Answer:
0.488atm = Pressure Kr
Explanation:
The total pressure in a mixture of gases could be defined as the sum of the partial pressures of a mixture. For the mixture of gases in the problem:
Total pressure = Pressure He + Pressure Ar + Pressure Ne + Pressure Xe + Pressure Kr
Converting the total pressure to atm:
1252.5mm Hg * (1atm / 760 mmHg) = 1.648 atm
Replacing:
1.648atm = 0.32atm + 0.21atm + 0.44atm + 0.19atm + Pressure Kr
0.488atm = Pressure KrIf we put some water in a plate and allow the plate and allow the plate to lie in sunlight we find that water from the plate disappear moreover even if we keep the plate in the shade it still disappear
Answer:
Evaporation
Explanation:
Evaporation is the process by which water changes from the liquid state to the gaseous state.
Unlike boiling that only occurs at a specific temperature (boiling point), evaporation occurs at any temperature. This explains why water disappear when placed under direct sunlight or under a shade.
3. To find an object's mechanical energy. you add its A kinetic and potential energy B kinetic and thermal energy C potential and thermale energy D kinetic and chemical energy
Answer:
A
Explanation:
The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.
When you heat a sample of gas, what happens to the particles that make up the gas?
A) The particles move faster
B) The particles get bigger
C) The particles slow down
D) The particles get smaller
The particles of the gas move faster when you apply heat to a sample of gas.
WHAT IS A GAS?
A gas is one of the three states which matter can exist. A gas posseses no fixed shape or volume.
A gas is characterized by the ability to diffuse quickly through space because of the very weak attraction of its particles to one another.
WHAT DOES HEAT DO?
Heat (thermal energy) increases the kinetic energy i.e. energy due to motion of the particles, causing them to move faster. In the process, gas particles expands.
Therefore, when heat is applied to a sample of gas, the particles of the gas move faster.
Learn more: https://brainly.com/question/11973814
I need help question 13
What is the IUPAC name of this compound?
Answer:
D
Explanation:
but I am not sure about the answer
Which atom has the lowest(smallest) ionization energy?
A. Na
B.K
C. Me
D. Ca
How does forming a bond make an atom stable?
Answer:
Explanation:
An ionic bond, where one atom essentially donates an electron to another, forms when one atom becomes stable by losing its outer electrons and the other atoms become stable (usually by filling its valence shell) by gaining the electrons. Covalent bonds form when sharing atoms results in the highest stability.
A beekeeper found that when stung by a bee, application of a little solution of sodium hydrogen carbonate helped to relieve the irritation of the affected area.Explain
Answer:
A bee sting releases an acid. When sodium hydrogen carbonate is applied, it neutralizes the acid since it's a base.
Explanation:
The sting of an bee contains formic acid. When an bee stings, it injects the acidic liquid into the skin, similar to ants. The effect of the sting can be neutralised by rubbing moist baking soda (sodium hydrogen carbonate) or calamine solution, which contains zinc carbonate.
Sodium hydrogen carbonate neutralizes the acid present in a bee's sting.
Explanation:
When we get stung by a bee, it releases a formic acid which irritates the affected area.And in order to relieve the irritation, we neutralize the formic acid by using sodium hydrogen carbonate which is basic in nature.Sodium hydrogen carbonate is basic in nature reacts with formic acid present in the sting to relieve the pain or irritation on the skin.The reaction between sodium hydrogen carbonate and formic acid occurs to give sodium formate, water, and carbon dioxide as a product[tex]NaHCO_3+HCOOH\rightarrow HCOONa+H_2O+CO_2[/tex]
Learn more about the acid-base reaction here:
brainly.com/question/3069273?referrer=searchResults
brainly.com/question/15255706?referrer=searchResults
2 K + Cl2 → 2 KCI what type of chemical reaction is this
nvm nvm check comments
Answer:
C
Explanation:
Common sense no offense lol
Explain what a conjugate acid is and what a conjugate base is.
Answer:
A conjugate acid, within the Brønsted–Lowry acid–base theory, is a chemical compound formed when an acid donates a proton to a base—in other words, it is a base with a hydrogen ion added to it, as in the reverse reaction it loses a hydrogen ion
Explanation:
According to the A.P.E.X. glossary:
A conjugate acid is the form a base takes after it gains a hydrogen ion (or proton), and a conjugate base is the form an acid takes after it loses a hydrogen atom (or proton).
is acidity always bad?
Answer:
depends on what you're talking about. Stomach acid benefits us, some fruits like oranges, lemons, and pineapples are acidic.
Explanation:
Answer:
No.
Explanation:
I'm giving 20 points! please it's for a friend not me
Answer:
Three chemical elements: hydrogen, oxygen, and helium.
