/M

= 21.93g /1.00794g/mol

= 21.75

≈ 22 moles

Finally, This means that our compound contain 9 molecules of Carbon and 22 molecules of hydrogen .

Therefore the molecular formula will be C9H22 , 2-Methylpropane .

Answer:

C

that some of the mass was lost to the air as smoke

Answer:

C

Explanation:

A: Light isn´t part of the mass of magnesium, light is energy, it doesn´t occupate space.

B: Mass clearly have a relationship with matter, if you increase the amout of mass, you will increase the amout of matter, one way or another.

C: It is correct, some of the mass was lost because hot gases tend to go up.

D: Yes, the ash has a lower mass than magnesium, but it is not because ash is lighter or something like that. It is because some of the ash was lost due to the air.

Answer:

1.Growth.

2 Reproduction.

3.respond to stimuli

4.are made from more than 1 cell

5.need energy to live

hope this helped

Answer:

Explanation:

The number of atoms that remains after 3 half-lives given that it was originally 300000 atoms is 37500 atoms

Data obtained from the question

Original amount (N₀) = 300000 atoms

Number of half-lives (n) = 3

Amount remaining (N) =?

How to determine the amount remaining

The amount remaining after 3 half-lives can be obtained as illustrated below:

N = N₀ / 2ⁿ

N = 300000 / 2³

N = 300000 / 8

N = 37500 atoms

Answer:

compounds, on the other hands can have their bonds broken with practical amounts of energy, such as the heat from a fire. Matter can be broken down into two.

The molecular mass of the gas, given that 2.63 g of the gas occupied 0.98 L at standard conditions of temperature and pressure is 60 g/mol

First, we shall obtain the mole of the gas. Details below:

PV = nRT

1 × 0.98 = n × 0.0821 × 273

0.98 = n × 22.4133

Divide both sides by 22.4133

n = 0.98 / 22.4133

n = 0.0437 mole

Finally, we shall obtain the molecular mass of the gas. This is shown below:

Molar mass = mass / mole

Molar mass of gas = 2.63 / 0.0437  

Molar mass of gas = 60 g/mol

Learn more about molar mass:

https://brainly.com/question/18983376

#SPJ1

We have to name this compound. First this is an alkyne because it has a triple bond, then the sufix of the name is yne. It has 4 atoms of C, then this is a butyne.

Then we have two options, we can start counting the C from left to right or from right to left. The rule says that the chlorine must have the lowest number possible. If we count from left to right, the triple bond is between C-3 and C-4 and the chlorine is bonded to C-4. So it name would be 4-chloro-3-butyne.

If we count from right to the left. The triple bond is between C-1 and C-2 and the chlorine is bonded to C-1. The name would be 1-chloro-1-butyne. We are giving with this option to the chlorine the lowest number possible.

Answer: A. 1-chloro-1-butyne.

The qualities Tom Walker and his wife have in common were they both were grasping and without conscience

The question has been asked from the story "The Devil and Tom Walker" by Washington Irving. As the story describes Tom's encounter with the devil, he is a complex character. However, he and his wife seem to complement each other well and have some personality traits in common. Tom and his wife are both miserly, avaricious, cruel, and morally void.

More so than her husband, Tom's stereotypically nagging, scolding wife verbally and perhaps even physically abuses him when she's not hoarding his valuables. Tom's wife courageously decides to accept Old Scratch's offer to sell her husband's soul for money when Tom first rejects it. She takes the family's silver into the swamp with her so she may haggle with the devil.

Read more about Tom Walker on:

https://brainly.com/question/30492871

#SPJ1