Answer: The partial pressure of nitrogen gas if the total pressure is 111.7 atm is 88.243 atm.
Explanation:
Given: Mole fraction of oxygen = 0.21
Total pressure = 111.7 atm
It is known that the sum of moles fractions is always equal to 1. So, mole fraction of nitrogen is calculated as follows.
Mole fraction of nitrogen + mole fraction of oxygen = 1
Mole fraction of nitrogen = 1 - mole fraction of oxygen
Mole fraction of nitrogen = 1 - 0.21
Mole fraction of nitrogen = 0.79
Now, formula used to calculate the partial pressure of nitrogen is as follows.
[tex]P_{N} = X_{N} \times P_{total}[/tex]
where,
[tex]P_{N}[/tex] = partial pressure of nitrogen
[tex]X_{N}[/tex] = mole fraction of nitrogen
[tex]P_{total}[/tex] = total pressure
Substitute the values into above formula as follows.
[tex]P_{N} = X_{N} \times P_{total}\\= 0.79 \times 111.7 atm\\= 88.243 atm[/tex]
Thus, we can conclude that the partial pressure of nitrogen gas if the total pressure is 111.7 atm is 88.243 atm.
What is the pH of a solution with a concentration of 7.6 × 10–7 M H3O+?
0.993
6.12
7.88
8.34
Answer:
Ph = 6.12....
here ya go
Explanation:
-
The pH of the solution with a concentration of 7.6 × [tex]10^{-7}M[/tex] [tex]H_{3}O^{+}[/tex]will be 6.12.
What is pH?The pH of water indicates how acidic or basic it is. The scale runs from 0 to 14, with 7 representing neutrality. Acidity is indicated by a pH less than 7, while a pH greater than 7 denotes a base. The relative number of free hydrogen, as well as hydroxyl ions in water, and hydroxyl ions in water is measured by pH .
It is known that ,[[tex]H_{3}O^{+}[/tex]]=[tex][H^{+} ][/tex]
pH can be calculated by the formula:
[tex]pH = -logH^{+}.[/tex]
Now, put the value of hydrogen ion in above equation
pH = -log[7.6×10^{-7}M]
= -log(7.6)-log(10^{-7}
= -0.88+7log 10
= -0.88 +7
= 6.12.
Therefore, the pH of the solution will be 6.12.
To know more about pH click here.
https://brainly.com/question/491373.
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Sea turtles use the earths geomagnetic field to navigate their way home. What is the reason earth has a geomagnetic filed?
Answer:
::Due to the iron inside the earth.
Explanation:
Imagine a sphere of Iron, as big as two-third the size of the moon and as hot as 5700 Kelvin. That is the Earth’s core.
The iron core isn't in its liquid form even at that temperature because it is crushed under immense gravity. This core is surrounded by 2000 km of other metals like iron and nickel which are in their molten state.
The temperature is not the same at every point in this molten layer. The hotter and less dense matter rises up, and the warm denser matter sinks. This causes convectional currents in the interior of the Earth.
Because of the Earth’s spin, there is a force that established called the Coriolis force which causes swirling whirlpools here too.
This flow of molten metals produces electric currents which generate self-sustaining magnetic fields. And as a result of the Coriolis force, all these combined effects add up to produce one big magnetic field engulfing the Earth aligned in one direction.
g Which of the following is TRUE for a system that is in dynamic equilibrium? Which of the following is TRUE for a system that is in dynamic equilibrium? The concentration of products is equal to the concentration of the reactants. The forward reaction goes to 100% completion. Both the forward and reverse reactions come to a halt. The reaction rate of the forward reaction approaches zero. none of the above
Answer:
none of the above
Explanation:
A system is said to have attained dynamic equilibrium when the forward and reverse reactions proceed at the same rate. That is;
Rate of forward reaction = Rate of reverse reaction
The implication of this is that the concentrations of reactants and products remain constant when dynamic equilibrium is attained in a system. This does not mean that the reactant and product concentrations become equal; it rather means that their concentrations do not significantly change once dynamic equilibrium has been attained.
solve using the distributive property
- 592×7 + 592 × 3
Answer:
= -592 (7+3)
= 592 ×10
= -5920
hope it helps u
Mark me brainless
Use the nutrition label to answer the following questions.
16.How much energy is contained in
the six-cookie serving size
recommended on the label?
17.How much energy in joules is provided by eating
six cookies? (1 cal = 4.184 J; ALSO: 1 Calorie = 1
kilocalorie)
Answer:
six cookies?(1 cal _4.184 j; ALSO: 1 Calorie -1 kilocalorie)
PLEASEEE PLEASEE HELP THIS IS MY FINAL EXAM AND I HAVE 30 MINS REMAINING
You have 5 moles of O2. How many moles of CO2, are produced?
Answer:
1
Explanation:
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cómo se puede comprobar el efecto universo
Answer:
???! huhhhjhhh no I speak English
Explanation:
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Answer:
vifucivud UKvi uiiijhhh
Determine the number of moles in 1.5 x 10^25
atoms of iron.
