Answer:
[tex]Kp=9.2x10^{-3}[/tex]
Explanation:
Hello!
In this case, for the undergoing chemical reaction at equilibrium:
[tex]2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)[/tex]
Which means that pressure-based equilibrium constant is computed via the following equilibrium expression:
[tex]Kp=\frac{p_{SO_3}^2}{p_{SO_2}^2p_{O_2}}[/tex]
Thus, by plugging in the given pressures at equilibrium, the required Kp turns out:
[tex]Kp=\frac{55.0^2}{70.2^2*66.7}\\\\Kp=9.2x10^{-3}[/tex]
Best regards!
When color changes from yellow to brown, what has happened?
Answer:
its a diffrent color :)
Explanation:
Why do you think it rains more in west Ferris than in east Ferris
Answer:
This idea helps students explain why more rain forms over West Ferris than East Ferris. ... Therefore, when students explain that water vapor condenses higher in the atmosphere, they are actually explaining that water vapor condenses high in the troposphere, which is relatively low in the atmosphere.
Explanation:
butyric acid has a putrid odor like rancid butter. If you got some of this material on your hands, how could you remove the odor
Answer:
The correct answer would be - the easiest way is to wash with some polar solvent or salt solution or soap and water
Explanation:
Butyric acid is a carboxylic acid that has a putrid odor like rancid butter. If an individual touch this chemical will have the same odor on his hand and to get rid of it one should wash his hand with a polar solvent such as methanol, or salt solutions such as like NaHCO3, or soap and water that will form sodium butyrate that has no smell and easily dissolve and remove.
Thus, the easiest way is to wash with some polar solvent or salt solution or soap and water
7. Sometimes, especially in the clinical lab, concentrations will be expressed in percentage rather than molarity. The percentage concentration refers to the number of grams of solute dissolved in 100 ml of solution (eg. a 5 % solution of sucrose contains 5 g of sucrose in 100 ml of water). Normal saline, a solution that is isotonic with human blood, is a 0.85 percent solution of sodium chloride. What is the molar concentration of normal saline
Answer:
The molar concentration of normal saline is 0.15 mol/L.
Explanation:
The mass of NaCl in 0.85% of normal saline is:
[tex] 0.85 \% = \frac{0.85 g}{100 ml} [/tex]
[tex] m_{NaCl} = 0.85 g [/tex]
The molar concentration can be found using the following equation:
[tex] C = \frac{n}{V} [/tex]
So we need to find the number of moles of NaCl in 1 liter of solution.
[tex]m_{NaCl} = \frac{0.85 g}{100 mL}*\frac{1000 mL}{1 L}*1 L = 8.5 g[/tex]
[tex]n = \frac{m_{NaCl}}{M}[/tex]
Where:
M: is the molar mass of NaCl = 58.44 g/mol
[tex] n = \frac{8.5 g}{58.44 g/mol} = 0.15 moles [/tex]
Hence, the molar concentration is:
[tex]C = \frac{0.15 moles}{1 L} = 0.15 mol/L[/tex]
Therefore, the molar concentration of normal saline is 0.15 mole per liter.
I hope it helps you!
Photosynthesis is? (Single choice)
A. chemical reaction that occurs in the mitochondria of a cell in all living organisms.
B. a chemical reactions that occurs in the chloroplast of a plant.
C. a chemical reaction that uses food molecules and converts it into ATP.
D. a chemical reaction that occurs mainly in protists.
Answer:
B. a chemical reactions that occurs in the chloroplast of a plant.
Explanation:
Answer:
B.
Explanation:
it is b because I took science
lol have a good day
please help this is due today which ones are reactive and which arent?
Answer:
I' really don't know I'm sorry
Islands have cool and calm weather throughout the year? Why?
If a steel container holds 3.50 moles of hydrogen gas and 3.50 moles of helium gas, and the total pressure is 4.00 atm., what is the partial pressure of each of the gases
Answer:
1. Partial pressure of H₂ = 2 atm
2. Partial pressure of He = 2 atm
Explanation:
The following data were obtained from the question:
Mole of H₂ = 3.50 moles
Mole of He = 3.50 moles
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ =?
Partial pressure of He =?
