Answer:
35.0 atm + 5.0 atm + 25.0 atm = 65 atm
Explanation:
Partial pressure + Partial pressure + Partial pressure = Total pressure
The concept Dalton's law of partial pressures is used here to determine the total pressure of the gas. The total pressure of the gas is the sum of partial pressures of the gas. Here the total pressure is 65 atm.
What is Dalton's law of partial pressure?The pressure exerted by a mixture of two or more non-reacting gases enclosed in a definite volume is equal to the sum of the partial pressures of the component gases.
The partial pressure of a component gas in a mixture is the pressure that gas would exert if present alone in the vessel at the same temperature as that of the mixture.
Let p₁, p₂, p₃, etc. are the partial pressures. Then the total pressure is given as:
P = p₁ + p₂ + p₃
P = 35.0 + 5.0 + 25.0
P = 65 atm
Thus the total pressure is 65 atm.
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How do you calibrate an electronic analytical balance
Explanation:
For the calibration process, use a weight that is 50% of the scale's capacity for accurate calibration. Weights less than 10% can result in inaccuracy. Make sure that the scale doesn't have any weights placed on it and nothing is rubbing against the scale or the platform.
What volume of O2 is required to react with CS2 to produce 4 liters of CO2?
Answer:
12 L of O₂
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
CS₂ + 3O₂ —> CO₂ + 2SO₂
From the balanced equation above,
3 L of O₂ reacted to produce 1 L of CO₂.
Finally, we shall determine the volume of O₂ required to produce 4 L of CO₂. This can be obtained as follow:
From the balanced equation above,
3 L of O₂ reacted to produce 1 L of CO₂.
Therefore, xL of O₂ will react to produce 4 L of CO₂ i.e
xL of O₂ = 3 × 4
xL of O₂ = 12 L
Thus, 12 L of O₂ is needed for the reaction.
Which of the following masses represent 0.500 mol of the
indicated substance?
Answer: 103.6 g
Explanation:
On CK-12
2. According to decreasing ionization energy
Cr
со
Fe
V
Mn
Answer: V, Mn, Cr, Fe, Co
Explanation: all elements belong to 4th period. Ionization energy increases from
Left to right
Transparency is a ____
of matter.
property
substance
type
Answer: -property
Explanation: Transparency is a property of matter.
Answer: property i think
Explanation:
Calculate the specific heat of a substance given that 49 joules of heat is required to raise the temperature of 25.0 g of the substance from 92.6 ºC to 99.4 ºC.
Answer:
0.29 J/g.°C
Explanation:
Step 1: Given data
Added heat (Q): 49 JMass of the substance (m): 25.0 gInitial temperature: 92.6 °CFinal temperature: 99.4 °CStep 2: Calculate the temperature change (ΔT)
ΔT = 99.4 °C - 92.6 °C = 6.8 °C
Step 3: Calculate the specific heat of the substance (c)
We will use the following expression.
Q = c × m × ΔT
c = Q / m × ΔT
c = 49 J / 25.0 g × 6.8 °C = 0.29 J/g.°C
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You have an unknown concentration of 0.035 L of HCl acid and added 0.033 L of 0.3 M NaOH before the equivalence point was reached. What is the concentration of the HCl?
HCl + NaOH -> H2O + NaCl
A) 0.28 M HCl
B) 0.11 M HCl
C) 0.035 M HCl
D) 3.14 M HCl
Answer:
A
Explanation:
Answer:
C
Explanation:
Pretty sure!
The titration of HCl with NaOH is an example of:
A. a weak acid-weak base titration,
B. a weak acid-strong base titration.
c. a strong acid-strong base titration.
D. a strong acid-weak base titration.
Answer:
I’m pretty sure it’s C
Explanation:
AP Ex
How many mL of a 6 M NaOH stock solution is needed in order to prepare 500 mL of a 0.2 M NaOH solution?
Answer:
The right answer is "16.67 mL".
