a weather balloon is inflated to a volume 2.2 10square3 L with 374g of helium. what is the density of helium in grams per liter

Answers

Answer 1

Answer:

Density = 0.17 g/L

Explanation:

It is given that,

Volume of the inflated balloon filled with Helium, [tex]V=2.2\times 10^3\ L[/tex]

Mass, m = 374 g

We need to find the density of helium. It is equal to its mass per unit volume. It can be given by :

d =m/V

[tex]d=\dfrac{374\ g}{2.2\times 10^3\ L}\\\\=0.17\ g/L[/tex]

So, the density of helium in the balloon is 0.17 g/L.


Related Questions

Between which two objects is gravitational attraction the greatest?


between the penny and the small pot


between the book and the cereal box


between the small pot and the book


between the paper clip and the penny

Answers

Answer:

Between the small pot and the book

Explanation:

Since gravitational force is influenced by the mass of an object, the higher the mass of two objects, the stronger the gravitational force.

Thus, the force between the pot and the book is strongest, since the two have the highest mass.

Have a nice day!

A desert area has many species of cactus and brush as well as birds, snakes, lizards, and rodents. This desert is an example of a

Answers

Answer: Climax Commuity.

Explanation: (hope it’s right! Good luck!)

which part of the mushroom gathers nutrients from the soil or dead material that the mushroom is decomposing?

Answers

Answer:

The Mycelium is usually hidden in the soil, in wood, or another food source. A Mycelium may fill a single ant or cover many acres. 

When you lift an object, you add the energy of lifting the object to the object

Answers

Answer:

Which is kinetic energy at its best, cause you are moving your arm or hand in motion, bu the object is in potential energy, where it isn't moving

Explanation:


Which property of gases is explained by the process of diffusion?
A.
their ability to compress under high temperature
B.
their ability to expand under low temperature
C.
their ability to expand under pressure
D
their ability to fill the available volume of a container

Answers

Answer:

The appropriate alternative is "Option D".

Explanation:

Diffusion would be a random or physical phenomenon that corresponds to that same transfer budget of molecules from some kind of highly concentrated area to something like a lower one. The substance which diffuses may be strong, liquids, and gaseous. Correspondingly, the framework where certain diffusion happens can however be amongst the three aspects of sustainability.

All those other options aren't relevant to the situation in question. So the above alternative becomes the right one.

Which term refers to the process by which land is worn away by natural forces or human activity?

Answers

Answer:

erosion

Explanation:

erosion is the term that refers to the process by which land is worn away by natural forces or human activity.

Answer:

Erosion

Explanation:

Just took the test, hope it helps!

if the Chemical Reaction bellow started out with a total mass of 45 grams, what would be the total mass of the products?

2Na + 2H2O ---> 2 NA OH + H2

Answers

Answer:

When 45 gram of total mass of reactant react 45 gram of product will also produced

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

In a similar way,

2Na + 2H₂O    →  2NaOH + H₂

45 g         =        45 g

when 45 gram of total mass of reactant react 45 gram of product will also produced. (2NaOH + H₂ = 45 g)

A mixture of methane and oxygen gases at a total pressure of 727 mm Hg contains methane at a partial pressure of 571 mm Hg. If the gas mixture contains 3.62 grams of methane, how many grams of oxygen are present

Answers

Answer: 1.95 g of oxygen is present.

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

[tex]p_{total}=p_{methane}+p_{oxygen}[/tex]

Given : [tex]p_{total}[/tex] =total pressure of gases = 727 mm Hg

[tex]p_{methane}[/tex] = partial pressure of methane = 571 mm Hg

[tex]p_{oxygen}[/tex] = partial pressure of oxygen = ?