Next, we shall determine the mole fraction of each gas this can be obtained as follow:
Mole of H₂ = 3.50 moles
Mole of He = 3.50 moles
Total mole = Mole of H₂ + Mole of He
Total mole = 3.50 + 3.50
Total mole = 7 moles
Mole fraction of H₂ = mole of H₂ / Total mole
Mole fraction of H₂ = 3.5/7
Mole fraction of H₂ = 0.5
Mole fraction of He = mole of He / Total mole
Mole fraction of He = 3.5/7
Mole fraction of He = 0.5
1. Determination of the partial pressure of H₂.
Mole fraction of H₂ = 0.5
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ =?
Partial pressure of H₂ = Mole fraction of H₂ × Pₜ
Partial pressure of H₂ = 0.5 × 4
Partial pressure of H₂ = 2 atm
2. Determination of the partial pressure of He.
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ = 2 atm
Partial pressure of He =?
Total pressure (Pₜ) = Partial pressure of H₂ + Partial pressure of He
4 = 2 + Partial pressure of He
Collect like terms
Partial pressure of He = 4 – 2
Partial pressure of He = 2 atm
For the reaction between aqueous solutions of acetic acid (CH3COOH) and barium hydroxide, Ba(OH)2, write
Answer:
See explanation.
Explanation:
Hello!
In this case, since we are asked to note down the complete molecular equation, complete ionic equation and the net ionic equation for the reaction between acetic acid (weak acid) and barium hydroxide (strong base), we proceed as shown below:
- Complete molecular equation:
[tex]2CH_3COOH(aq)+Ba(OH)_2(aq)\rightarrow Ba(CH_3COO)_2(aq)+2H_2O(l)[/tex]
- Complete ionic equation: in this case, since acetic acid is a weak one, it is not ionized, so we do this:
[tex]2CH_3COOH(aq)+Ba^{2+}(aq)+2OH^-(aq)\rightarrow Ba^{2+}(aq)+2CH_3COO^-(aq)+2H_2O(l)[/tex]
- Net ionic equation: in this case, we cancel out the barium ions as they are the spectators one because they are present at both reactants and products:
[tex]2CH_3COOH(aq)+2OH^-(aq)\rightarrow 2CH_3COO^-(aq)+2H_2O(l)\\\\CH_3COOH(aq)+OH^-(aq)\rightarrow CH_3COO^-(aq)+H_2O(l)[/tex]
Best regards!
what energy transfer and transformation occurs when riding a bicycle?
Answer: You pedaling the bike is transforming chemical energy
Explanation:
which of the following is a strong acid?
A, HCI (hydrochloric acid)
B, HF (hydrofluoric acid)
C, NaOH (sodium hydroxide)
D, NH3 (ammonia)
Answer:
A) HCI( hydrochloric acid)
Explanation:
HCI is a strong acid because it has more number of hydrogen ions whereas acetic acid contains less number of hydrogen ions so its a weak acid
a ______ is a single kind of matter that has a specific composition.
Answer:
SUBSTANCE
Explanation:
hope that help you thanx
If a dog has a mass of 21.3 kg, what is its mass in the following units? Use scientific notation in all of
your answers.
(a) What is the dog's mass in grams?
eBook
x 10
g
Ask
(b) What is the dog's mass in milligrams?
Print
x 10
mg
References
(C) What is the dog's mass in micrograms?
x 10
ug
Draw the Lewis structures for three resonance forms of the nitrate ion, NO−3 . Include electron lone pairs, and any formal charges.
Answer:
See explanation
Explanation:
The nitrate ion is a polyatomic ion. It means that the nitrate ion contains more than one atom. These atoms are one nitrogen atom and three oxygen atoms.
However, we can not fully describe the bonding in the nitrate ion using one structure. I have shown three resonance structures that describe the bonding in the nitrate ion in the image attached to this answer.
Gaseous butane CH3CH22CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. What is the theoretical yield of carbon dioxide formed from the reaction of 3.49g of butane and 17.1g of oxygen gas
Answer:
10.56 g
Explanation:
C4H10(g) + 13/2O2 (g) -------> 4CO2(g) + 5H2O(l)
Number of moles of butane = 3.49g/ 58 g/mol = 0.06 moles
1 mole butane yields 4 moles of CO2
0.06 moles of butane = 0.06 × 4/1 = 0.24 moles of CO2
Number of moles of oxygen = 17.1g/32g/mol = 0.53 moles of oxygen
6.5 moles of oxygen yields 4 moles of CO2
0.53 moles of oxygen yields 0.53 × 4/6.5 =0.33 moles of CO2
Butane is the limiting reactant
Theoretical yield of CO2 = 0.24 moles × 44g/mol = 10.56 g
1. Which of the following elements has the smallest ionization energy
a. arsenic
b. nitrogen
c. bismuth
d. chlorine.
