The pressure of a sample of helium is 1.556 atm in a 268.5 mL container. If the container is compressed to 112.4 mL without changing the temperature, what is the new pressure?
a. 3.72
b. 0.651
c. 1.94e4
d. 277

Answers

Answer 1

Answer:

a.  3.72 [atm]

Explanation:

For a gas at constant temperature, (with no change in number of molecules of the gas), we can apply Boyle's Law:  [tex]P_1V_1=P_2V_2[/tex]

[tex](1.556[atm])(268.5[mL])=P_2(112.4[mL])[/tex]

[tex]\dfrac{(1.556[atm])(268.5[mL\!\!\!\!\!\!\!\!{--}])}{112.4[mL \!\!\!\!\!\!\!\!{--}]}=\dfrac{P_2(112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----})}{112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----}}[/tex]

[tex]3.716957[atm]=P_2[/tex]

It seems like the answer should have 4 significant figures since all of the other quantities have 4 significant figures, but the closest answer choice of those provided is a.  3.72


Related Questions

the element with a completely filled p-subshell is:

Answers

The element with the completely filled p-subshell is Ar (Option C)

What is electronic configuration?

This is the arrangement of elecartons in the atomic orbitals of an element. The modern electronic configuration makes use of the s, p, d, f orbital notation where

Sharp (s) = Maximum of 2 electronsPrincipal (p) = Maximum of 6 electronsDiffuse (d) = Maximum of 10 electrons Fundamental (f) = Maximum of 14 electrons

How to determine the element with the completely filled p-orbital

To obtain the correct answer, we shall write the electronic configuration of each element given in the question. This is illustrated below

Na (11) => 1s² 2s²2p⁶ 3s¹P (15) => 1s² 2s²2p⁶ 3s²3p³Ar (18) => 1s² 2s²2p⁶ 3s²3p⁶Al (12) => 1s² 2s²2p⁶ 3s²

From the above illustrations, we can see that only Ar has completely filled p-subshell.

Thus, Ar (Option C ) is the correct answer to the question

Complete question

See attached photo

Learn more about electronic configuration:

https://brainly.com/question/14283892

#SPJ12

A switch controls the current in a circuit that has a large inductance. The electric arc at the switch (Fig. CQ32.3) can melt and oxidize the contact surfaces, resulting in high resistivity of the contacts and eventual destruction of the switch. Is a spark more likely to be produced at the switch when the switch is being closed, when it is being opened, or does it not matter

Answers

When the circuit is opened, a spark is much more possible.

What is an inductor?

The primary purpose of an inductor is the storage of energy. This is why an inductor helps to eliminate a spark in a circuit.

In the circuit as described in the question, we know that there is no current when the circuit is closed, the current across the inductor remains constant but rapidly decreases at the opening of the circuit this could lead to a spark.

Learn more about an inductor:https://brainly.com/question/15893850

#SPJ11

if the same amount of heat is added to 50.0 g samples of each of the metals, which are all at the same temperature, which metal will reach the highest temperature?

Answers

The metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

What is the amount of heat added to each metal?

The amount of heat Q = mcΔT where

m = mass of metalc = specific heat capacity of mateal and ΔT = temperature change

Temperature change of the metal

Making ΔT subject of the formula, we have

ΔT = Q/mc

Given that Q and m are the same for each metal,

ΔT ∝ 1/c

We see that the temperature change is inversely proportional to the specific heat capacity.

Since the metals are at the same temperature, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

So, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

Learn more about temperature here:

https://brainly.com/question/16559442

#SPJ12

The table below shows the electronegativity values of various elements on the periodic table.
Electronegativities
1
2
15 16 17
24
3A 4A 5A 6A 7A
Li Be
8
F
1.0 1.5
2.0 2.5 3.0 3.5 4.0
Na Mg
P
0.9 1.2
1.5 1.8 2.1 2.5 3.0
K
Ca
Ge As Se Br
1.8 2.0 2.4 2.8
0.8 1.0
Rb Sr
2.5
0.8 1.0
Cs Ba
0.7 0.9
Which pair of elements would form an ionic bond?
O carbon (C) and oxygen (0)
H
2.1
a
ON
00
O

Answers

An ionic bond can be formed between Na and O, Mg and F or Li and H since they have large differences in their electronegativity values.

What are ionic bonds?

Ionic bonds are the bonds present in ionic compounds.

Ionic bonds are formed due to the electrostatic forces of attraction that exist between oppositely-charged ions.

Ionic bonds are formed between elements whose electronegativity values are far apart.

Thus, based on the given electronegativity values, an ionic bond can be formed between Na and O, Mg and F or Li and H.

Learn more about ionic bonds at: https://brainly.com/question/1332431

#SPJ1

An ionic bond can be formed between Na and O, Mg and F or Li and H since they have large differences in their electronegativity values.

What are ionic bonds?

Ionic bond, also called an electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Metal atoms form positive ions, while non-metal atoms form negative ions. The strong electrostatic forces of attraction between oppositely charged ions are called ionic bonds.

Ionic bonds are formed between elements whose electronegativity values are far apart.

Thus, based on the given electronegativity values, an ionic bond can be formed between Na and O, Mg and F or Li and H.

Learn more about ionic bonds at:

brainly.com/question/1332431

#SPJ1

What mass of H2 forms when
35.25 g Al reacts with excess
hydrochloric acid?

2AI + 6HCI →→2AICI 3 + 3H₂

Answers

Based on the mass ratio, the mass of H₂ produced is 3.51 g of H₂

What is the mass ratio of a reaction?

The mass ratio of a reaction is the ratio of the masses of the reactants as well as as products in a balanced equation of a reaction.

The equation of the reaction is given below;

2 AI + 6 HCI → 2 AICI₃ + 3 H₂

From the reaction equation, 2 * 27 g of Al produces 3 * 2 g of H₂

32.25 g of Al will produce: 6/55 * 32.25 g of H₂

Therefore, mass of H₂ produced is 3.51 g of H₂

Learn  more about mass ratio at: https://brainly.com/question/14577772

#SPJ1

Answer:

From the reaction equation, 2 * 27 g of Al produces 3 * 2 g of H₂

32.25 g of Al will produce: 6/55 * 32.25 g of H₂

Therefore, mass of H₂ produced is 3.51 g of H₂

Explanation:

An elemen belongs to group 17 of the periodic table. This element is most likely a.

Answers

Answer:

halogen

Explanation:

group 17 contains halogens

Answer:

The group 17 falls int he halogen category the element most likely Fluorine Chlorine Bromine Tennessine

Explanation:

Lucite contains 59.9 g C, 8.06 g H,
and 32.0 g O. You want to
determine the empirical formula.
How many moles of H are in the
sample?

{?} mol H

Answers

You start by finding the mol of each

59.9g C x (mol C / 12.01 g C) = 4.98 mol C
8.06g H x (mol H / 1.00 g H) = 8.06 mol H
32.0 g O x (mol O / 16.0 g O) = 2 mol O

So when you set it up you have
C4.98 H8 O2

You divide each by the smallest mol. The smallest mol is 2

C2 H4 O2.5

However you can’t have half a mol in the empirical formula. If the value ends in 0.5, you multiply everything by 2

You’re left with

C2H8O5

The EMPIRICAL formula for lucite is C2H8O5

Note empirical is not the same as chemical formula.

Answer:

8.00

Explanation:

I hope the spurs get wembanyama so bad

what is formed when mixing a weak acid and strong base

Answers

Explanation:

when a weak acid and a strong based are mixed they react the pH can be determined by consider ing the equilibrium

The answers is Equilibrium

What is the optimum pH of formic acid-formate buffer? (The pK, of formic acid is 3.75.)

1.875

3.75

5.625

7.50

Answers

The optimum pH of formic acid - formate buffer is 3.75

What is Buffer ?

A substance or a solution which resists any changes in pH, when acid or alkali is added to it.

pH = pKa + log[base] / [acid]

Considering equimolar concentration of acid and base

pH = 3.75 + log(x)/(x)

pH = 3.75 + log (1)

pH = 3.75 + 0

pH = 3.75

Hence,

The optimum pH of formic acid - formate buffer is 3.75

Learn more about pH here ;

https://brainly.com/question/491373

#SPJ1

How many grams of oxygen are contained in a sample of H2O that also contains 3.85 moles of hydrogen atoms?

Answers

Answer:

30.8 g oxygen

Explanation:

There are 1/2 as many Oxygen moles as hydrogen moles in H2O

so there are   3.85 / 2    * 16    gm of oxygen = 30.8 gms oxygen

question 2 of 30
Which of the following is a reduction half-reaction?
OA. Cl₂(1)→ Cl₂(s)
OB. 2Cl + 2e → Cl₂
OC. Cl₂ → 2Cl + 2e
OD. 2C1+ + 2e → Cl₂
SUBMIT

Answers

Answer: D

Explanation:

Reduction involves the gaining of electrons.

This eliminates choices A and C.

However, charge must be balanced, and this is not the case for choice B, but it is the case for choice D

How many moles of water form
when would be required to react
with 183.5 g Ba(OH)2 reacts with
excess HBr?

2HBr + Ba(OH)2 → BaBr2 + 2H₂O

[?] mol H₂O

Answers

That answer is 2.12 mol H2O

14- Which statements about acids and bases are correct? (1 mark) 1- An acid reacts with a metal to give off hydrogen. 2- A base reacts with an ammonium salt to give off ammonia. 3-An acid reacts with a carbonate to give off carbon dioxide. 4- Alkaline solutions are orange in methyl orange.
A) 1, 2 and 3
B) 1, 2 and 4
C) 1, 3 and 4
D) 2, 3 and 4​

Answers

Answer:

a)

Explanation:

4th is incorrect.

Alkaline solutions are yellow in methyl orange.

Answer

Which statements about acids and bases are correct ?

A) 1, 2 and 3

<3

How many grams of methane,
CH4, are produced from the
complete reaction of 5.15 moles
of carbon monoxide, CO?

CO+ 3H₂ → H₂O + CH4

[? ] g CH4

Answers

Answer:

82.606g

Explanation:

[tex]5.15mol CO* \frac{1 mol CO}{1 mol CH4} *\frac{16.04 g CH4}{1 mol CH4} =82.606g CH4[/tex]

Prepare a project report on various samples of
a) a mixture
b) a compound
c) an element ( metal or non metal)
( 2 from each ) highlighting the main characteristics features of elements, compounds and mixtures.

Answers

Answer:

please mark me as brain list

Explanation:

Any substance that contains only one kind of an atom is known as an element. Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P4) or sulfur (S8) cannot be broken down into simpler substances by these reactions

Example: Water decomposes into a mixture of hydrogen and oxygen, on the other hand, cannot be decomposed into simpler substances. They are therefore the elementary, or simplest, chemical substances elements.

Each element is represented by a unique symbol. The notation for each element can be found on a periodic table of elements.

The elements can be divided into three categories that have characteristics properties: metals, nonmetals and semimetals. Most elements are metals, which are found on the left and toward the bottom of the periodic table. A handful of nonmetals are clustered in the upper right corner of the periodic table. The semimetals can be found along the dividing line between the metals and the nonmetals.

how is uranus and saturn similar

Answers

Answer:

Like Saturn, Uranus has rings and moons. But unlike Saturn — and indeed every other planet in the solar system — the ice giant is tipped on its side. In other words, rather than spinning like a top as it circles the sun, Uranus rolls around on its side.

Explanation:

they have rings and moons and are cold

You test your hypothesis by completing a(n) _________.

Answers

You test your hypothesis by completing an experiment.

How we test our hypothesis?

We test our hypothesis by performing experiment or research because in an experiment, we test our hypothesis and collect data in order to draw a conclusion from it.

So we can conclude that you test your hypothesis by completing an experiment.

Learn more about hypothesis here: https://brainly.com/question/11555274

#SPJ1

what will happen when a wax candle burned in air with limited oxygen?​

Answers

Answer:

The molecules of carbon dioxide are heavier than air. When a result, as they descend over the flame and candle, they push the oxygen and other air molecules out of the path. The oxygen can no longer react with the wax when it is pushed away from the wick. The flame is put out as a result.

Answer:

if the candle is burned in air with limited oxygen supply the candle will go out of fire as the oxygen is reducing....

Explanation:

Hope It Helps!!!

A balloon sits in the sunlight causing it to heat up and explode. Which of the following
explains what happened the best:

a. the particles of gas inside the balloon moved faster and decreased pressure in
the balloon, causing it to explode
b. the particles of gas inside the balloon moved faster and increased pressure in
the balloon, causing it to explode
c. the particles of gas outside the balloon moved faster and decreased pressure
on the balloon, causing it to explode
d. the particles of gas outside the balloon became more excited moved faster and
increased pressure on the balloon, causing it to explode

Answers

I think it’s A, the particles of gas inside the ballon move faster and decrease pressure in

Which characteristic of money explains why an old dollar is worth as much as a crisp, new dollar?

Answers

The characteristic is uniformity.

Uniformity of money

Money is said to be uniform because irrespective of the nature it exists, the same amount must have the same purchasing power.

For example, a dollar in paper form and a dollar in coin form must be able to buy the same 1 dollar worth of goods.

Thus, a dollar bill, irrespective of its age, has the same purchasing power as a new, crisp dollar bill.

More on uniformity of money can be found here: https://brainly.com/question/17039370

#SPJ1

neutral grain spirit is essentially the same as

Answers

The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.