[tex]727=571+p_{oxygen}[/tex]  

[tex]p_{oxygen}=156mmHg[/tex]

Also [tex]p_{oxygen}=x_{oxygen}\times p_{total}[/tex]

Given : 3.62 g of methane is present

moles of methane = [tex]\frac{\text{Given mass}}{\text {Molar mass}}=\frac{3.62g}{16g/mol}=0.226moles[/tex]

[tex]x_{oxygen}[/tex] = mole fraction of oxygen  

=[tex]\frac{\text {moles of oxygen}}{\text {total moles}}=\frac{y}{y+0.226}[/tex]

[tex]156=\frac{y}{y+0.226}\times 727[/tex]

[tex]y=0.061[/tex]

mass of oxygen = [tex]moles\times {\text {Molar mass}}=0.061\times 32=1.95g[/tex]

Thus 1.95 g of oxygen is present.

During science lab, Jacob mixes together sodium hydroxide (NaOH) and hydrochloric acid (HCl). The two chemicals react to form sodium chloride (NaCl) and water (H2O).

Which of the following are reactants in the chemical reaction described above?
A.
hydrochloric acid and water
B.
sodium hydroxide and hydrochloric acid
C.
sodium hydroxide and sodium chloride
D.
sodium chloride and water

Answers

B. Sodium hydroxide and Hydrochloric acid

Further explanation

Chemical equations can be expressed in terms of

word reaction formula reaction

In a chemical reaction, there are several components, including reactants, products, and compounds that react in the form of solids, gases, and liquids

Reactants are compounds that react and form products

The reactants are generally to the left of the chemical equation and the products are to the right of the reaction

The statement of the word reaction above can be expressed by the reaction formula

[tex]\tt NaOH+HCl\rightarrow NaCl+H_2O[/tex]

This reaction is called a neutralization reaction because it involves acids(HCl) and bases(NaOH) and produces salt(NaCl)and water(H₂O)

From the reaction above, the reactants on the left are NaOH and HCl compounds

The value of ΔH° for the reaction below is -126 kJ. __________ kj are released when 2.00 mol of NaOH is formed in the reaction?

2 Na2O2 (s) + 2 H2O (l) → 4NaOH (s) + O2 (g)

A) 252
B) 63
C) 3.9
D) 7.8
E) -126

Answers

"63" kj are released. A further solution is provided below.

The equation is:

[tex]2 Na_2O_2 (s) + 2 H_2O (l) \rightarrow 4NaOH (s) + O_2 (g)[/tex]

Value of ΔH,

-126 kJ

As we know,

4 moles of NaOH - (-126) kJ  2 moles of NaOH - X

Now,

→ [tex]4\times X=-126\times 2[/tex]

→     [tex]4X = -252[/tex]

→       [tex]X = -\frac{252}{4}[/tex]

→            [tex]= -63[/tex]

Thus the above response is correct.

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1
Aluminum metal and oxygen gas combine to produce aluminum oxide.
Which of these is the balanced equation for this reaction? *

Answers

Answer:

4 Al(s) + 3 O₂(g) ⇒ 2 Al₂O₃(s)

Explanation:

Let's consider the unbalanced molecular equation when aluminum metal and oxygen gas combine to produce aluminum oxide. This is a combination reaction.

Al(s) + O₂(g) ⇒ Al₂O₃(s)

We can balance O  atoms by multiplying O₂ by 3 and Al₂O₃ by 2.

Al(s) + 3 O₂(g) ⇒ 2 Al₂O₃(s)

Finally, we multiply Al by 4 to get the balanced equation.

4 Al(s) + 3 O₂(g) ⇒ 2 Al₂O₃(s)

heyyy Powerpuff girls! what advantage does globe maps have over a flat map?

Answers

Answer:

The advantage of the globe is that it promotes visual accuracy. Students need to use a globe frequently if they are to form accurate mental maps. The advantage of the world map is that you can see the entire world at one time. The disadvantage is that world maps distort shape, size, distance, and direction.

Explanation:

miss girl- you could've just looked this up

(just make it look like you typed it)

Answer:

The advantage of the globe is that it promotes visual accuracy. Students need to use a globe frequently if they are to form accurate mental maps. The advantage of the world map is that you can see the entire world at one time. The disadvantage is that world maps distort shape, size, distance, and direction.

Friend?

