The molecular weight of a gas that has a density of 7.10 g/L at 25.0 C and 1.00 atm pressure is g/mol.
A) 6.85× 10-2
B) 14.6
C) 28.0
D) 174

Answers

Answer 1

Answer:

D) 174 g/mol

Explanation:

Step 1: Given and required data

Density of the gas (ρ): 7.10 g/LTemperature (T): 25.0 °CPressure (P): 1.00 atmIdeal gas constant (R): 0.0821 atm.L/mol.K

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 25.0°C + 273.15

K = 298.2 K

Step 3: Calculate the molecular weight (M) of the gas

We will use the following expression derived from the ideal gas equation.

ρ = P × M / R × T

M = ρ × R × T / P

M = 7.10 g/L × (0.0821 atm.L/mol.K) × 298.2 K / 1.00 atm

M = 174 g/mol

Answer 2
The molecular weight of a gas will be "174".

Given values:

Density, d = 7.10 g/LTemperature, T = 25.0°CPressure, P = 1.00 atm

We know the formula,

→ [tex]PV = nRT[/tex]

or,

→ [tex]PM = \frac{W}{V} RT[/tex]

or,

→ [tex]PM = dRT[/tex]

By substituting the values, we get

[tex]1\times M = 7.10\times 0.0821\times 298[/tex]

     [tex]M = 7.10\times 0.0821\times 298[/tex]

          [tex]=174[/tex]

Thus the answer i.e., "option D" is appropriate.

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Related Questions

Pro
∆G0=-RT in k Known as​

Answers

Answer:

Gibbs free energy equation

Explanation:

A 12.0% sucrose solution by mass has a density of 1.05 gem, what mass of sucrose is present in a 32.0-mL sample of this solution?
A) 0.126g
B) 3.66g
C) 4.03g
D) 3.84g
E) 280 g

Answers

Answer:

Option C. 4.03 g

Explanation:

Firstly we analyse data.

12 % by mass, is a sort of concentration. It indicates that in 100 g of SOLUTION, we have 12 g of SOLUTE.

Density is the data that indicates grams of solution in volume of solution.

We need to determine, the volume of solution for the concentration

Density = mass / volume

1.05 g/mL = 100 g / volume

Volume =  100 g / 1.05 g/mL → 95.24 mL

Therefore our 12 g of solute are contained in 95.24 mL

Let's finish this by a rule of three.

95.24 mL contain 12 g of sucrose

Our sample of 32 mL may contain ( 32 . 12) / 95.24 = 4.03 g

9. If purple flowers are dominant to white flowers and
two white flowered plants are crossed, what
percentage of their offspring will be white
flowered?
What is question?

Answers

This subject is like biology

(FF)= dominant trait= purple flowers
(ff)= recessive trait= white flowers
Percentage of their offspring with white flower will be 0% because there is not white they are combined with purple

I hope this will help.

S this true or false most energy we use comes from fossil fuels

Answers

Answer:

True. Hope this helps. :)

True! Fossil fuels are one of the most common energy sources on earth.

As explained by kinetic theory, what causes gas pressure? *
A:The gain of energy from the collisions of gas particles with one another
B:The loss of energy from the collisions of gas particles with one another
C:The collisions between an object and rapidly moving gas particles
D:The weight of stationary gas particles upon a unit area of an object

Answers

Answer:

i think the answer is c

Explanation:

collission

THE OH BOND IN WATER IS POLAR BECAUSE

Answers

Answer: In the case of water, we know that the O-H covalent bond is polar, due to the different electronegativities of hydrogen and oxygen. Since there are two O-H bonds in water, their bond dipoles will interact and may result in a molecular dipole which can be measured.

Explanation:

what is the molarity of a solution made by adding 0.720 mole of NaOH to 2.40 liters of water

Answers

Answer:

Molarity = 0.3 M

Explanation:

Given data:

Moles of NaOH = 0.720 mol

Volume of water = 2.40 L

Molarity = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Molarity = 0.720 mol / 2.40 L

Molarity = 0.3 mol/L

Molarity = 0.3 M

. If you have 4.65 moles of H2 gas from: 2H2 + O2 → 2H2O

a. How much Oxygen is needed to completely react with hydrogen?

