Answer:
0.219 mol HCI
Explanation:
Iron(II) sulfide reacts with hydrochloric acid according to the reaction:
FeS (s) + 2HCl (aq) → FeCl2 (s) + H2S (g)
A reaction mixture initially contains 0.223 mol FeS and 0.665 mol HCl.
Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?
How many moles of gas are present at a pressure of 1.00 atm in a container that is 4.0 liters in a room that is 25°C?
A) 0.013 mol
B) 1.9 mol
C) 0.16 mol
D) 6.1 mol
One mole of gas is in a 2.0 L container at 1.0 atm pressure and 20°C. If the volume is doubled, and the temperature remains constant, what will happen to the pressure?
A) The pressure will quadruple.
B) The pressure will double.
C) The pressure will decrease by half. D) The pressure will decrease by one-quarter.
Answer:
A) 0.013 mol
Explanation:
B) The pressure will double.
How does air flow when a low-pressure center occurs in the
atmosphere?
Answer:
A
Explanation:
It is so because the low air pressure create vacuum and the air from high pressure area move toward the low air pressure.
If a gas is cooled from 222 K to 125 K and the volume is kept constant, what would be the final
pressure if the original pressure was 760 mmHg?
Fill in the blanks 2. A forest is a purtier of- and following
Answer:
Odors and pollutant gases
Explanation:
ionization refers to the process of what
Answer:
Any process that leads to the dissociation of a neutral atom or molecule into charged particles ions; the state of being ionized.
Explanation:
Please..................
Sorry so what I think u should do is ask your teach or look up on how to do this problem
what happens when water changes from a solid to a liquid to a vapor
Answer:
It forms a water cycle!
Hope it helps!!!
10 gram sample of methane (CH 4 ) has the same number of molecules as 10 gram sample of O 2
The given question is incomplete. The complete question is:
10 gram sample of methane [tex](CH_4)[/tex] has the same number of molecules as 10 gram sample of [tex]O_2[/tex]. True or False
Answer: Thus the statement is False.
Explanation:
According to avogadro's law, 1 mole of every substance contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar Mass}}[/tex]
1. [tex]\text{Number of moles for methane}=\frac{10g}{16g/mol}=0.625moles[/tex]
Now 1 mole of [tex]CH_4[/tex] molecule contains = [tex]6.023\times 10^{23}[/tex] of molecules
0.625 mole of [tex]CH_4[/tex] molecule contains = [tex]\frac{6.023\times 10^{23}}{1}\times 0.625=3.76\times 10^{23}[/tex] molecules
2. [tex]\text{Number of moles for oxygen}=\frac{10g}{32g/mol}=0.3125moles[/tex]
Now 1 mole of [tex]O_2[/tex] molecule contains = [tex]6.023\times 10^{23}[/tex] of molecules
0.3125 mole of [tex]O_2[/tex] molecule contains = [tex]\frac{6.023\times 10^{23}}{1}\times 0.3125=1.88\times 10^{23}[/tex] molecules
The number of molecules are different.
Helppppp pleaseeee xx
Answer:
2.5 moles of O₂ = 5 moles of H₂O
Explanation:
The balanced equation for the reaction is given below:
2H₂ + O₂ —> 2H₂O
From the balanced equation above,
1 mole of O₂ reacted to produce 2 moles of H₂O.
Finally, we shall determine the number of mole of H₂O produced by the reaction of 2.5 moles of O₂. This can be obtained as follow:
From the balanced equation above,
1 mole of O₂ reacted to produce 2 moles of H₂O.
Therefore, 2.5 moles of O₂ will react to produce = 2.5 × 2 = 5 moles of H₂O.
Thus,
2.5 moles of O₂ = 5 moles of H₂O
Is it possible for a reaction with + ΔG° to still be spontaneous in the forward direction? Explain.
Answer:
See explanation.
Explanation:
Hello!
In this case, according to the thermodynamic definition of the Gibbs free energy:
[tex]\Delta G=\Delta H-T\Delta S[/tex]
In the scenario by which G>0 (nonspontaneous) it would be possible for reaction to have a G<0 (spontaneous) if:
- If H>0 and S>0, then the temperature should be increased until the process was entropy-driven for it to be possible.
- If H> and S<0, then it'd be impossible to have an spontaneous process.
- If H<0 and S>0 then the process was not spontaneous.
- If H<0 and S<0 it is possible if the temperature is not high enough to ensure the process is enthalpy-driven.
Best regards!
How many moles is 8.42 x 10^22 representative particles of iron (III) oxide?
Answer:
1 Mole = 602 billion trillion. 602,000,000,000,000,000,000,000; 6.02 X 1023 (this is known as Avogadro's number) ... 1 mole of H2O= about 1/3 of a cup (18 mL). It is helpful in ... x 1023 particles. Note: Particles could refer to atoms, molecules, formula units ... How many moles of Sulfur (S) are in 1.8 x 10 24 atoms of sulfur ?