(3.5x10^5)x(4x10^-3)=exponent form

Answers

Answer:

1.4 x 10³

Explanation:

Given:

(3.5 x 10⁵)x(4 x 10⁻³)

Find:

Exponent form

Computation:

⇒ (3.5 x 10⁵)x(4 x 10⁻³)

⇒ 3.5 x 4 x 10²

⇒ 14 x 10²

1.4 x 10³

An ideal gas, consisting of n moles, undergoes an irreversible process in which the temperature has the same value at the beginning and end. If the volume changes from Vi to Vf, the change in entropy is given by:

Answers

Answer:

ΔS = nR(In (Vf/Vi))

Explanation:

We are told the temperature has the same value and therefore it's constant.

Formula for change in entropy isothermally is;

ΔS = nR(In (V2/V1))

V2 is final volume and V1 is initial volume.

We are told that the volume changes from Vi to Vf.

Thus, V2 = Vf and V1 = Vi

Hence;

ΔS = nR(In (Vf/Vi))

Please show work!
Question below::

Answers

The answer would be B

if an endothermic reaction begins at 26°C and decreases by 2°C per minute how long will it take to reach 0°C?

Answers

Answer:

13 minutes

Explanation:

For the endothermic reaction to reach 0°C, it will take 13 minutes.

 Let us follow the process step by step;

 Rate of decrease is 2°C per minute.

  Start is 26°C

    Time                   temperature

     0 min                    26°C

      1 min                     24°C

      2 min                     22°C

     3 min                      20°C

    4 min                       18°C

   5 min                        16°C

     6 min                      14°C

     7 min                      12°C

     8 min                     10°C

    9 min                       8°C

     10 min                      6°C

     11 min                       4°C

     12 min                      2°C

      13 min                      0°C

even about the food chain is correct?​

Answers

Answer:

its C, because the cocunut tree gets energy from the sun and makes it into cocunut that is true

Explanation:

its C, because the cocunut tree gets energy from the sun and makes it into cocunut that is true

what's common to H20,HF and NH3​

Answers

Answer:

They all contain sone hydrogen atoms.

Explanation:

H is hydrogen doi

What is the frequency of green light
that has a wavelength of 531 nm? (c
= 3.00 x 108 m/s)

Answers

We are given:

Wavelength of Green light (λ) = 531 nm  OR   531 * 10⁻⁹ m

Speed of light (c) = 3* 10⁸ m/s

Solving for the Frequency of the wave:

We know the relation:

c = νλ    

(where ν is the frequency, c is the speed of light and λ is the wavelength)

3*10⁸ = ν*(531*10⁻⁹)

ν = 3*10⁸ / 531*10⁻⁹                  [dividing both sides by the wavelength]

ν = 3*10⁸*10⁹ / 531                   [ since a⁻¹ = 1/a]

ν = 3*10¹⁷ / 531                         [ since mᵃ * mᵇ = mᵃ⁺ᵇ]

ν = 10¹⁷ / 177

ν = 1000 * 10¹⁴ / 177                 [we split the numerator to simplify]

ν = 5.65 * 10¹⁴

Hence, the frequency of Green light is 5.65 * 10¹⁴ Hz

Answer:

f = 5.6×10¹⁴ Hz  

Explanation:

Given data:

Wavelength of green light = 531 nm (531×10⁻⁹ m)

Frequency of green light = ?

Solution:

Formula;

Speed of wave = wavelength × frequency

Speed of wave = 3.00×10⁸ m/s

by putting vales,

3.00×10⁸ m/s = 531×10⁻⁹ m × f

f = 3.00×10⁸ m/s / 531×10⁻⁹ m

f  = 0.0056×10¹⁷ s⁻¹

f = 5.6×10¹⁴ Hz    (Hz = s⁻¹)

solve the equation: 3)15.000 cm²= x dm ²
BRAINLIEST!!!!

Answers

Answer:

x = 150 dm

Explanation:

10 cm = 1 dm

100 cm² = 1 dm²

15,000 cm² = 150 dm²

Answer:

csc = (60)

cos = (390)

−4 = cot (−45)

Explanation:

make me braienst please?

Hydrogen bonds are formed between molecules when hydrogen is covalently bonded to an element that has a
1
small atomic radius and low electronegativity
2
large atomic radius and low electronegativity
3
small atomic radius and high electronegativity
4
large atomic radius and high electronegativity
Submit Answer

Answers

Answer:

choice 3

Explanation:

Hydrogen bonding occurs when a H is bonded to a highly electronegative atom like F. Towards the upper right corner, most atoms have high electronegativity and small atomic radii, according to periodic trends.

Please give thanks :)

Hydrogen is covalently bonded to an element that has a small atomic radius and high electronegativity.  

• An intermolecular attractive force in which an atom of hydrogen, which is bonded covalently to a small, highly electronegative atom is known as a hydrogen bond.  

• Hydrogen bonds are very strong in comparison to other dipole interactions.  

A typical hydrogen bond exhibits a strength of about 5 percent of that of a covalent bond.  

• Hydrogen bonding takes place only in molecules where hydrogen bonding is bonded covalently to one of the three elements, that is, oxygen, fluorine, or nitrogen.  

Thus, correct answer is option 3.

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A large balloon contains 5400 m3 of He gas that is kept at a temperature of 280 K and an absolute pressure of 1.10 x 105 Pa. Find the mass of He inside the balloon. (Molar mass of He : 4.002 g/mol)

Answers

Answer:

1.02 × 10⁶ g

Explanation:

Step 1: Given data

Volume of the balloon (V): 5400 m³Temperature (T): 280 KAbsolute pressure (P): 1.10 × 10⁵ PaMolar mass of He (M): 4.002 g/mol

Step 2: Convert "V" to L

We will use the conversion factor 1 m³ = 1000 L.

5400 m³ × 1000 L/1 m³ = 5.400 × 10⁶ L

Step 3: Convert "P" to atm

We will use the conversion factor 1 atm = 101325 Pa.

1.10 × 10⁵ Pa × 1 atm / 101325 Pa = 1.09 atm

Step 4: Calculate the moles of He (n)

We will use the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 1.09 atm × 5.400 × 10⁶ L / 0.08206 atm.L/mol.K × 280 K

n = 2.56 × 10⁵ mol

Step 5: Calculate the mass of He (m)

We will use the following expression.

m = n × M

m = 2.56 × 10⁵ mol × 4.002 g/mol

m = 1.02 × 10⁶ g

Which of the following makes sense to round to the nearest 10?

A. Your friend's telephone number
B. The PIN code of your city or town
C. The number of pages in your Maths book
D.t he year of your birth

Answers

Answer:

C

Explanation:

You can’t round a phone number or Pin code

why would you round your birth year?

C^^
Makes the most sense, you cannot round a phone number, your birth year, or a pin code

For doping silicon with boron, silicon specimen was kept in gaseous atmosphere containing B2O3 that maintained the B concentration at the surface of Si specimen at the level of 3*10^26 boron atoms/m^3. The process was carried out at 1100 degrees C. The diffusion coefficient of B in Si at 1100 degrees C is 4*10^-13 cm^2/s. Calculate the concentration of B at the depth of 10^-4 cm from the surface after 130 minutes of diffusion at 1100 degrees C

Answers

Solution :

From Fick's law:

[tex]$\frac{D_{AB}}{\Delta z } \times (C_{A1}-C_{A2})=N_a$[/tex]

Mass balance: Exits = Accumulation

[tex]-N_A A = \frac{dm}{dt}[/tex]

[tex]-N_A A = \frac{dVp}{dt}[/tex]

[tex]-N_A A = \frac{dV}{dt}p[/tex]

[tex]-N_A A = \frac{dhA}{dt}[/tex]

[tex]-N_A A = \frac{dh}{dt} \times Ap[/tex]

From the last step, area cancels out and thus leaves :

[tex]-N_A = \frac{dh}{dt} \times p[/tex]

So now we can substitute the [tex]$N_A$[/tex] by the Fick's law

[tex]$\frac{D_{AB}}{\Delta z } \times (C_{A1}-C_{A2})=\frac{dh}{dt} p$[/tex]