O2? =



b. How many moles of water will be produced?

H2O? =

Answers

a. 4.65 mol H2 * 1 mol O2 / 2 mol H2 * 16 g O2 / 1 mol = 37.2 grams of Oxygen to completely react with hydrogen

b. 4.65 mol H2 * 2 mol H2O / 2 mol H2 = 4.65 moles of water will be produced

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Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she use to produce the hydrogen she needs? NaOH and oil Zn and KOH H2SO4 and CaCO3 Mg and HCl

Answers

Answer:

Mg and HCI

Explanation:

The combination that she uses to produce hydrogen gas is:

d. Mg and HCl(Magnesium and Hydrochloric acid)

Production of hydrogen gas:

When magnesium reacts with Hydrochloric acid, It leads to the formation of Magnesium chloride as a salt, and hydrogen gas is liberated.

[tex]Mg+2HCl--- > MgCl_2+H_2[/tex]

When a metal reacts with an acid, it leads to the liberation of hydrogen gas and the production of their respective salt.

Thus, option d is correct.

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what is made from a chemical reaction?

Answers

Answer:

the Product

Explanation:

If 6.63 g of CuNO3 is dissolved in water to make a 0.140 M solution, what is the volume of the solution in milliliters?

Answers

Answer:

377mL is the volume of the solution

Explanation:

A 0.140M solution of CuNO₃ contains 0.140 moles of CuNO₃ per liter of solution. Thus, we need to convert first the mass of CuNO₃ to moles using its molar mass and, with the moles available, we can find the volume of the solution, thus:

Moles CuNO₃ -Molar mass: 125.55g/mol:

6.63g * (1mol / 125.55g) = 0.0528 moles of CuNO₃.

Volume of solution:

0.0528 moles of CuNO₃ * (1L / 0.140 moles CuNO₃) = 0.377L

0.377L * (1000mL / 1L) =

377mL is the volume of the solution

A gas sample occupies 4.39 L at 44 ºC. What will be the new volume, using Charles’ Law, if the temperature decreases to 25 ºC?

Answers

Hi there! :)

[tex]\large\boxed{x = 2.49 L}[/tex]

Use the proportion for Charles' Law where:

[tex]\frac{v_{1}}{t_{1}}= \frac{v_{2}}{t_{2}}[/tex]

v1 = initial volume

t1 = initial temperature

v2 = final volume

v2 = final temperature

Substitute in the given values into the proportion:

v1 = 4.39 L

t1 = 44° C

t2 = 25°C

v2 = x L

Set up the proportion:

[tex]\frac{4.39}{44} = \frac{x}{25}[/tex]

Cross multiply:

[tex]25 * 4.39 = 44x\\\\109.75 = 44x\\\\x = 2.49 L[/tex]

Answer:

The new volume will be approximately 2.49 L.

Explanation:

We are given that a gas sample occupies 4.39 L at 44° C.

We are also given that we are going decrease the temperature to 25° C.

Charles' Law has a formula which shows the relationship between the volumes of a samples and the temperatures of the samples.

The proportion is shown as:

[tex]\displaystyle \bullet \ \ \ \frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex],

where V₁ and V₂ are the initial and final volume respectively and T₁ and T₂ are the initial and final temperature respectively.

This proportion can be used to determine what our unknown is. We need to know the final volume.

[tex]\displaystyle \frac{4.39 \ \text{L}}{44 \ \text{C}} = \frac{\text{x}}{25 \ \text{C}}\\\\\\\frac{4.39}{44} = \frac{x}{25}\\\\\\4.39 \times 25 = 44 \times x\\\\\\44x = 109.75\\\\\\\frac{44x}{44}=\frac{109.75}{44}\\\\\\x = 2.49432 \approx \boxed{2.49 \ \text{L}}[/tex]

Therefore, if we reduce the temperature to 25 °C, we will be reducing the volume of the substance to 2.49 L.

