# A sealed cubical container 20cm on a side contains three times Avogadro's number of molecules at a tempature

77,699 results

**PHYSICS**

A sealed cubical container 26.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 15.0°C. Find the force exerted by the gas on one of the walls of the container.

**physics**

A sealed cubical container 30.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 20.0°C. Find the force exerted by the gas on one of the walls of the container.

**Thermal Physics, Kinetic Theory of Gases**

Oxygen (O2) has a molar mass of 32 g/mol. (e) Suppose an oxygen molecule traveling at this speed bounces back and forth between opposite sides of a cubical vessel 0.10 m on a side. Find the average force it exerts on one of the walls of the container. (Assume that the molecule...

**chemistry**

If a mole of hydrogen gas (H2) contains 6.02 x 10^23 molecules, how many molecules are there in 10.0 moles of hydrogen gas? Answer 60.20 x 10^23 molecules 6.0 x 10^23 molecules 6.02 x 10^20 molecules 6.02 x 10^24 molecules None of these is correct. would it be 6.02x10^24 or ...

**Physics**

An equal amount of heat is transferred to two containers containing water at the same temperature. If the second container contains three times as many water molecules as the first, how do the final temperatures compare?

**Physics**

An equal amount of heat is transferred to two containers containing water at the same temperature. If the second container contains three times as many water molecules as the first, how do the final temperatures compare?

**Math**

A rectangular container 30cm by 20cm by 15cm was completely filled with water. The water was poured into another container which measured 25cm by 20cm by 28cm. What was the height of the second container?

**Chemistry**

A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium undergoes â decay with a half-life of 12.32 years. How long has the container been sealed if analysis of the contents shows there are 5.25 mol of 3H and 6.35 mol of 3He present...

**physics**

How much positive charge is in 0.8 kg of neon? The atomic weight (20.1797 g) of neon contains Avogadro’s number of atoms, with each atom having 10 protons and 10 electrons. The elemental charge is 1.602 × 10−19 C and Avogadro’s number is 6.023 × 1023 . Answer in ...

**science**

Lamont has a dark container. He knows that the container has a mass of 2.0 g when it is empty. He cannot see inside the container. However, he is able to use a balance to determine that the container has a mass of 2.7 g. What can Lamont conclude about the container? It ...

**Chemistry**

If I count out Avogadro's number if CO2 molecules how much will my piles of molecules weigh? Can someone show me how to get the answer. I know the answer is 44g

**math**

a cubical container is half filled with water if the volume of water in the container is 500cm3 find the length of one edge of container?

**Chemistry-**

If I was trying to find out the number of molecules(N) using moles x avogadro's number, what units would N have?

**chemistry**

Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product mixture be? number of NH3 molecules? number of N2 ...

**CHEMISTRY**

what is the symbol for chromium (II) sulfate? You mean the formula? CrSO4 yes! thanx!!!!!! do u know how to find the number of molecules or atoms in a mole? The number of atoms in a mole is called Avogadro's number, the value of which is approximately 6.02 × 10^23. There are ...

**Physics**

(a) An ideal gas occupies a volume of 1.6-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. (b) If the pressure of the 1.6-cm3 volume is reduced to 1.6 10-11 Pa (an extremely good vacuum) while the temperature remains constant, ...

**physics**

sealed metal container can withstand a pressure difference of 0.630 . The container initially is filled with an ideal gas at 12 and 0.80 To what temperature can you cool the container before it collapses? (Ignore any changes in the container's volume due to thermal expansion

**Math**

A cubical container measures 5 inches. On each edge. What does it cost to fill the container at $2.88 per cubin in.? formula for this help?

**Chemistry**

4NH3+5O2 = 4NO + 6 H20 If a container were to have 10 molecules of O2 and 10 molecules of NH3, initially, how many total molecules (reactants plus products) would be present in the container after this reaction goes to completion?

**math**

the serface of our earth is 20'c for every km, k below the surface the tempature increses by 10'c. let t represent the tempature in 'c 1a write an equation that represent the relationship between disatnce k and t tempature 1b. what is the slope and and y-intercept

**chemistry**

A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)--> <-- PCl5(g) Calculate the equilibrium concentration of all species.