Explanation:
Given:
Molarity of NaOH,
[tex]M_1=6 \ M[/tex]
[tex]M_2=0.2 \ M[/tex]
Volume of NaOH,
[tex]V_1=V \ mL[/tex]
[tex]V_2=500 \ mL[/tex]
As we know, the equation,
⇒ [tex]M_1V_1=M_2V_2[/tex]
On putting the values, we get
⇒ [tex]6\times V=0.2\times 500[/tex]
⇒ [tex]6\times V=100[/tex]
⇒ [tex]V=\frac{100}{6}[/tex]
⇒ [tex]=16.67 \ mL[/tex]
A newborn blue whale measures 6.0 to 7.9 m long and weighs up to 3003 kg. The blue whale produces the loudest sound by any living animal, 188 dB and can be detected as far as 850 000 m away. What is the total number of significant figures in all these trivia?
1. What would happen to an inflated balloon it were to be placed in a cold environment?
The balloon would inflate more
The balloon would pop
The balloon would float away
The balloon would deflate
Answer:
The balloon would deflate
Explanation:
Chemistry Help (Naming Oxyacids Chart)
Answer:
HClO₃ /chloric acid /suffix -ic/ ClO₃⁻ (chlorate)
HClO₂/ chlorous acid/ suffix -ous/ ClO₂⁻ (chlorite)
HNO₃ /nitric acid /suffix -ic/ NO₃⁻ (nitrate)
HNO₂/ nitrous acid/ suffix -ous/ NO₂⁻ (nitrite)
Explanation:
Chlorine has 4 positive oxidation numbers to form oxyacids: +1, +3, +5 and +7.
When it uses the oxidation number +5, it forms HClO₃, which is named chloric acid, with the suffix -ic. When it loses an H⁺, it forms the oxyanion ClO₃⁻ (chlorate).When it uses the oxidation number +3, it forms HClO₂, which is named chlorous acid, with the suffix -ous. When it loses an H⁺, it forms the oxyanion ClO₂⁻ (chlorite).Nitrogen has 2 positive oxidation numbers to form oxyacids: +3 and +5.
When it uses the oxidation number +5, it forms HNO₃, which is named nitric acid, with the suffix -ic. When it loses an H⁺, it forms the oxyanion NO₃⁻ (nitrate).When it uses the oxidation number +3, it forms HNO₂, which is named nitrous acid, with the suffix -ous. When it loses an H⁺, it forms the oxyanion NO₂⁻ (nitrite).What is all the colors in a rainbow
Answer:
Red, orange, yellow, green, blue, indigo, violet.
Explanation:
Answer:
Red, orange, yellow, green, blue, purple, violet.
Explanation:
Which type of reaction is represented by this graph?
Potential energy
Reaction progress
A. Synthesis
B. Endothermic
C. Decomposition
D. Exothermic
Answer:
D. Exothermic .
Explanation:
Hello there!
In this case, since the potential energy versus reaction progress diagrams are related to the energetic profile of a chemical reaction, we can set the initial point at the beginning of the reaction as the energy of the reactants and the final point as the energy of the products.
Next, since the change in the enthalpy of a reaction is quantified by subtracting products minus reactants, we can see that the products have less energy than the reactants and therefore ΔH for this reaction is negative, which matches with the definition of D. Exothermic reaction.
Regards!
A binary covalent bond exists between
A.any element
B.2 nonmetals
C.1met and 1 nonmetal
D.2 metals
Answer:
B
Explanation:
Double Covalent bonds or as you say "binary" bonds consists of 2 non-metals only, nothing else.
Hope this helps!
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You add 1.5 moles of HF to 6 liters of water. The concentration is at equilibrium when [H+] is at 0.10 M. What is the Ka of HF? HF -> H+ + F-.
A) 0.067
B) 0.10
C) 0.25
D) 1.5
Answer:
C
Explanation:
NP
1. Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Provide a string of letters (e.g. abcd) as an answer with the highest priority listed first, lowest priority last:a) -CH3
b) -CH2OH
c) -CH2NH2
d) -CH2BR2. Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Provide a string of letters (e.g. abcd) as an answer with the highest priority listed first, lowest priority last:a) -F
b) -CH2OH
c) -CHO
d) -CH3
Answer:
1. CH₂Br > CH₂OH > CH₂NH₂ > CH₃
2. -F > -CHO > - CH₂OH > CH₃
Explanation:
The arrangement of the above atom is due to their atomicity and electronegativity of the given compounds.