How many joules are required to melt 250 grams of water

Answers

Answer:

i not sure but i searched it up and it said Q=104525J

Explanation:

The red outlined elements have what major characteristics in common?
1 point
Metals, Nonmetals, and Metalloids

Answers

One major characteristic they have in common is they are metals.

What happens after condensation to cause precipitation?
A
The sun heats water on the Earth's surface.

B
Water is absorbed into the ground.

C
Clouds fill with moisture and get too heavy.

D
Excess water runs downhill.

Answers

Answer:

The answer is c, Clouds fill with moisture and get too hravy

Write the formula for diphosphorous pentoxide

Answers

Answer:

P4O10

Explanation:

Protons and neutrons are similar because they both:

cause objects to become charged
are attracted to electrons
are found in the nucleus of an atom
have positive charges

Answers

Answer:

C. are found in the nucleus of an atom

Explanation:

Protons and Neutrons are always located at the center of the atom also called as the nuclei of the atom and constitute nearly all the mass of the atom, while the electrons revolve around them in orbits called shells. Only protons have a positive charge and electrons have negative charges, due to which only protons and electrons attract each other, while neutrons lack charges or have 'Neutral Charges'.

Predict the molecular structure (including bond angles) for each of the following.
a. PCl3
b. SCl2
c. SiF4

Answers

Answer:

PCl3 - trigonal pyramidal <109 degrees

SCl2 - bent<109 degrees

SiF4 - tetrahedral 109 degrees

Explanation:

The shape of all three molecules derive from a tetrahedral arrangement of electron pairs.

However, in PCl3 there is a lone pair of electrons on P and three bond pairs. This leads to the observance of a trigonal pyramidal geometry with bond angle <109 degrees.

In SCl2, there are four regions of electron density around S, two lone pairs and two bond pairs leading to a bent molecular geometry with bond angle <109 degrees.

In SiF4, there are four bond pairs and no lone pair. The molecular geometry is tetrahedral with a bond angle of 109 degrees.

What is the density of an object that has a mass of 350 g and a volume of 95 cm3?
A)
36.8 g/cm3
B)
3.68 g/cm3
33,250 g/cm3
D)
27-g/em3

Answers

Answer:

3.68 g/cm3

Explanation:

D = M / V

350 / 95

How many atoms of carbon are present in the products?

6CO2+6H2O=C6H12O6+6O2

Answers

6 carbon molecules are present!

Answer:

2.41 * 10^24 atoms of carbon present in the products.

Explanation:

First, we need to find the moles of carbon in the products in order to find the number of atoms.

We see that in the chemical formula, carbon belongs to the compound known as glucose. To get the amount of moles of carbon, we need to divide my the amount of carbon within glucose (in grams) from the total amu ( or grams) of glucose to get the moles.

C6 = 72.066.

C6H12O6 = 180.156

72.066/180.156 = 0.4000199827 moles of Carbon within the Glucose compound

Now we will convert to atoms/molecules by multiplying the moles by avogadro's number..

0.4000199827 moles C * 6.022*[tex]10^{23}[/tex] = 2.408920336 *[tex]10^{24}[/tex] atoms of Carbon present in the products

*Note --> this can be estimated to 2.41 * [tex]10^{24}[/tex] atoms of Carbon

Please help me!!!!


Use the activity series to determine if the following will react.
HCI + Zn —>

State whether they will or won't react and explain your reasoning.

Answers

Answer:

1. They will react.

2. 2HCI + Zn —> ZnCl2 + H2

Explanation:

1. From the question given above,

We can see that Zn is higher than H in the activity series.

NOTE: Elements higher (i.e at the top) in the activity series will displace those lower (i.e at the bottom) in the series. Thus, Zn is higher in the series than H. Therefore, Zn will displace H from solution. Hence, they will react.