**chemistry**

A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)--> <-- PCl5(g) Calculate the equilibrium concentration of all species.

**Manometer**

A manometer is used to measure the pressure of a gas in a container one side is connected to the container the other side is open to the atmosphere. A manometer contains water of density 1000kg/m^3 and the head is 250mm. Calculate the gauge pressure of the gas in a container.

**chemistry**

Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product mixture be? number of NH3 molecules number of N2 ...

**chemistry**

4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) If a container were to have 16 molecules of NH3 and 16 molecules of O2 initially, how many total molecules (reactants plus products) would be present in the container after this reaction goes to completion? (Use only whole numbers ...

**9th grade (math)**

the surface of our earth is 20'c for every km, k below the surface the tempature increses by 10'c. let t represent the tempature in 'c 1a write an equation that represent the relationship between disatnce k and t tempature 1b. what is the slope and and y-intercept

**Chemistry**

How many atoms are present in a sample of 2.0 x 10^23 molecules of C7H5(NO2)3? Do you use Avogadro's Number? And please show work.. :)

**Math**

If a square of x times cm times x times cm is removed from the corner of the 20cm x 20cm paper, write down an equation which will represent the volume of the box made from the remaining paper.

**URGENT 8th Grade Math**

Write a word phrase for the algebraic expression 3x-7. The difference of three times and number x and seven. The difference of seven and three times a number x. Three times a number x fewer than seven.** The quotient of three times a number x and seven. Steve or Ms.Sue am I ...

**Solid Geometry**

Find the Lateral area in cm square of the following right pryramid. 1. Base is regular octagon of side 20cm and altitude of 20cm. 2. Base is regular hexagon of side 20cm and altitude of 30cm. 3. Base is regular hexagon of side 30cm and slant height of 50cm.

**physics**

Oxygen molecules contain two oxygen atoms, and carbon dioxide molecules contain one atom of carbon and two atoms of oxygen. How does the total number of molecules in 1 liter of oxygen compare with the total number of atoms in 1 liter of carbon dioxide if they are both at the ...

**Science**

Consider the following reaction, 4 PH3(g) + 8 O2(g) → P4O10(s) + 6 H2O(g) If a container were to have 32 molecules of PH3 and 32 molecules of O2 initially, how many total molecules (reactants plus products) would be present in the container after this reaction goes to ...

**Science**

1.)which best describes a cave ecoystem?(1 point) A.)Plentiful food, widely varying tempature B.)Plentiful food , constant tempature C.)Very little food , widely varying tempature D.)Very little food, contant tempature i put D am im correct?

**math**

The number of sweets in Container X was 24 more than Container Y. When I removed 42 sweets from Container X and transfered then in Container Y,the number of sweets in Container Y became thrice of Container X. Find the number of sweets in Container X first.

**College Alebra**

Solve the following using system of equations. The sum of three numbers is 26. The middle number numerically is one more than three times the smallest number. The largest number is two times less than five times the smallest number. Find the three numbers.

**college math**

1). Sum of three numbers is 45. One number is five more than the second number.It is also twice the third.Find the numbers. 2).Perimeter of quadrilateral is 52in. Longest side is is three times as long as the shortest side. The other two sides are equally long and are 5 in. ...

**chemistry**

the number of molecules in 6.843*10^-2 kg of Al(NO3)3 is: and this is what i have done so far... 1st i converted the kg to g which is 6.843*10^-5. then i figured out the moles:6.843*10^-5/213.01 i got 3.21*10^-7. i then multiplied this number by avogadro's number(6.022*10^23) ...

**chemistry**

when there is 3.0 x 10^20 molecules in a closed container, the pressure is 1.2 atm. Using a pumper 1.5 x 10^20 more molecules are added to the container. what is the new pressure?

**Chemistry**

In a fixed volume container, 6*10^23 molecules of a gas exert a pressure of 12 N/m^2. If 12*10^23 molecules of gas were added to the container, what would the pressure become? PV=nRT P=pressure in atm V=volume in L T=absolute (kelvin) temperature R=0.082 L atm/mole K n=number ...

**chemistry**

I need help setting up this problem: A 5.0 sample of O2 is in a container at STP. What volume is the container and how many molecules of O2 in the container and how many atoms of oxygen?