Explanation:
TRUE OR FALSE! Please help
Changing the size and shapes of wood would be a chemical change.
O True
O False
Answer:
False.
Explanation:
False because there's no chemicals making change. its a physical change
Set of degenerate orbital in germanium
Answer:
Which set of orbitals are degenerate?
Degenerate is used in quantum mechanics to mean 'of equal energy. ' It usually refers to electron energy levels or sublevels. For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy, as shown in the diagram.
Explanation:
Answer:
Electron orbitals having the same energy levels are called degenerate orbitals, For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy.
How many moles is 130g of CoCl2
Answer:
1 mol
Explanation:
The mass of CoCl2 is 129.83. 130 divided by the mass is 1. This is to convert the mass given to mols that exist in the sample.
Which property among the following is best suitable for metalloids
1 Brittle and behaves like a non-metal
2 Have the property of metals and non-metals
3 Malleable and ductile
4 Conducts electricity and behaves like a metal
Answer:
2. Have the property of metals and non-metals
Explanation:
A metalloid is a substance that posseses the characteristics of both metals and non-metals. In other words, it can be said to be an intermediary between metals and nonmetals.
According to this question, a metalloid
What is the molar mass of NH4?
Answer:
96.09 grams per mole
Explanation:
The chemical formula of ammonium carbonate is (NH4)2CO3, a chemical compound with a molar mass of 96.09 grams per mole.
Sorry if its wrong! ~Kira
explain the following terms using examples basic oxide acidic oxide an amphoteric oxide
Answer:
Example of basic Oxide: sodium oxide which reacts with water to produce sodium hydroxide.
Example of Acidic Oxide: SO² in acidic oxide reacts with water and produces an acid.
Example of Amphoteric Oxide: ZnO(s)+2HC(aq)→ ZnCI2(aq)+H2O (I)
Explanation:
Hope this helped Mark BRAINLEST!!!!
Among the theories of man's state of nature,which is/are the most credible/Reasonable?,
trees... they bring life nd without trees, there wouldnt be life
Most objects are not able to float in midair. What must be occurring for these rings to float instead of fall
Answer:
magnetic force
Explanation:
A magnet is defined as an object that can attract other objects that are made of iron. Magnets also repels or push away other magnets. Every piece of magnets have two poles namely, a south pole and a north pole. When one magnet comes near another magnet, it exerts a magnetic force on the other magnet. This force can be attractive force or repelling force depending upon the poles surface of the magnet that are close to each other.
Like pole repel each other while opposite poles attract each other.
In the context, the rings of magnet are floating in the air because there is a magnetic force that is repelling the like surfaces or the like poles of these magnetic rings.
Balance the 2 chemical equation below: 1) _____H2 + _____02 ---> _____H20 2) _____CH4 + _____Cl2 ---> _____CCl4 + _____HCl Your answer:
Answer:
1.) 2H2 + O2 ---> 2H2O
2.) CH4 + 4Cl2 ---> CCl4 + 4HCl
Explanation:
In order to balance the equation, you have to make sure there are the same amount of each element on both sides.
Ex (#1). By adding the coefficients infront of H2 and H20, You now have 4 hydrogen's and 2 oxygens on the left side as well as 4 hydrogens and 2 oxygens on the right side.
Sorry if that's confusing, but hope this helps! :)
How many moles are in 23 grams of potassium
Answer:
.588mol K
Explanation:
K has a molar mass of 39.1 g/mol. This means that one mole of potassium has a mass of 39.1 grams. We can use stoichiometry/dimensional analysis to figure out how many moles is equal to 23 grams.
[tex]23.0g K(\frac{1 mole}{39.1} ) = .588mol K[/tex]
What volume of concentrated 15M H2SO4 is required to prepare 0.75 liters of a 6.0M solution?
Answer:
30 ml
Explanation:
giving 300 pts if u get it correct I will put up a separate link so u can get the
Which gases makes up most of Earth’s atmosphere?
Question 1 options:
argon and water vapor
carbon dioxide and oxygen
nitrogen and oxygen
oxygen and argon
Question 2 (1 point)
What is the correct order of earth's atmospheric layers from bottom to top?
Question 2 options:
Mesosphere, Stratosphere, Troposphere, Thermosphere, Exosphere.
Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere
Stratosphere, Troposphere, Mesosphere, Thermosphere, Exosphere.
Thermosphere, Mesosphere, Stratosphere, Troposphere Exosphere.
Question 3 (1 point)
Which characteristics makes the mesosphere different from the other layers of the atmosphere?
Question 3 options:
It is the lowest layer
It is the largest layer
It is the coldest layer
It is the thinnest layer.