Meaning of neutral grain spirit

neutral grain spirit can be defined as raw material that is very concentrated with alcohol used to produce strong alcoholic products.

neutral grain spirit as the name implies is neutral in nature that is it can be blended with any other alcoholic product.

In conclusion, The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.

Learn more about ethyl alcohol: https://brainly.com/question/1049383

#SPJ11

in an electron configuration code, superscripts placed on a sublevel indicate the number of ?

Answers

Number of electrons

What type of bond is formed between the following elements/molecules (ionic, polar covalent, or nonpolar covalent)?

Answers

Answer:

1.) Ionic

2.) Nonpolar Covalent

3.) Polar Covalent

Explanation:

Ionic bonding generally occurs when a metal and nonmetal wish to donate/receive electrons from each other. These bonds are between two atoms with a large electronegativity difference. In the first diagram, potassium (K) is a metal and chlorine (Cl) is a nonmetal. As you can see, after the reaction, potassium donates an electron to chlorine.

Nonpolar covalent bonding occur when atoms of practically the same electronegativity combine. As such, atoms of the same nature have a zero electronegativity difference and thus always form these bonds.

Polar covalent bonding generally occurs between two nonmetals. These atoms have an intermediate size electronegativity difference. Carbon (C) and chlorine satisfy this rule.

In this lab, you will figure out who was guilty of the classroom food mess by determining which macromolecules are present in the mystery food sample.

Rephrase this statement as a scientific question you can answer through investigation.
PLEASE I NEED UR HELP!!!!! WORTH 100 POINTS

Answers

The scientific question that can be answered through investigation will be:

"Which of the four types of macromolecules, and in which proportions, are present in the food sample?"

What is scientific question ?

A scientific question is a question that may lead to a hypothesis and help us in. answering (or figuring out) the reason for some observation.

A scientific question simply means a question where a researcher designs a question in order to get an answer to a particular investigation.

According to this question,

Since the researcher wants to know the person responsible for the classroom good mess by determining which macromolecules are present in the mystery food sample, then the question will be "Which of the four types of macromolecules, and in which proportions, are present in the food sample?"

Learn more about experiments here ;

brainly.com/question/13271957

#SPJ1

Suppose that you add 26.7 g of an unknown molecular compound to 0.250 kg of benzene, which has a K f Kf of 5.12 oC/m. With the added solute, you find that there is a freezing point depression of 3.89 oC compared to pure benzene. What is the molar mass (in g/mol) of the unknown compound

Answers

From the calculation, the molar mass of the solution is 141 g/mol.

What is the molar mass?

We know that;

ΔT = K m i

K = the freezing constant

m = molality of the solution

i = the Van't Hoft factor

The molality of the solution is obtained from;

m = ΔT/K i

m = 3.89/5.12 * 1

m = 0.76 m

Now;

0.76 =  26.7 /MM/0.250

0.76 = 26.7 /0.250MM

0.76 * 0.250MM =  26.7

MM= 26.7/0.76 * 0.250

MM = 141 g/mol

Learn more about molar mass:https://brainly.com/question/12127540?

#SPJ12

Determine if the following is a compound , Element or Mixture

Answers

Compound is a group of same molecules, Element is a group of same atoms and mixture is combination of two or more pure substances.

What are Molecules ?

Molecules are the combination of two or more different atoms combine in a fixed ratio.

Molecules can be independently founded.

Atoms are always founded in combined state and does not occurs independently except rare earth elements which belongs to 18th group of periodic table.

Chemicals are taken in compound state But they undergo chemical reaction individually in molecular level.

Hence, Compound is a group of same molecules, Element is a group of same atoms and mixture is combination of two or more pure substances.

Learn more compound here ;

https://brainly.com/question/13516179

#SPJ1

pls help

1.
when a magnet spins within a coil of wires, what is produced?
-blue sparks
-glowing light
-nuclear energy
-an electric current

2.
when an electric current flows through a wire:
-a gravitational field is created around the wire
-the wire becomes very cold
-the wire begins to spin
-a magnetic field is created around the wire

help pls​

Answers

Answer:

1d and 2d is the answer. Hope it helps

a burning candle wax reacts with oxygen. after a glass jar is placed over it, the candle goes out. what is the limiting reactant?

Answers

If the candle goes out when a glass jar is placed over it, then oxygen is the limiting reactant.

What is a limiting reactant?

The limiting reactant is the reactant that is present in the least amount. When the limiting reactant is exhausted, the reaction comes to a halt.

Thus, if the candle goes out when a glass jar is placed over it, then oxygen is the limiting reactant.

Learn more about limiting reactant:https://brainly.com/question/14225536?

#SPJ11

Question 10 of 10
Why are railroad tracks built with a flexible expansion and contraction joint?
OA. The tracks have a larger coefficient of linear expansion than the
ground beneath.
B. The two have equal coefficients of linear expansion.
C. The ground beneath has a larger coefficient of linear expansion
than the tracks.
OD. The tracks have a smaller coefficient of linear expansion than the
ground beneath.

Answers

Railroad tracks built with a flexible expansion and contraction joint because the tracks have a larger coefficient of linear expansion than the ground beneath. Hence, Correct opotion is option (A)

Where is linear expansion used?

The linear expansion of a solid under a change in temperature can be measured using Δℓ/ℓ = αΔT and has applications in the ways solids expand and contract in everyday life.

The strain that the object undergoes has implications in engineering when fitting objects among each other.


Hence, Railroad tracks built with a flexible expansion and contraction joint because the tracks have a larger coefficient of linear expansion than the ground beneath. Therefore, Correct opotion is option (A)

Learn more about linear expansion here ;

https://brainly.com/question/14780533

#SPJ1

a sample of helium gas has a volume of 1.00 l. what is the final volume if both the pressure and kelvin temperature each double?

Answers

If the both pressure and temperature of the helium gas is doubled, the final volume is 1.00 Liters.

What is the final volume of the helium gas?

Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

P₁V₁/T₁ = P₂V₂/T₂

Given that;

Initial volume V₁ = 1.00LInitial Pressure = PInitial temperature = TFinal pressure = 2PFinal temperature = 2TFinal volume V₂ = ?

P₁V₁/T₁ = P₂V₂/T₂

P₁V₁T₂ = P₂V₂T₁

V₂ = P₁V₁T₂ / P₂T₁

V₂ = ( P × 1.00L × 2T ) / ( 2P × T )

V₂ = ( 2.00L × P × T ) / ( 2 × P × T )

V₂ = ( 1.00L × P × T ) / ( × P × T )

V₂ = 1.00L

If the both pressure and temperature of the helium gas is doubled, the final volume is 1.00 Liters.

Learn more about the combined gas law here: brainly.com/question/25944795

#SPJ11

Other Questions
Biology 1 a What substances must a plant take in, in order to carryon photosynthesis?b Where does it get each of these substances from? momentum? b. A student claim that he can produce linear momentum in carrom men with the help of a striker. Is his claim true? Explain. [2] inciple of conservation of linear momentum. momentum ? b . A student claim that he can produce linear momentum in carrom men with the help of a striker . Is his claim true ? Explain . [ 2 ] inciple of conservation of linear momentum . I need help pls help What are the slope and the y-intercept of the linear function that is represented by the graph?answer C is The slope is Negative three-fourths, and the y-intercept is 3.answer D is The slope is Negative three-fourths, and the y-intercept is 4 CAN SOMEONE PLS HELP ME WITH BOTH OF THESE QUESTIONSEXPLANATION IS NOT NEEDEDWILL MARK BRAINLIEST What information does the audience learn from Romeo and Juliet play's prologue At a gymnastics meet, twenty gymnasts compete for first, second, and third place.How many ways can first, second, and third place be assigned Company A wants to issue 60 bonds. Each bond has a 7% coupon bond with semi-annual payments, a par value of $1000, 30 years to maturity, and a yield to maturity of 6.7%. How much will Company A receive when it sells the bonds Find the equivalent exponential expression. [(-4)^5]^3 A client received chemotherapy 24 hours ago. Which precautions are necessary when caring for the client Find the distance between the points (2, 3) and (4, 7). 1. When building a house using bricks a damp course is laid just above the brick foundation. Explain why the damp course is necessary a nation can be prosperous only by the coordinating role of legislature , executive and judiciary . analyze this statement . A company purchased new equipment for $52,000. The company paid cash for the equipment. Other costs associated with the equipment were: transportation costs, $2,600; sales tax paid $2,900; and installation cost, $3,100. The cost recorded for the equipment was: Which is not an example of static electricity?A. Clothes sticking together in the dryerB. Getting shocked when you touch a door knobC. plugging in a lamp Answer asap Classify this triangle. (image down below) (Acute scalene triangle. (Obtuse isosceles triangle. (Right isosceles triangle (Right scalene triangle? How many steps did all of sweatcoin users take in total during first 5 months of v2022?. if the figure forms the base of a right solid 110 centimeters high, find the surface area Microbial control methods usually target any of the following cellular components except which one?. Identify the antonym:John faced much adversity during his long life.A. Hardship B. Misfortune C. Trouble D. Good luck