Answer:
chlorine
Explanation:
hope this helps
Which ball has the greatest potential energy?
Ball A
Ball B
Ball
All of the balls have the same amount of potential energy
can you make energy with ionized particles? yes or no and how
3.25 x 10^24 molecules of dinitrogen pentoxide would be how many moles?
5.40 mol N₂O₅
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Using Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:Step 1: Define
3.25 × 10²⁴ molecules N₂O₅
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 3.25 \cdot 10^{24} \ molecules \ N_2O_5(\frac{1 \ mol \ N_2O_5}{6.022 \cdot 10^{23} \ molecules \ N_2O_5})[/tex]Multiply: [tex]5.39688 \ mol \ N_2O_5[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
5.39688 mol N₂O₅ ≈ 5.40 mol N₂O₅
To what temperature must an ideal gas at 27 o C be cooled to reduce its volume by 1/3
Answer:
28 oc
Explanation:
The diagram shows four different locations in an atom.
2
Nucleus
3
7
4
Which locations are likely to have subatomic particles with the LEAST mass? (3 points)
a
1 and 2
b
2 and 3
с
1 and 4
Od
3 and 4
The locations with subatomic particles with the least mass are locations 1 and 4.
An atom is usually divided into two main regions:
The nucleus: This is shown in the diagram with the numbers 2 and 3, and contains protons and neutrons.The outer region: This region includes everything outside the nucleus, and in this region, it is expected to find electrons.The three sub-particles previously mentioned (neutrons, protons, and electrons) differ not only in their location but also in their mass. Indeed, electrons have a lower mass if compared to neutrons and protons.
Based on this, the outer region (locations 1 and 4) has sub particles with the least mass.
Learn more about atom in: https://brainly.com/question/13981855
Answer:
1 and 4
Explanation:
took the test
Just saying thank you person above you are very great and smart. You deserve a hugeeeeeeee thank you. So, thank you!!!!!!!!!
What is the function/job of the digestive system?
Question 2 options:
to take in oxygen and remove carbon dioxide
to transport nutrients and waste throughout the body
to get energy and materials from food
to remove waste from the body
Answer:
The answer is B (to transport nutrients and waste throughout the body)
Explanation:
Took the test
The IR spectrum of a sample contains absorptions at 3050, 2950, and 1620 cm-1. To what class of organic compound does this sample most likely belong
Answer:
Alkene
Explanation:
The IR spectrum of an organic compound shows us the functional groups present in the compound.
By looking at the various stretching frequencies given in wave numbers, we can decide what functional groups are in the compound and hence the class of organic compounds to which it belongs.
The stretch 3080 cm-1 shows a mono-substituted alkene
The stretch 2950 cm-1 shows a C-H bond
The stretch 1620 cm-1 shows an alkenyl stretch.
Hence the compound is an alkene.