**Math! Please Check My Answers**

Key: ☺ = My Answer! 2. Write a word phrase for the algebraic expression. 3x - 7 A. The difference of three times a number x and seven. B. The difference of seven and three times a number x. C. Three times a number x fewer than seven. ☺ D. The quotient of three ...

**physics/chemistry**

(a) An ideal gas occupies a volume of 1.0 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container. i got that right to be 2.5e19 molecules (b) If the pressure of the 1.0 cm3 volume is reduced to 1.0 10-11 Pa (an extremely good vacuum) ...

**biology**

1 mole of an element or compound contains 6.20 times 10 to the 23rd power atoms or molecules of the element or compound. 1 mole of an element or compound has a mass equal to its mass number (or molecular weight) in grams. For example, 1 mol of hydrogen gas (H2) contain 6.02 ...

**Math**

You roll a number cube and get a one 7 times, a two 8 times, a three 5 times, a four 9 times, a five 8 times, and a six 5 times. What is the experimental probability of rolling an odd number?

**Algebra =/**

One Number Added To Three Times Another Number Is 24. Five Times The First Number Added To Three Times The Other Number Is 36. FInd The Numbers HELP PLEASE!!!!! :)

**Chemistry**

A sealed flask containing 1.0 mole of H (g) and a sealed flask containing 2.0 moles of He(g) are at the same. 2 temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

**Chemistry**

A sealed flask containing 1.0 mole of H2(g) and a sealed flask containing 2.0 moles of He(g) are at the same temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

**physics**

A sealed container contains 1 mole of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 200 m/s to 202 m/s. (Hint: Assume the probability of neon atoms having speeds between 200 m/s and 202 m/s is constant).

**physics**

A sealed container contains 1 mole of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 200 m/s to 202 m/s. (Hint: Assume the probability of neon atoms having speeds between 200 m/s and 202 m/s is constant).

**Honors Biology**

Can someone check my work please? We had to fill in the blanks of a short paragraph with the correct keywords, but all these acronyms (I think that's what they're called ;P) confuse me. My answers will be in parentheses. " The Calvin Cycle begins when one molecule of carbon ...

**AP Chemistry**

Equal masses of Ne and Ar are placed in a rigid, sealed container. If the total pressure in the container is 1.2 atm, what is the partial pressure of Ar?

**Chemistry**

Consider a 980-mL container at 133 °C in which the pressure of nitrogen oxide is 0.394x106 Pa. a) What mass of nitrogen oxide (in g) is present in this container? b) How many molecules is this? (a)----g (b)-----molecules

**Algebra I**

The sum of three numbers is 147. The second number is 4 more than two times the first number. The third number is five less than three times the first number. Find the three numbers. Can you please solve it? I have no idea how to do this. Thanks a lot for any help!

**algebra**

A jar contains $34.75 in quarters and dollar coins. If the number quarters is three more than four times the number of dollars, determine the number of each type of coin.

**Math**

You have a 7-liter, and an 11-liter container with no markings on them. Both are empty. You may fill up any of them from the water faucet any number of times, you may empty any of them any time, and you may pour water from one container to the other any number of times. using ...

**begining algebra**

One side of a triangle is three times the shortest side. The third side is 7 feet more than the shortest side. The perimeter is 62 feet. Find all three sides.

**science**

what is the kinetic energy, in J, of a)an Ar atom moving w/ a speed of 650m/s b)a mole of Ar atoms moving w/ a speed of 650m/s? a) K.E. = (1/2) M V^2 For M, use the mass of an Argon atom. It equals 0.040 kg (40 g) divided by Avogadro's number. M must be in kg to get the K.E. ...

**Algebra**

Determine all pairs (m, n) of a two-digit natural number m and a single-digit natural number n satisfying the following conditions. 1) If the number n is given as the number between the two digits of the number m, then a three-digit number is obtained which is 11 times the ...

**Math**

Determine all pairs (m, n) of a two-digit natural number m and a single-digit natural number n satisfying the following conditions. 1) If the number n is given as the number between the two digits of the number m, then a three-digit number is obtained which is 11 times the ...