Question 4 (1 point)
Based on the diagram above which change can be observed when moving from the troposphere into the stratosphere?
Question 4 options:
Air pressure decreases
Air particles increase
Temperature increases
Question 5 (1 point)
Certain gases in Earth’s atmosphere slow down the movement of energy away from Earth’s surface by absorbing and re-emitting infrared radiation. This helps to keep the surface of Earth at an average temperature of 15°C (59°F). What is this process called?
Question 5 options:
The Coriolis Effect
The Solar Effect
The Greenhouse Effect
The Global Warming Effect
Question 6 (1 point)
How might the increase of volcanic eruptions affect Earth?
Question 6 options:
It might produce more ozone in the atmosphere
It might decrease temperature across Earth
It might increase the carbon dioxide in the atmosphere
It might cause the Earth’s surface to absorb more oxygen.
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Determine which heat transfers below are due to the process of conduction.
I) You walk barefoot on the hot street and it burns your toes.
II) When you get into a car with hot black leather seats in the middle of the summer and your skin starts to get burned when you touch the seats.
III) A flame heats the air inside a hot air balloon and the balloon rises.
IV) A boy sits to the side of a campfire. He is 10 feet away, but still feels warm.
Question 1 options:
I & II
III & IV
I, II, & IV
II, III, IV
Question 2 (1 point)
Saved
The heat transfer depicted in the image is MOST likely
Question 2 options:
circulation
conduction
convection
radiation
he method of heat transfer by which the sun energy reaches the earth is
Question 3 options:
conduction
convection
radiation
solaration
Question 4 (1 point)
Carol owns a two story house with a heating and cooling unit on each floor. In the winter she mostly uses the downstairs unit because the volume of warm air __________ warming the whole house through __________.
Question 4 options:
rises, convection
sinks, conduction
rises, conversion
sinks, radiation
Question 5 (1 point)
The prevailing westerlies are global winds that move from west to east and push most weather in this direction in the United States.
Question 5 options:
True
False
Question 6 (1 point)
Due to the Earth's rotation, global winds follow a curved path known as___.
Question 6 options:
Sea breezes
Wind Direction
Coriolis effect
Wind Chill effect
perspex and polythene are two examples of what?
What is the final chemical equation from the following intermediate chemical equations?
2 equations. First: upper P subscript 4 upper O subscript 6 (s) right arrow upper P subscript 4 (s) plus 3 upper O subscript 2 (g). Second: upper P subscript 4 (s) plus 5 upper O subscript 2 (g) right arrow upper P subscript 4 upper O subscript 10 (s).
Upper P subscript 4 upper O subscript 6 (s) plus 2 upper O subscript 2 (g) right arrow upper P subscript 4 upper O subscript 10 (s).
Upper P subscript 4 upper O subscript 6 (s) plus 8 upper O subscript 2 (g) right arrow 2 upper P subscript 4 (s) plus upper P subscript 4 upper O subscript 10 (s).
Upper P subscript 4 upper O subscript 6 (s) plus 15 upper O subscript 2 (g) right arrow upper P subscript 4 (s) plus upper P subscript 4 upper O subscript 10 (s).
Upper P subscript 4 upper O subscript 6 (s) StartFraction 5 over 3 EndFraction upper O subscript 2 (g) right arrow upper P subscript 4 upper O subscript 10 (s).
pls hurry
Answer:
A
Explanation:
edge2021
Answer:
A.
Explanation:
Edge
Help me anyone? Thanks!!!!
True or false. The geological features of the eastern part of South America and western Africa matched each other.
Answer:
True
Explanation:
If you look at a map they look like they connect and the have similarities like mountains
Answer:
It is true c:, I hope I helped yoy
= 25 X 5 = (use the correct number of sig figs)
Answer:
1.25 *10^2
Explanation:
25*5 = 125
= 1.25 *10^2
One of the possible reactions for nuclear fusion involves the collision of 2 deuterium
nuclei. Complete the reaction by identifying the missing particle: 2/1H + 2/1H ——> 1/0n +?
Answer:
³₂He
Explanation:
From the question given above, the following equation was obtained
²₁H + ²₁H —> ¹₀n + __
Let ᵇₐX be the missing part of the equation. Thus, the equation becomes:
²₁H + ²₁H —> ¹₀n + ᵇₐX
Next, we shall determine b, a, and X. This can be obtained as follow:
2 + 2 = 1 + b
4 = 1 + b
Collect like terms
b = 4 – 1
b = 3
1 + 1 = 0 + a
2 = 0 + a
a = 2
ᵇₐX => ³₂X => ³₂He
Thus the equation is:
²₁H + ²₁H —> ¹₀n + ᵇₐX
²₁H + ²₁H —> ¹₀n + ³₂He
The missing part is ³₂He