The difference between metals and metalloids is: metalloids have properties in between those of the metals and non-metals and are semiconductors.
The periodic table is organized by the elemts atomic number, it goes from the element with the lowest atomic number (which is hydrogen) to the element with the highest atomic number (oganesson)
Explanation:
Hope this helps :)
Answer: Thank you for the points.
Explanation:
What happens to that atom of magnesium-24 if it GAINS a NEUTRON? *
Answer: If this atom loses one electron, it will become a cation with a 1+ charge
Explanation:
A student measures the volume of a rock, and then repeats the measurement two times. For the three measurements to be very precise, what must be true about them?
A. The measurements must be very close to the true volume of the rock.
B. The measurements must be very close to one another.
C. At least one of the measurements must be equal to the true volume of the rock.
D. The three measurements must be reported in whole numbers, not decimals.
Answer:
i think b
Explanation:
A student measures the volume of a rock and then repeats the measurement two times. For the three measurements to be very precise the measurements must be very close to one another for rock. Option B is correct.
What is precise?While measuring something is the measured value is close to each other then the result measurement is said to be precise and the phenomena are called precision.
In the measurement of rock, the measured values must be close to each other and do not vary much then only the measurement of students can be precise.
Therefore, Option B is correct, the measurements must be very close to one another for the rock student measures the volume of a rock and then repeat the measurement two times. For the three measurements to be very precise.
Learn more about precise, here:
https://brainly.com/question/1311561
#SPJ2
How and when do real gases differ from ideal gases?
Answer:
As the particle size of and ideal gas is extremely small and the mas is almost zero and no volume ideal has is also considered as a point mass. The molecules of real gas occupy space through they are small particles a d also have volume
1.
a) If 1.08 g of sodium sulfate reacts with an excess of phosphoric acid, how much sulfuric acid is produced? (0.74577)
b) If 0.726 g of sulfuric acid is produced in the laboratory experiment, what is the percent yield of sulfuric acid? (97.3190)
2.
If 3.2 moles of sodium sulfate is used in the reaction, how many formula units of phosphoric acid is needed to completely react?
(1.28427×1024
Answer:
1. a) 0.745 g of H₂SO₄
b) 97.4%
2. 1.28×10²⁴ formula units
Explanation:
First of all, we determine the equations:
3Na₂SO₄ + 2H₃PO₄ → 3H₂SO₄ + 2Na₃PO₄
We determine, the moles of sodium sulfate. (As the acid is in excess, we work with the salt)
1.08 g . 1mol/ 142.04g = 0.00760 moles.
Ratio is 3:3. So 3 moles of salt can produce 3 moles of sulfuric acid,
Then, 0.00760 moles will produce the same amount of acid.
We convert the moles to mass → 0.00760 mol . 98 g/mol = 0.745 g
Percent yield = (Produced yield /Theoretical yield) . 100
(0.726 g / 0.745 g) . 100 = 97.4 %
2. 3 moles of sodium sulfate need 3 moles of phosphoric acid to react
Then, 3.2 moles of salt will react to (3.2 . 2)/3 = 2.13 moles
Let's count the formula units:
2.13 mol . 6.02×10²³ formula units /mol = 1.28×10²⁴ formula units.
In what type of reaction will an acid and a base react with each other?
oxidation-reduction
decomposition
combustion
neutralization
Answer:
answer is D
Explanation:
neutralization
Answer: Neutralization reaction
Explanation: lets look at it this way Since acids have pH below 7 ie pH 2 and bases have pH above 7 ie 13 so to "neutralize" the pH we add them together and thats how neutralization takes place !
Some viruses attack cells by attaching to their outer covering entering and taking over their genetic machinery.viruses are able to invade cells after first attaching to their
Name the three parts of the brain and one function of that part
cerebrum: interprets touch, vision, hearing, speech, etc.
cerebellum: coordinate muscle movements, posture, and balance
brainstem: connects cerebrum and cerebellum. performs automatic functions, breathing, body temperature, sneezing, etc.
why is it so difficult to experience the northern lights here in michigan? I need to know noww
Answer:
Think about where you're located on the globe. That'll tell you your answer
Explanation:
which is more electronegative? F or N?
To form the universe, galaxies, solar systems, and planets you need…
I think this because....
Someone please help me
Answer: Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material
Explanation:
Answer:
Explanation:
Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material. this is because if some get to close it could burn the planet i think.
describe un modelo matemático para representar lo que sucede en cada una de las reacciones químicas (incluye toda la simbología que puedas) y clasifícalas según consideres de acuerdo con lo abordado en el tema.
1. El hidrógeno molecular reacciona con el oxígeno molecular y produce agua
2. El Óxido de calcio reacciona con el agua y produce hidróxido de calcio
3. El sulfuro de hierro (II) se produce cuando reacciona el azufre y el hierro en su forma atómica
4. El ácido sulfuroso se descompone por la acción de calor en dióxido de azufre gaseoso y agua
5. El carbonato de calcio se descompone por la acción de calor en oxido de calcio y dióxido de carbono gaseoso.
6. El magnesio reacciona con el ácido clorhídrico y produce dióxido de magnesio e hidrógeno gaseoso.
AYUDAAAAA
Responder:
2H2 + O2 → 2H2O
CaO + H2O → Ca (OH) 2
Fe + S → FeS
H2SO3 → SO2 + H2O
CaCO3 → CaO + CO2
Explicación:
2H2 + O2 → 2H2O
2 moléculas de hidrógeno gaseoso reaccionan con oxigente para producir 2 moléculas de agua
CaO + H2O → Ca (OH) 2
El óxido de calcio reacciona con el agua para producir hidróxido de calcio.
Fe + S → FeS
El hierro reacciona con el azufre para producir sulfuro de hierro.
H2SO3 → SO2 + H2O
Por descomposición, el ácido sulfuroso se descompone para producir dióxido de azufre y agua.
CaCO3 → CaO + CO2
El carbonato de calcio se descompone para producir óxido de calcio y dióxido de carbono.
Prove this reaction is a redox reaction
3 Mg + 2 FeCl3 +2 Fe + 3 MgCl2
Your answer should include the half equations
Answer:
because Redox means two words:reduction and oxidation
reduction is when oxygen is taken from a substance while oxidation is the addition of oxygen to a substance..Magnesium displaces chlorine from iron(fe)because it is more reactive than iron
and iron gives chlorine to magnesium because it's less reactive.This is due to their position on reactivity series.
Explanation:
This is called displacement reaction where by A most reactive metal remove a substance from a less reactive metal and form up a salt
and in this case the salt formed in the reaction is 3MgCl
heelp plzzzzzzzz anyyyyyone
Answer: C
Explanation:
2. (10 Points) If something has a high heat capacity will it take a little energy or a
lot of energy to change its temperature? Defend your answer.
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wtjfavyw
How many moles of NaCl can be made from 16 moles of Na?
particles in a gas can______.
I have peew weee brain help me pls
Typically, your percent yield is ______ than 100% because ___________________________.
Reasons why percent yield is more than 100
Typically, percent yields are understandably less than 100% because of the reasons indicated earlier. However, percent yields greater than 100% are possible if the measured product of the reaction contains impurities that cause its mass to be greater than it actually would be if the product was pure.
figure it out
Answer:
Explanation:
A
Use the following equations to determine the heat of the reaction of:
N2H4(l) + H2(g) --> 2NH3(g) ΔH=?
N2H4(l) + CH4O(l) → CH2O(g) + N2(g) + 3H2(g) ΔH = -37
kJ N2(g) + 3H2(g) → 2NH3(g) ΔH = -46
kJ CH4O(l) → CH2O(g) + H2(g) ΔH = -65 kJ
ebsite uses cookies to ensure you get the best experience on our website. Learn more
Got it!
Doing your Assignments
Doing your Assignments
Sign in
How it works
Examples
Reviews
Homework Answers
Blog
Contact us
Submit
95 982
Assignments Done
98.8%
Successfully Done
In February 2021
Physics help
Math help
Programming help
Answer to Question #96220 in Molecular Physics | Thermodynamics for Kaleesh
Answers>Physics>Molecular Physics | Thermodynamics
Question #96220
a) Determine the enthalpy changes, ΔH for the reaction below, given the following reactions and subsequent ΔH values. Please rewrite the amended chemical reaction equation again.
N2H4 (l) + CH4O (l) CH2O (g) + N2 (g) + 3H2 (g)
2NH3 (g) N2H4 (l) + H2 (g) ΔH = 22.5kJ
2NH3 (g) N2 (g) + 3H2 (g) ΔH = 57.5 kJ
CH2O (g) + H2 (g) CH4O (l) ΔH = 81.2 kJ
b) Given that the enthalpy of vaporization for water as below:
H2O (l) H2O (g) ΔH vap = 44.0 kJ mol-1
Calculate enthalpy ΔH for each of the following processes:
i) Evaporating 3.00 moles of water
ii) Evaporating 3.00 grams of water
i) Condensing 20.0 grams of water
(3 Marks)
c) Use the enthalpy of formation data to calculate the enthalpy of the reaction below.
2C2H6 (g) + 7O2 6H2O (g) + 4CO2 (g)