Substituting the values we get

[tex]$=\frac{-4 \times 10^{-13}}{0.0001} \times (3 \times 10^{26} - C_{A2}) = \frac{dh}{dt} \times 2.46$[/tex]

[tex]$=-4 \times 10^{-9} \times( 3 \times 10^{26} - C_{A2}) = 0.0001 \times 2.46$[/tex]

[tex]$= -7800 \times 4 \times 10^{-9} \times (3 \times 10^{26}-C_{A2})=0.000246$[/tex][tex]$=-(3 \times 10^{26}-C_{A2}) = 7.8846 \times 100 \times \frac{1}{69.62} \times 6.022 \times 10^{23}$[/tex]

[tex]$C_{A2} = 6.85 \times 10^{28} \ \text{ boron atoms} /m^3$[/tex]

A sample of nitrogen gas is in a 65.0-L automobile air bag and has a pressure of 745 mm Hg. What is the pressure of this sample of gas at the same temperature if it is placed into a 25.0-L bag

Answers

Answer:

the pressure = 1937mmhg using standered unit of volume

List two different reasons ants work together

Answers

protect each other from threats and attacks from other animals, make working and building faster.

A chemical reaction is shown below:



Glucose + Oxygen --> Water + Carbon Dioxide



How many grams of water would be produced if the reaction contained each of the following:



20 g of glucose

15 g of oxygen

30 g of carbon dioxide

SELECT AN ANSWER

15 g of water


35 g of water


65 g of water


5 g of water

Answers

Answer:

Mass = 8.46 g

Explanation:

Given data:

Mass of water produced = ?

Mass of glucose = 20 g

Mass of oxygen = 15 g

Solution:

Chemical equation:

C₆H₁₂O₆ + 6O₂     →   6H₂O + 6CO₂

Number of moles of glucose:

Number of moles = mass/molar mass

Number of moles = 20 g/ 180.16 g/mol

Number of moles = 0.11 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 15 g/ 32 g/mol

Number of moles = 0.47 mol

now we will compare the moles of water with oxygen and glucose.

               C₆H₁₂O₆           :            H₂O

                   1                   :              6

                 0.11                :           6/1×0.11 = 0.66

                   O₂               :            H₂O

                   6                   :              6

                 0.47                :           0.47

Less number of moles of water are produced by oxygen thus it will limit the yield of water and act as limiting reactant.

Mass of water produced:

Mass = number of moles × molar mass

Mass = 0.47 mol  ×18 g/mol

Mass = 8.46 g

help help
What are the cells that respond to stimuli called?

Answers

Answer:

receptors which detect stimuli changes in the environment

Explanation:

Cells called receptors , which detect stimuli (changes in the environment).

which one does not share the same properties as the other


Si

Ti

At
Explain why

Answers

Answer:

Ti

Explanation:

Ti is titanium and does not share any similar properties with the likes of Si, silicon and At, astatine.

Titanium is a transition metal and a solid. Silicon and Astatine are non - metals. Silicon and Astatine also belongs to the p-block on the periodic table whereas Titanium is found on the d-block. Silicon and Astatine would prefer to take part in reactions where they can gain electrons because they are non metals whereas Titanium due to its metallic property would prefer a reaction where it can lose electrons.

When chlorobenzene reacts with Mg in ether followed by CO2 and neutralization with dilute HCl, __________ will be formed.

a. p-chlorobenzoic acid
b. p-deuterobenzoic acid
c. benzoic acid
d. benzene
e. No correct response

Answers

Answer:

c. benzoic acid

Explanation:

The given reaction is an example of a Grignard reaction:

When chlorobenzene (C₆H₅Cl) reacts with Mg in ether, an intermediate is formed (C₆H₅MgCl).

Said intermediate then reacts with CO₂ producing a benzoic acid salt (C₆H₅CO₂X), this salt is then neutralized with dilute HCl producing benzoic acid (C₆H₅CO₂H).