**Chemistry**

A student places 0.025 moles of solid sulfur and 0.100 moles of nitrogen monoxide gas in a closed 1.00L container and 0°c for several days. Calculate the number of molecules of NO in the 1.00L container after equilibrium is reached, given the following thermodynamic data. I ...

**math**

What is the way to find the answer to the problem....3x+1=10? My teacher told us in class but I just didn't understad it. The idea is to get the x all alone on one side. Subtract one from each side. Then, divide each side by three. 3x + 1 = 10 First subtract 1 from both sides...

**physics**

In Figure 12-68, two identical, uniform, and frictionless spheres, each of mass 4.1 kg, rest in a rigid rectangular container. A line connecting their centers is at 45° to the horizontal. Find the magnitudes of the forces on the spheres from (a) the bottom of the container, (...

**Physics**

48.0 g of oxygen (O2 is diatomic) are confined in a rigid 1.00x10^3 L cubical container at temperature 300.0 K. Find the gas pressure and the force exerted by the oxygen gas on any of the six faces of the cube. Mass number of an oxygen atom is 16.0 1.00L=10^-3 m^3

**Science**

5.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10 M, where it remained constant. Then, the container volume was doubled and equilibrium was re-established. ...

**math**

1.) A 2.5 x 2.5 x 2.5 meter hole was dug for the building's foundation. How many cubic meters of soil were dug? 2.) A cubical container is filled with 15,625 cm3 of sand. How long is each edge of the container? 3.) Kendy has 2 cardboard boxes. One has a dimension of 50x20x30 ...

**Math**

The sum of three numbers is 301. The second number is 3 less than twelve times the first number. The third number is 4 more than seven times the number. Find the three numbers.

**St. Martin**

A container of volume 20.5 cm3 is initially filled with air. The container is then evacuated at 0oC to a pressure of 19 mPa. How many molecules are in the container after evacuation if we assume that air is an ideal gas?

**physics**

A container of volume 14.2 cm3 is initially filled with air. The container is then evacuated at 0oC to a pressure of 32 mPa. How many molecules are in the container after evacuation if we assume that air is an ideal gas?

**Physics**

A container of volume 19.4 cm3 is initially filled with air. The container is then evacuated at 0oC to a pressure of 6.0 mPa. How many molecules are in the container after evacuation if we assume that air is an ideal gas?

**Math**

At 8:00pm,the temps tire was16f by midnight ,the tempature had fallen by 19 f what was the tempature at midnight

**physics problem!!**

If the water molecules in 5.70 g of water (H2O) were distributed uniformly over the surface of the Earth, how many such molecules would there be on 1.40 cm2 of the Earth's surface? -Molar mass Hydrogen gas(H2)=2.02 g/mol -Molar mass Oxygen gas (O2) = 32.0 g/mol -Radius of ...

**physics**

In a gas at standard temperature and pressure, what is the length of the side of a cube that contains a number of molecules equal to the population of the earth (about 6 million people at present)? I know STP is 1 atm and 273K, but I have no clue how to start this problem. Any...

**Word Problem**

A UPS employee, Davis, packs and labels three types of packages: basic packages, business packages, and oversized packages. Business packages take a priority over basic packages, and oversized packages because those customers paid a premium to have guaranteed two-day delivery...

**Chem**

A flexible container at an initial volume of 5.12 L contains 7.51 mol of gas. More gas is then added to the container until it reaches a final volume of 18.3 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the ...

**chem**

A flexible container at an initial volume of 8.15 L contains 2.51 mol of gas. More gas is then added to the container until it reaches a final volume of 12.1 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the ...

**Chemistry**

Container A contains argon gas at 0C and pressure 380mmHg. Container B of volume 700 ml contains neon gas at 25C and pressure of 3atm. Both of these gases are placed in a 2L vessel at 273K and the total pressure is 1.46atm. What is the volume of container A?

**chem**

One mole of an ideal gas is sealed in a 22.4- container at a pressure of 1 and a temperature of 273 . The temperature is then increased to 305 , but the container does not expand. What will the new pressure be?

**chemistry**

One mole of an ideal gas is sealed in a 22.4-L container at a pressure of 1 and a temperature of 273 K . The temperature is then increased to 305 K , but the container does not expand. What will the new pressure be?

**Physics**

I understand there is a relationship between pressure & temperature in a sealed rigid container. An open container is placed in a freezer at -15 degrees C then the door is opened and the cap replaced with the freezer at 1000mb what will the pressure be within the container if ...

**math**

Which of the following best describes the relationship between the size of a one ounce container compared to a one pound container? 1 the size of a one oz container is 16 times the size of a pound container. 2 the size of a one oz container is 1\16 the size of a 1 pound ...

**Chemistry**

Flask a contains 2 liters of ch4 (g) and flask b contains 2 liters of 02 (g) each gas sample has the same 1) density 2) mass 3) number of molecules 4) number of atoms

**Chemistry**

4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it remained constant. A(s) <-------> B(g)+C(g) Then, the container volume was doubled and ...

**MS. SUE - MATH HELP PLEASE**

The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.

**Honors Geometry**

A cylindrical container weighs 36 ounces. Another container made out of the same material is similar to the first container with a height that is three-fourths the height of the first container. To the nearest tenth of an ounce, how much does the second container weigh?

**Math 116**

Translate into an algebraic expression. Use x and y for any variables. The sum of three times a number plus three times another number. The translation is what. Help me I do not understand this problem.

**math help**

Five added to three times a number is 29. can someone help me rewrite these in algrebric form thank you Three more than a number times two and the result is twelve. The sum of plus 7 minus 13 is 27. The product of ten and a number plus eight equals eighty-eight

**Chemistry**

A container is filled with 8.0×10^21 O2 molecules at 9 Celsius and 815 mm Hg. What is the volume in mL of the container?

**Chem**

How many chlorine atoms are in 5.0 g of C2H3Cl3O2? What mass of C2H3Cl3O2 would contain 1.0g Cl? There are 6.02 x 10^23 atoms in a mole of anything. Calculate the molar mass of your compound, that mass will contain 6.02 x 10^23 molecules of that material (whatever it is), then...

**biochemistry**

please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin molecules are spherical, with a diameter of 3....

**Chemistry**

pressure of Ne in sealed container

**Geometry**

In a triangle with integer side lengths, one side is three times as long as a second side, and the length of the third side is 15. What is the greatest possible perimeter of the triangle?

**Chemistry**

A sealed 1.0L flask is charged with .500mol I2 and .500mol Br2 and an equilibrium reaction esues: I2(g)+Br2(g)=2IBr(g) When the container contents achieve equilibrium, the flask contains .84 mol of IBr. What is the value of the eqilibrium constant? (K)

**pressure**

a flexible container at an initial volume of 7.14L contains 9.51mol of gas. more gas is then added to the container until it reaches final volume of 17.1L. assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the ...

**chemistry**

what do coefficents represent in a balanced equation? What would removing air from a sealed container do to the container? What does it mean that "like dissolves like"? Dissolving a solute in a solvent does what to the solven'ts freezing and boiling points? What must be true ...

**Chemistry**

What would be the steps to solving this problem? The aluminum sulfate hydrate [Al2(SO4)3 (times) xH2O] contains 8.20 % Al by mass. Calculate x, that is , the number of water molecules associated with each Al2(SO4)3 unit.

**math**

a cylindrical container has a diameter of 14cm and a height of 20cm and is full of water. The water is poured into another cylinder which has a diameter of 20cm. How deep is the water in the second cylinder?

**Chemistry**

Which of these will contain avogadro number of molecules: 1)22.4dm3 of co2 at 27∘c and 1atm contain 2)44g of at 27∘c and 1 atm 3)2.7dm3 of co2 at 546k and 2atm 4)11.2l of co2 at 273 and 2atm

**Chemistry**

Please help me out... The pressure of a container of fluorine gas with a volume of 1.5L is 678mmHg at 55.0*C. a. If the volume of the fluorine gas increases to 5.0L, what would be the pressure of the gas in atm? The amount and tempature of gas are consistant. b.How many grams ...

**chemistry**

calculate number of dichlorine molecules in a 5.00ml container at 40 degrees Celsius and a pressure of 2.14 x 10^4 Pa.

**Physics**

The professor gave us no background material or explanations for any of these questions. 1. Imagine that molecules of H20 are stacked up in a cubic array, like a large number of cubical boxes. Each water molecule is taken to be at the center of each cube in this array. Let the...