From (1) we will realize that Bromine (Br) possesses the greatest priority because its atomic number is the highest. This is followed by oxygen (O) in CH₂OH since atomic no 8 is higher than that of Nitrogen N(7). Lastly, CH₃ has the only hydrogen attached to it with the atomic no of (1)
In the second part of the question>
The electronegativity of an element increases across the period and down the group. Fluorine is highly electronegative and contains the highest atomic number of oxygen in -CHO. The oxygen (O) in -CHO has a double bond which gives an edge over the (O) in CH₂OH. Lastly, CH₃ contains a substituted hydrogen atom
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Calculate the specific heat of a substance given that 512 joules of heat is required to raise the temperature of 255.0 g of the substance by 15.0 ºC.
Answer:
[tex]c=0.133\ J/g^{\circ}C[/tex]
Explanation:
Given that,
Heat required, Q = 512 J
Mass of the substance, m = 255 g
The change in temperature, [tex]\Delta T=15^{\circ} C[/tex]
Let c be the specific heat of the substance. We know that the heat required to raise the temperature is given by :
[tex]Q=mc\Delta T[/tex]
Where
c is the specific heat of a substance
So,
[tex]c=\dfrac{Q}{m\Delta T}\\\\=\dfrac{512}{255\times 15}\\\\c=0.133\ J/g^{\circ}C[/tex]
So, the specific heat of the substance is equal to [tex]0.133\ J/g^{\circ}C[/tex].
Write the structure of all possible peptides containing these amino acids: Asp, Glu, Gln Use single letter abbreviations and capital letters only; i.e. GYR, not Gly-Tyr-Arg. If there are fewer than 6 peptides, leave an appropriate number of answer boxes empty. fill in the blank 1 , fill in the blank 2 , fill in the blank 3 , fill in the blank 4 , fill in the blank 5 , fill in the blank 6
Answer:
QED, EDQ, DQE, EQD, DEQ, QDE
Explanation:
The structure of all possible peptides that contain the given amino acids are :
QED, EDQ, DQE, EQD, DEQ, QDE
where : Asp is represented by the letter code D
Glu is represented by the letter code E
Gln is represented by the letter code Q
Note : when three amino acids combine they form what is known as tripeptide ( i.e. contains two peptide linkages ) while a peptide linkage is been formed by the combination of a carboxyl group of an amino acid and the amino group of different amino acid
What is the hydrogen ion concentration of a solution with pH=7.75 ?
Answer:
[tex][H^+]=1.78x10^{-8}M[/tex]
Explanation:
Hello there!
In this case, according to the given information about the pH, it is firstly necessary for us to remember that the pH is defined as the potential of the hydrogen ions in the solution and the concentration of those ions represents how many of them are present in the solution; in such a way, it is possible for us use:
[tex]pH=-log([H^+])[/tex]
Whereas the concentration of hydrogen ions can be calculated as follows:
[tex][H^+]=10^{-pH}[/tex]
So we plug in the given pH to obtain:
[tex][H^+]=10^{-7.75}=1.78x10^{-8}M[/tex]
Regards!
How many L of 3.0M solution
can be made with 78g of
NaCl?
Answer:
Need to find moles NaCl.
526 grams NaCl (1 mole NaCl/58.44 grams)
= 9.0 moles NaCl
----------------------------------------------------
now,
Molarity = moles of solute/Liters of solution
or, for our purposes
Liters of solution = moles of solute/Molarity
Liters of solution = 9.0 moles NaCl/3.0 M
= 3.0 liters in volume
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Where are the majority of temperate grasslands located?
A interiors of continents
B along the coastline
C in desert regions
D between mountain ranges
Answer:
D. Between mountain ranges
Explanation:
Usually in between mountains is where the most grass is.