Ants live in the hollow thorns of an acacia tree. The tree provides food and shelter for the ants. The ants protect the tree from herbivores that might otherwise eat the tree.
Which type of relationship does this represent?
A. mutualism
B. parasitism
C. commensalism
D. predator/prey
Calculate the ionization constant for the following acids or bases from the ionization constant of its conjugate base or conjugate acid: Keep your answer to 2 significant figures (CH3)3NH+
Answer:
7.41 × 10⁻⁵
Explanation:
Let's consider the basic dissociation reaction of trimethylamine (CH₃)N).
(CH₃)N + H₂O = (CH₃)NH⁺ + OH⁻
According to Brönsted-Lowry, in this reaction (CH₃)N is a base and (CH₃)NH⁺ is its conjugate acid. The pKb for (CH₃)N is 9.87. We can calculate the pKa of (CH₃)NH⁺ using the following expression.
pKa + pKb = 14
pKa = 14 - pKb = 14 - 9.87 = 4.13
Then, we can calculate the acid dissociation constant for (CH₃)NH⁺ using the following expression.
pKa = -log Ka
Ka = antilog - pKa = antilog -4.13 = 7.41 × 10⁻⁵
is chemistry hard in grade 11
explain to me everything plsss thanks
Explanation:
Chemistry is overall a very interesting subject and it really depends on what you personally consider enjoyable. I love chemistry and I think that grade 11 chemistry is very easy. It's mostly based on balancing chemical equation, molar mass calculations and more. But it's a great course to take based on my experience.
can someone please do the balanced equation for potassium fluoride?
Answer:
K + F2 = KF
Explanation:
Thats the balancee equation for potassium fluoride. The equation is 2K + F2 → 2KF and the balanced equation is K + F2 = KF
1:How many moles of ammonia will be produced if 12 moles of nitrogen are used?
2:How many moles of nitrogen are required to react with 6 moles of hydrogen?
3:Honors: If there are 40 moles of nitrogen and 30 moles of hydrogen, what is the limiting reactant? Explain your answer.
4:Honors: What is the mass of hydrogen required to produce 80 g of ammonia?
Please, I really need help, so I can graduate
Answer:
See Explanation
Explanation:
The reaction equation is
3H2(g) + N2(g) -----> 2NH3(g)
1)If 1 mole of N2 yields 2 moles of NH3
12 moles of N2 will yield 12 * 2/1 = 24 moles of NH3
2) 3 moles of nitrogen reacts with 1 mole of nitrogen
6 moles of hydrogen will react with 6 * 1/3 = 2 moles of nitrogen
3) The limiting reactant yields the least amount of product
If 1 mole of nitrogen yields 2 moles of NH3
40 moles of nitrogen yields 40 * 2/1 = 80 moles of NH3
If 3 moles of hydrogen yields 2 moles of NH3
30 moles of hydrogen yields 30 * 2/3 = 20 moles of NH3
Hence hydrogen is the limiting reactant
4) Number of moles in 80g of NH3 = 80g/17g/mol = 4.71 moles
3 moles of hydrogen produces 2 moles of ammonia
x moles of hydrogen produces 4.71 moles of ammonia
x = 3 * 4.71/2 = 7.065 moles of hydrogen
Mass = 7.065 moles of hydrogen * 2 g/mol
Mass = 14.13 g of hydrogen
Bananas Foster is an example of a dessert that is flambéed. A Bananas Foster label states the accepted number of Calories to be only 300 calories, but a calorimetry experiment measured there to be 318 calories. Calculate the percent error.
Answer:
6.00%
Explanation:
Step 1: Given data
Accepted value for the number of calories in a Bananas Foster: 300 calories
Measured value for the number of calories in a Bananas Foster: 318 calories
Step 2: Calculate the percent error in the measure
We will use the following expression.
%error = |accepted value - experimental value|/ accepted value × 100%
%error = |300 cal - 318 cal|/ 300 cal × 100% = 6.00%
pls help i need help help
Answer:
and is capillaries
Explanation:
hope it helps
convert 113 Fahrenheit to celcius do full process
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
45° Celsius
Formula (113°F − 32) × 5/9 = 45°C
ThanksHope it helpswrite a story of your life when you were hurted by someone whom you trusted blindly...