1. Which compound is composed of the most atoms?
A. H2SO4 B. Li2N C. Mg(OH)2 D. NaF
H₂SO₄ is composed of the most atoms
Further explanationGiven
Compounds of A. H2SO4 B. Li2N C. Mg(OH)2 D. NaF
Required
The most atoms
Solution
Compounds are composed of atoms of the same or different types
The number of atoms can be indicated from the subscript of each of the constituent atoms of the compound
A. H₂SO₄ : 2 atoms H, 1 atom S, 4 atoms O = 7 atoms
B. Li₂N : 2 atoms L, 1 atoms N = 3 atoms
C. Mg(OH)₂ : 1 atom Mg, 2 atoms O, 2 atoms H = 5 atoms
D. NaF : 1 atom Na, 1 atom F = 2 atoms
A 25.0 mL sample of 0.25 M potassium carbonate (K2CO3) solution is added to 30.0 mL of a 0.40 M barium nitrate (Ba(NO3)2) solution. What is the concentration of the excess metal ion after the precipitation reaction is complete
Answer:
0.10M of Ba²⁺ is the concentration of the metal in excess
Explanation:
Based on the chemical reaction:
K₂CO₃(aq) + Ba(NO₃)₂(aq) → BaCO₃(s) + 2KNO₃(aq)
1 mole of potassium carbonate reacts per mole of barium nitrate
To solve this question we need to find the moles of each salt to find then the moles of Barium in excess:
Moles K₂CO₃:
0.025L * (0.25mol / L) = 0.00625moles K₂CO₃ = moles CO₃²⁻
Moles Ba(NO₃)₂:
0.030L * (0.40mol/L) = 0.012 moles of Ba(NO₃)₂ = 0.012 moles of Ba²⁺
That means moles of Ba²⁺ that don't react are:
0.012 mol - 0.00625mol = 0.00575 moles Ba²⁺
In 25 + 30mL = 55mL:
0.00575 moles Ba²⁺ / 0.055L =
0.10M of Ba²⁺ is the concentration of the metal in excessThe concentration of the excess metal ion after the precipitation reaction is complete is 0.1045 M
From the question,
We are to determine the concentration of the excess metal ion after the precipitation reaction is complete
First, we will write the balanced chemical equation for the reaction
The balanced chemical equation for the reaction is
K₂CO₃ + Ba(NO₃)₂ → BaCO₃ + 2KNO₃
This means
1 mole of K₂CO₃ is required to react completely with 1 mole of Ba(NO₃)₂
Now, we will determine the number of moles of each reactant present.
For K₂CO₃Volume = 25.0 mL = 0.025 L
Concentration = 0.25 M
Using the formula
Number of moles = Concentration × Volume
∴ Number of moles of K₂CO₃ present = 0.25 × 0.025
Number of moles of K₂CO₃ present = 0.00625 mole
For Ba(NO₃)₂Volume = 30.0 mL = 0.03 L
Concentration = 0.40 M
∴ Number of moles of Ba(NO₃)₂ present = 0.40 × 0.03
Number of moles of Ba(NO₃)₂ present = 0.012 mole
Since
1 mole of K₂CO₃ is required to react completely with 1 mole of Ba(NO₃)₂
Then,
The 0.00625 mole of K₂CO₃ will react with 0.00625 mole of Ba(NO₃)₂
∴ Only 0.00625 mole of the Ba(NO₃)₂ will react
This means Ba(NO₃)₂ is the excess reactant.
Now, we will determine the number of moles of Ba(NO₃)₂ remaining
Number of moles of Ba(NO₃)₂ remaining = 0.012 mole - 0.00625 mole
Number of moles of Ba(NO₃)₂ remaining = 0.00575 mole
Now, for the concentration
Using the formula
[tex]Concentration = \frac{Number\ of\ moles}{Volume}[/tex]
Volume = Total volume of the solution = 0.025L + 0.03L
Volume = 0.055 L
∴ Concentration of the excess metal ion = [tex]\frac{0.00575}{0.055}[/tex]
Concentration of the excess metal ion = 0.1045 M
Hence, the concentration of the excess metal ion after the precipitation reaction is complete is 0.1045 M
Learn more here: https://brainly.com/question/1825674
There are some cells that do not have DNA.
O True
O false
Answer:
false
Explanation:
What would the mass be, in grams, of 0.89 moles of Cl2?
Answer:
Mass = 63.19 g
Explanation:
Given data:
Number of moles = 0.89 mol
Mass of Cl₂ = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of Cl₂ = 71 g/mol
by putting values,
0.89 mol = mass/ 71 g/mol
Mass = 0.89 mol × 71 g/mol
Mass = 63.19 g
What are the amount of moles in 12.15 grams of Magnesium?
I need to fix the equations
Answer:
try looking the equations or find a calulator for those type of eqautions
Explanation:
A chemist adds of a calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sulfate the chemist has added to the flask. Round your answer to significant digits.
The given question is incomplete. The complete question is:
A chemist adds 0.85 L of a 0.0050M calcium sulfate to a reaction flask. Calculate the mass in grams of calcium sulfate the chemist has added to the flask. Round your answer to significant digits.
Answer: The mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n}{V_s}[/tex]
where,
n = moles of solute
[tex]V_s[/tex] = volume of solution in L
moles of [tex]CaSO_4[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{136g/mol}[/tex]
Now put all the given values in the formula of molarity, we get
[tex]0.0050=\frac{x}{136\times 0.85}[/tex]
[tex]x=0.58 g[/tex]
Therefore, the mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g