Answer:
in the interior of continents
Explanation:
If 5.00 g of Gas A and 5.00 g of Gas B are mixed in the same container, and the partial pressure of Gas B is determined to be twice that of Gas A, what do we know about the gases? A) Gas A has half the molar mass of Gas B. B) Gas A has twice the molar mass of Gas B. C) Gas A has a higher temperature than Gas B. D) Gas A takes up twice the volume in the vessel than Gas B.
Answer:
B) Gas A has twice the molar mass of Gas B.
Explanation:
Partial pressure of a gas is defined as the moles of the gas/ Total moles of the mixture times total pressure. The equation is:
Partial pressure A = Moles A / total moles * Total pressure
From the definition, we can say that the moles of the gas A are twice the moles of B:
2 Moles A = Moles B
As the mass of both gases is the same but the moles of B are twice the moles of A:
The molar mass of A is twice the molar mass of B
Right answer is:
B) Gas A has twice the molar mass of Gas B.We have that for the Question " what do we know about the gases?"
It can be said that
B) Gas A has twice the molar mass of Gas B [tex]M_A=2M_B[/tex]
From the question we are told
5.00 g of Gas A and 5.00 g of Gas B are mixed in the same container, and the partial pressure of Gas B is determined to be twice that of Gas A
The equation for partial pressure gasA and gasB is given as
[tex]Partial Pressure = \frac{number of moles of }{Total no of moles of gas}[/tex]
That results to,
[tex]\frac{Partial pressure of A}{Partial pressure of B} = \frac{no of moles of A}{no of moles of B}[/tex]
[tex]= \frac{Given mass A}{Molar mass A} * \frac{Molar mass B}{Given mass B}\\\\= \frac{1}{2} = \frac{5*M_B}{M_A*5}\\\\= \frac{1}{2} = \frac{M_B}{M_A}\\\\= M_A = 2M_B[/tex]
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how many moles of solute are needed to make 250 mL of a 0.50 M solution of sodium phosphate
Answer:
0.125 moles of solute
Explanation:
The formula for molarity (M) is moles of solute/liters of solution. First, convert 250 mL into liters:
250 mL/1 * 1 L/1000 mL = 0.25 L.
Then, plug in the values of m/L = M
m/0.25 = 0.5
Solve for moles (m). You would multiply 0.5 by 0.25.
m = 0.125
Lastly, if you'd like to check it and see if it's correct, do 0.125/0.25, and you should get 0.5 M.
Answer:
[tex]\boxed {\boxed {\sf 0.125 \ mol }}[/tex]
Explanation:
Molarity is a measure of concentration. It is the moles of solute per liters of solution.
[tex]molarity = \frac{ moles \ of \ solute}{ liters \ of \ solution}[/tex]
We know the solution has a molarity of 0.5 M or moles per liter. There are 250 milliliters of solution. First, we need to convert to liters. 1 liter is equal to 1000 milliliters.
[tex]\frac {1 \ L}{ 1000 \ mL}[/tex][tex]250 \ mL *\frac {1 \ L}{ 1000 \ mL}[/tex][tex]\frac {250 }{ 1000 } \ L = 0.25 \ L[/tex]Now we can substitute the values we know into the formula.
molarity= 0.5 mol/L liters of solution = 0.25 Lmoles of solute=x (unknown)[tex]0.5 \ mol/L= \frac{ x}{0.25 \ L}[/tex]
Since we are solving for the moles of solute, we need to isolate the variable x. It is being divided by 0.25 L. The inverse of division is multiplication. Multiply both sides by 0.25 L.
[tex]0.25 \ L *0.5 \ mol/L= \frac{ x}{0.25 \ L}*0.25 \ L[/tex]
[tex]0.25 \ L * 0.5 \ mol/L =x[/tex]
[tex]0.25 * 0.5 \ mol=x[/tex]
[tex]0.125 \ mol =x[/tex]
0.125 moles of sodium phosphate are needed to make 250 mL of a 0.50 M solution.