2. The product obtained from the reaction can be seen as follow:

HCI + Zn —> ZnCl2 + H2

The above equation can be balance as follow:

There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HCl as shown below:

2HCI + Zn —> ZnCl2 + H2


An element has three isotopes. The masses and % abundances for the isotopes are: Isotope #1 mass 38.96 amu, % abundance=93.26%, Isotope #2 mass
39.96 amu, % abundance 0.012 %, and Isotope #3 mass= 40.96 amu, % abundance=6.73 %. The average atomic mass for this element has to be

Answers

Answer:

39.095

Explanation:

this is because all this isotopes belong to a single element thus

(38.96×93.26)+(39.96×0.012)+(40.96×6.73)

answer of that divided by 100%

The correct IUPAC name for the following molecule is: _________
a) trans-2,3-dichloro-5-methyl-2-hexene
b) trans-2,3-dichloro-5-methyl-3-hexene cis-2,3-dichloro-5-methyl-3-hexene
c) trans-4,5-dichloro-2-methyl-4-hexene cis-4,5-dichloro-2-methyl-4-hexene

Answers

Answer:

A.) trans-2,3-dichloro-5-methyl-2-hexene

Explanation:

The proposed question and structure has been attached to this answer.

The cis- and trans- isomers are used to denote the alignment of the functional groups to the carbon chain side. From the diagram, we see that:

the two chloro groups on the main compound are in opposite directions (-trans), and not the same sides (-cis)The bottom extended methyl group is on the 5th carbon as we count from left to rightthere's a total of 6 carbon atoms with 1 double bond on the second to third carbon.

Hence the name trans-2,3-dichloro-5-methyl-2-hexene

What is the total charge of an iron nucleus

Answers

i believe it’s a positive charge

How many mL of 0.125 M Ba(OH)2 would be required to completely neutralize 75.0 mL of 0.845 M HCl? What is the pH of the solution at the equivalence point?

Answers

Answer:

253.5mL of Ba(OH)₂ are required to neutralize the HCl solution

The pH at equivalence point is = 7

Explanation:

The reaction of Ba(OH)₂ with HCl is:

Ba(OH)₂ + 2HCl → BaCl₂ + 2H₂O

First, we need to find moles of HCl. With these moles and the chemical equation we can find the moles of Ba(OH)₂ and the volume required:

Moles HCl:

75.0mL = 0.075L * (0.845mol / 1L) = 0.063375moles HCl

Moles Ba(OH)₂:

0.06338moles HCl * (1mol Ba(OH)₂ / 2mol HCl) = 0.03169 moles Ba(OH)₂

Volume of the 0.125M Ba(OH)₂:

0.03169 moles Ba(OH)₂ * (1L / 0.125mol) = 0.2535L are required =

253.5mL of Ba(OH)₂ are required to neutralize the HCl solution

As the titration was of a strong acid, HCl, with a strong base, Ba(OH)₂, the pH at equivalence point is = 7

What term is used when heat is transferred from one piece of matter to another until they are of equal temperature?​

Answers

thermal contact

When heat flows from one object or substance to another it is in contact with, the objects or substances are said to be in thermal contact. The state where objects in thermal contact with each other reach the same temperature, no heat flows between them.

The volume of a sample of gas measured at 35 C and 1.00 atm pressure is 2.00 L. What must the final temperature be in order for the gas to have a final volume of 3.00 L at 1.00 atm pressure?

Answers

Answer:

the final temperature is 465.2k

The Earth and the spaceship both have mass. The astronaut is attracted to Earth by gravity, but he is not attracted to the spaceship. Explain.

Answers

The spaceship does not have any gravitational pull. A spaceship can not produce its own gravity like Earth does.

What mass of dinitrogen monoxide, N2O, contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?

Answers

Answer:

0.9612 g

Explanation:

First we calculate how many moles are there in 3.00 g of CCl₃F, using its molar mass:

3.00 g CCl₃F ÷ 137.37 g/mol = 0.0218 mol CCl₃F

Now, we need to calculate how many grams of N₂O would have that same number of molecules, or in other words, the same amount of moles.

Thus we calculate how many grams would 0.0218 moles of N₂O weigh, using the molar mass of N₂O :

0.0218 mol N₂O * 44.013 g/mol = 0.9612 g N₂O

The  mass of dinitrogen monoxide is 0.9612 g

The calculation is as follows:

The number of  moles are there in 3.00 g of CCl₃F, using its molar mass:

= 3.00 g CCl₃F ÷ 137.37 g/mol

= 0.0218 mol CCl₃F

Now the mass should be

=[ 0.0218 mol N₂O ×  44.013 g/mol

= 0.9612 g N₂O

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In a 0.25 M solution of HA (a weak acid), 1.0 % if the HA is ionised.
a) Calculate the actual concentration of HA, H₂O ^+ and A^- in this solution ?​

Answers

Answer:

dunno

Explanation:

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please help me im timed :CI will mark brainly :CRead the excerpt from "Healthy Eating.""I was taking all these pills like an old woman," said Naar, a neonatology nurse at Baptist Hospital. "My blood pressure is hereditary, but I added to it by adding the pounds and eating horribly every day." . . .A nutritionist took her shopping and introduced her to the joys of cauliflower. She upped her workouts, stopped eating hamburgers three times a week and scaled back on the Cold Stone pistachio ice cream.Today, Naar is 20 pounds lighter and down to two pills a day.Which evidence does the author use to support the argument that people can improve their health by making small changes to their diets?an expert quotationscientific factsan anecdotehistorical information Evaluate 1/3 divided by 1/2 What is located in the South Pacific Ocean?A) Marianas TrenchB) Mid-Atlantic RidgeC) Mt. EverestD) North Pole A Jewish person is MOST likely to attend a religious service in what sacred house of worship? please help me with this question !!! Im timed .( Find the volume of the prism, using a calculator if necessary.4 cm9 cm5 cm5 cm12 cm I need help with this question please and thank you it is easier to climb up a slanted slope than a vertical slope can you help me please Do) 9. The statement below refers to the US Constitution. State Legislatures have no security for the powers now presumed to remain to them: or the people for their rights. Do O Anti-Federalists, because the statement means that the rights of the states and people are not protected Which group made this statement and why? O Federalists, because the statement means that the rights of the states and people are protected O Federalists, because the states would lose power under the central government O Anti-Federalists, because the states would be more powerful than the central government Find the matrix A of the reflection in the line L in R2 that consists of all scalar multiples of the vector. Osmosis occurs when ____________ goes from _________ to _________. When the onion and elodea cells were put in salt water the _____________ left the cell because their was a ____________amount outside. How many solutions does the system have?Pig RaceTime (seconds)O zeroO oneO twoO infinite ......gold in your ring is glittering use a , an , the , nothing A password is 4 characters long, consisting of 2 letters and 2 numbers. The password must begin and end with aletter. If numbers can be repeated but letters cannot, how many possibilities are there?a. 65,000b. 60,840c. 58,500d. 52,650 The speed of revolution of particle going around a circlr is doubled and its angular speed is havled. What happen to the centripetal acceleration?a) unchanged b) doubles c) halvesd) becomes four times You are building a rock wall for a flower bed along your 46-foot long driveway. You want the wall to be one-half of the length of the driveway with an absolute deviation of at most 6 feet. Write and solve an absolute value inequality that represents the possible lengths of the wall. simplify the expression 2x (x - 6) Can you crack the codes? Practice your vocabulary skillsand have some funby figuring out the titles of the renamed holiday songs. You may use a dictionary if necessary. 1."Elation to the Earth" =____ 2. "Elsewhere in a Hay Bin" =_____ 3. "Allow it to Precipitate Frozen Crystallized Water Vapor!" =____ 4. "Oh, Eight-Day Jewish Festival!" =____ 5. "Metallic-colored Chiming Instruments" =____ HELP!!!!!! The coordinate pairs could represent the the vertices of a triangles congruent to KLM? PLEASE HELP THIS IS TIMED