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According to the Northwest Ordinance, a territory became a state when it A stretched out rubber band is an example of:A. kinetic energyB. potential energyC. gravitational energyD. light energy I WILL MARK YOU AS BRANLIEST JUST DO THIS PLS ASAPEdson exercises in sets that are each t minutes long. He does 6 sets of push-ups, 3 sets of pull-ups, and 4 sets of sit-ups. Write an expression to represent the time it takes Edson to exercise as the sum of three different terms. Then simplify the expression. What is the ellos preterite form of the verb pedir?O pedieronO pusieronO pidieronO pidi What event was the beginning of the end for the Soviet Union?O A. The Berlin WallO B. The August RevoltO C. The Velvet RevolutionD. The September RebellionSUBMIT President Truman issued an Executive Order directing the military to give... 8. When using the scientific notation system to express large numbers, move the_______until____ digit(s) remain(s) to the left, then indicate the number of moves of the decimal point as the_______9. When a measurement is recorded, it includes the_____are certain plus one uncertain digit.a. Major figuresb. Significant figuresc. Relative figuresd. Relevant figures10.The ______is based on the lowest theoretical temperature, called______a Kelvin scale, absolute zerob. Celsius scale, absolute zeroc. Kelvin scale, boiling point of waterd. Centigrade scale, freezing point of water y=3x-56x+3y=15what is the value of y in the following system What political ideology values individual freedoms and equal rights enforcing many Enlightenment ideas? Hydrogen peroxide naturally breaks down into oxygen and water over time. When exposed to the enzyme catalase, hydrogen peroxide is rapidly converted into oxygen and water.What feature of catalase most likely is responsible for the change in the rate of conversion of hydrogen peroxide into water and oxygen?A, Catalase speeds up the conversion of hydrogen peroxide into water and oxygen by decreasing the reaction's activation energy.B, Catalase bonds permanently with the reactants causing hydrogen peroxide to rapidly break down by increasing the activation energy.C ,Catalase has a flexible structure that allows it to bind and convert any small hydrogen containing compound into water and oxygen.D, Catalase remains intact, so small amounts of it convert large amounts of hydrogen peroxide into water and oxygen immediately. What is the standard reduction potential,E, for the half-reaction Zn2+(aq)+2e- -> Zn(s)? Olivia baked 45 mini-loaves of banana bread to be sliced for snacks at a craft fair. She will place an equal number of loaves in 6 different locations. What if Olivia wants to put only whole loaves at each location? How many loaves will be at each location? Fontaine and Monroe are forming a partnership. Fontaine invests a building that has a market value of $356,000; the partnership assumes responsibility for a $128,000 note secured by a mortgage on the property. Monroe invests $103,000 in cash and equipment that has a market value of $78,000. For the partnership, the amounts recorded for the building and for Fontaine's Capital account are:_______.a. Building $356,000; Fontaine, Capital $309,000.b. Building $356,000; Fontaine, Capital $356,000.c. Building $228,000; Fontaine, Capital $128,000.d. Building $228,000; Fontaine, Capital $228,000.e. Building $356,000; Fontaine, Capital $228,000. 8. (06.02 MC)Which organelle is most likely to be found in both Archaea and Bacteria and why? (2 points)Both require chloroplasts for photosynthesis.Both have mitochondria to provide energy for the cell.Both need a nucleus in which to store their DNA.Both use ribosomes to synthesize proteins. Solve the system of equations 2x+y = 15 and 3x + 2y = -33 by combiningthe equations. If a diploid cell contains 48 units of DNA in its nucleus at the beginning of mitosis, how many units will be present in the daughter cell at the end of mitosis?A. 12B. 24 AMONG US CODE: BZPINF NEED HELP ASAP!!!! 2 QUESTIONS!!!!OFFERING BRAINIEST!!! Select all the fractions that are equal to 4.9 Group of answer choices LaTeX: \frac{490}{10}490 10 LaTeX: \frac{49}{10}49 10 LaTeX: \frac{490}{100}490 100 LaTeX: \frac{49}{100}49 100 LaTeX: \frac{490}{1000}490 1000 LaTeX: \frac{49}{1000} Circle theorems maths... Please help me!