Se prepara una concentración molar 0.5M de hidróxido de sodio (NaCH) con la finalidad de determinar el grado de acidez de una bebida embotellada. Calcula la cantidad de gramos de hidróxido de sodio (NaCH) que se requiere para preparar 5 litros de dicha solución.
Answer:
100 g
Explanation:
Primero hay que calcular el número requerido de moles de NaOH, usando la definición de molaridad:
Molaridad = moles / litros0.5 M = moles / 5 Lmoles = 2.5 molesAhora hay que convertir 2.5 moles de NaOH en gramos, usando su masa molecular:
2.5 mol * 40 g/mol = 100 gSe requieren 100 gramos de NaOH.
What is the mass of 9.23*10^41 atoms of phosphorus (P)?
(Put your answer in scientific notation)
Answer:
[tex]m_P=4.75x10^{19}g\ P[/tex]
Explanation:
Hello there!
In this case, according to the given atoms of phosphorous, it is possible to calculate the mass of those atoms by bearing to mind the definition of mole in terms of the Avogadro's number; which refers to the mass and amount of particles in one mole of any element as equal to the atomic mass and the Avogadro's number respectively:
[tex]1 molP=6.022x10^{23}atoms\ P=30.97gP[/tex]
Which is used to obtain the required mass of P:
[tex]m_P=9.23x10^{41}atoms\ P*\frac{30.97g P}{6.022x10^{23}atoms\ P}\\\\m_P=4.75x10^{19}g\ P[/tex]
Regards!
1. Alexa and her family travelled 5 hours south east on 1-45 to crystal
beach this summer for vacation. If the trip was a total of 340 miles,
what was her average speed?
EQUATION
PLUG N NUMBERS
INTO THE EQUSTION
ENALANSWER WITH
UNTS
Answer:
Average speed = 68 mph
Explanation:
Given that,
Total distance traveled by the family, d = 340 miles
The family traveled 5 hours southeast.
We need to find her average speed. The speed of an object is given by the total distance covered divided by time taken. So,
[tex]v=\dfrac{d}{t}[/tex]
Put all the values,
[tex]v=\dfrac{340}{5}\\\\v=68\ mph[/tex]
So, her average speed is equal to 68 mph.
how much corn syrup should be added to water to make 200 mL of a 10% by volume solution
To make 200 mL of a 10% by volume solution, add 20 mL corn syrup to water.
What is volume solution?Volume percent of a solution is defined as the ratio of the volume of solute present in a solution to the volume of the solution as a whole. It means that the volume of a closed figure determines how much three-dimensional space it can occupy. In terms of numerical value, volume is the amount of three-dimensional space enclosed by a closed surface. For example, a substance's space can be solid, liquid, gas, or plasma, or any other space-occupying shape. The volume percentage of a solution can be calculated by dividing the volume of solute by the volume of solution and multiplying the result by 100. The basic formula for volume is length width height, whereas the basic formula for area of a rectangular shape is length width height. The calculation is unaffected by how you refer to the various dimensions: you can, for example, use 'depth' instead of 'height.'To learn more about volume solution, refer to:
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C. Identify a set of four possible quantum numbers for the circled electron in manganese
(Mn). (There is more than one correct answer.)
Answer:
n = 3
l = 0, 1, or 2
m_l = -2, -1, 0 , 1 or 2.
m_s = +½ or -½
Explanation:
The atomic number of manganese is 25 and as such it's electron configuration is;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
The circled electron is part of the 5 electrons in the 3d orbital.
In this place, the main energy level which is the principal quantum number is n = 3 while the azimuthal quantum number is l = 2.
Thus,l can either be 0, 1, or 2
Now; if l = 0, then it means ml = 0
if l = 2, then it means the magnetic quantum number m_l from - l to + l could be -2, -1, 0 , 1 or 2.
Also, we know that the spin quantum number m_s could be +½ or -½
A solid sample is hit with a hammer and breaks into jagged, irregular shards. What type of solid was it? A) molecular solid b) network solid c) ionic solid d)metallic solid
I honestly don't know the answer