Answer:
Sis I think it happened with me but I am not able to remember if u want u can share if it happened with u
Determine la temperatura Kelvin de 2.49 moles de gas contenido en un
recipiente de 1.0 L a una presión de 143 kPa. *
Consider this reaction at equilibrium:
2BrNO (g) → 2NO (g)+ Br2 (g)
Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance.
a. NO is added to the reaction mixture
b. BrNO is added to the reaction mixture
c. Br2 is removed from the reaction mixture
d. Pressure is increased
Answer:
a. NO is added to the reaction mixture ⇒ to the left
b. BrNO is added to the reaction mixture ⇒ to the right
c. Br₂ is removed from the reaction mixture ⇒ to the right
d. Pressure is increased ⇒ to the left
Explanation:
The reaction at equilibrium is the following:
2BrNO (g) → 2NO (g)+ Br₂ (g)
The left side is the reactants side (2 BrNO) and the right side is the products side (2 NO + Br₂).
a. NO is added to the reaction mixture
NO is a product, in the right side of the equation. If a product is added, the equilibrium will shift to the opposite side, to the left, to form more reactants and compensate for the addition.
b. BrNO is added to the reaction mixture
BrNO is a reactant, in the left side of the equation. If a reactant is added to a reaction at equilibrium, more product will be formed in compensation. Therefore, the equilibrium will shift to the right.
c. Br₂ is removed from the reaction mixture
Br₂ is a product, in the right side. If it is removed, the system will compensate for the remotion by forming more product, so the reaction will shift to the right.
d. Pressure is increased
Since both reactants and products are in the gas phase, the equilibrium is affected by pressure. If pressure is increased, the equilibrium will shift to the side of the reaction with the fewest number of moles. The reactants side (left) has 2 moles of BrNO while the products side (right) has 3 moles (1 mol NO + 1 mol Br₂ = 3 moles of gas). Therefore, the reactants side has the fewest number of moles, so the equilibrium will shift to the left.
2. Acceleration is______
proportional to mass,
Answer:
Inversely
Explanation:
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
I have a chemistry question: What would be the % composition of sugar in a drink mix solution if 35.0 g of the mix was dissolved in 70.0 g of water. (Assuming that the drink mix is all sugar)
Answer:
50%
Explanation:
35.0g/70.0g×100%
=50%
explain the process of finishing
Answer:
[Your answer would be in this document of mine below] Thanks :D
Explanation:
The goal of this lesson is to answer the lesson
question, "What does half-life 'look like' for a
radioactive substance?" Fill in the blanks to
complete the hypothesis.
Hypothesis: If an element is radioactive, then the
fraction of radioactive atoms v remaining after
n half-life cycles should be approximately n
because...
Answer:
The half life for radioactive can be calculated as:
N /N0 = (1 /2) ^ n
n = T /T half
According to question there are n number of half life are present which would result in remaining amount of element as n.
Explanation:
Sorry if wrong
Answer:
1. atom
2. 0.5n
Explanation:
Because half of the atom's nuclei will decay during each cycle.
Lab 6: Basic Chemistry Thermodynamics: Solve the challenge of storing renewable energy
Answer:
Expensive and low storing capacity.
Explanation:
The storing of renewable energy is a big challenge for us because this renewable energy can't be stored for a long due to expensive and low storing capacity. There are two challenges about the storing of renewable energy is that the battery are very expensive and can store very less amount of energy which makes unable to store the renewable energy. The scientists should make a storing device which is not too much expensive and has more storage capacity.
Suppose Gabor, a scuba diver, is at a depth of 15m15m. Assume that: The air pressure in his air tract is the same as the net water pressure at this depth. This prevents water from coming in through his nose. The temperature of the air is constant (body temperature). The air acts as an ideal gas. Salt water has an average density of around 1.03 g/cm3g/cm3, which translates to an increase in pressure of 1.00 atmatm for every 10.0 mm of depth below the surface. Therefore, for example, at 10.0 mm, the net pressure is 2.00 atmatm. What is the ratio of the molar concentration of gases in Gabor's lungs at the depth of 15 meters to that at the surface
Answer:
The ration of molar concentration is "2.5".
Explanation:
The given values are:
Average density of salt water,
= [tex]1.03 \ g/cm^3[/tex]
Net pressure,
= [tex]2.00 \ atm[/tex]
Increase in pressure,
= [tex]1.00 \ atm[/tex]
Now,
The under water pressure will be:
= [tex]\frac{15 \ m}{10}\times 1 \ atm +1 \ atm[/tex]
= [tex]1.5\times 1+1[/tex]
= [tex]1.5+1[/tex]
= [tex]2.5 \ atm[/tex]
hence,
The ratio will be:
= [tex]\frac{(\frac{n}{V})_{15m} }{(\frac{n}{V})_{surface} }[/tex]
or,
= [tex]\frac{P}{P_s}[/tex]
= [tex]\frac{2.5}{1}[/tex]
= [tex]2.5[/tex]
How does artificial selection change a population over time?
Which subatomic particles are transferred in a redox reaction?
Answer: Electrons
Explanation:
what are the compounds that cause acid rain?
Answer:
Explanation:
Its a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances rise high into the atmosphere in which they mix and react with water, oxygen, and other chemicals to form more acidic pollutants.
Answer:
Explanation:
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
2) Choose the best answer. Which type of reaction is this? NaOH + H2O → Na+ + OH strong base dissociation strong acid dissociation weak base dissociation neutralization weak acide dissociation
Answer:
strong Base Dissociation
Explanation:
NaOH is baseNaOH is strong base that means strong acids ionizes almost completely when dissolved in water.how long did it take for the moon to go around earth
Answer: about one month
Explanation: