104895.10 kilometers need to drive for the lower fuel consumption of the second car to compensate for the higher cost of this car.
For calculating the number of miles we need the compare the cost equation of both cars.
Considering x be the number of kilometers, since the mileage of the USA-made car is (22.5 * 1.609) / 3.785 = 19.56-kilo meter per litre, and the cost of petrol per Litres = 2.05 .
SO for the USA made the pertrol cost is 2.05 / 9.56 = $0.214per km
and for the european made car is 2.05 / 28.5 = $0.071 per km
since the total cost is nothing like the sum of the purchase price and the fuel cost SO,
for the USA made , the total cost is = 85,000 + 0.214x and
for the eurpoean car is = 100,000 + 0.071x
By comparing the equation by considering the total cost for a car to be equal so
85,000 + 0.214x =100,000 + 0.071x
=>100,000- 85,000 = 0.214x- 0.071x
=>15000= 0.143x
=>x= 104895.10
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(a) What mass of lead(II) sulfate would be produced by the action of excess dilute sulfuric acid on 20 g of lead nitrate dissolved in water?
Mass of lead sulphate is 18.195g
Lead sulphate is the odorless and white crystalline powder and it is used to storage batteries as paint pigment and laboratory reagents
Given reaction is
Pb(NO₃)₂ + H₂SO₄ → PbSO₄ + 2HNO₃
Here given data is
20 g of lead nitrate dissolved in water
And number of moles = mass/molar mass, molar mass = 331.2 g/mol
Number of moles of Pb(NO₃)₂ = 20g/331.2 g/mol
Number of moles of Pb(NO₃)₂ = 0.060g/mol
Therefore, 1 mole of Pb(NO₃)₂ will produce 1 mole of PbSO₄
0.060 mole of Pb(NO₃)₂ = 0.060 mol PbSO₄
Therefore, now we can calculate the mass :
And number of moles = mass/molar mass
Number of moles of PbSO₄ = 0.060×303.26
Number of moles of PbSO₄ = 18.195g
Mass of lead(II) sulfate would be produced by the action of excess dilute sulfuric acid on 20 g of lead nitrate dissolved in water is 18.195g
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Consider the balanced reaction of magnesium and oxygen.
2 Mg + O2–>2 MgO
What mass, in grams, of MgO can be produced from 1.78 g of Mg and 2.36 g of O2?
Taking into account the reaction stoichiometry, 2.95 grams of MgO from 1.78 g of Mg and 2.36 g of O₂.
Reaction stoichiometryIn first place, the balanced reaction is:
2 Mg + O₂ → 2 MgO
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Mg: 2 molesO₂: 1 moleMgO: 2 molesThe molar mass of the compounds is:
Mg: 24.31 g/moleO₂: 32 g/moleMgO: 40.31 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Mg: 2 moles ×24.31 g/mole= 48.62 gramsO₂: 1 mole ×32 g/mole= 32 gramsMgO: 2 moles ×40.31 g/mole= 80.62 gramsLimiting reagentThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
Limiting reagent in this caseTo determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 32 grams of O₂ reacts with 48.62 grams of Mg, 2.36 grams of O₂ reacts with how much mass of Mg?
mass of Mg= (2.36 grams of O₂× 48.62 grams of Mg)÷ 32 grams of O₂
mass of Mg= 3.586 grams
But 3.586 grams of Mg are not available, 1.78 grams are available. Since you have less mass than you need to react with 2.36 grams of O₂, Mg will be the limiting reagent.
Mass of Mg formedConsidering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 48.62 grams of Mg form 80.62 grams of MgO, 1.78 grams of Mg form how much mass of MgO?
mass of MgO= (1.78 grams of Mg× 80.62 grams of MgO)÷ 48.62 grams of Mg
mass of MgO= 2.95 grams
Finally, 2.95 grams of MgO can be produced.
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What are possible indicators that a chemical reaction has occurred?
Which of the following compounds is capable
of dipole-dipole interactions?
SF6
CH4
H₂CO
CO₂
The capable of dipole-dipole interactions is H₂CO
Dipole-Dipole InteractionsDipole-dipole interactions, which result from the close association of induced or permanent dipoles, are weak interactions. Van der Waals interactions are the name given to these forces taken as a whole. These interactions are widespread in proteins and range widely in strength. Examples of polar compounds that interact dipole-dipole include hydrogen chloride (HCl), carboxylic acids (such as acetic acid), and amino acids. A polar molecule's positive end will pull another molecule's negative end and change the other molecule's location.
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a hypothetical molecule, X-Y, has a dipole moment of 1.68 D and a bond length of 177 pm. calculate the percent ionic character of this molecule
The percent ionic character of this molecule is 1.29 %
This is further explained below.
What is the percent ionic character of this molecule?[tex]\begin{aligned}\mu(\text { dipole moment })=1.100 \\d \text { (bond length) }=177 \mathrm{Pm} &=177 \times 10^{-12} \mathrm{~m} \\&=177 \times 10^{-12} \times 100 \mathrm{~cm} \\&=177 \times 10^{-10} \mathrm{~cm} \\\therefore \text { charge }=1.6 \times 10^{-19} \mathrm{C} &=4.8 \times 10^{-10} \text { es } \\\therefore \text { Ionic character }=\frac{\mu \text { observed }}{\mu \text { Ionic }(100 \%)} \times 100\end{aligned}[/tex]
[tex]\begin{aligned}\mu(100 \% \text { Ionic }) &=9 \times d \\&=4.8 \times 10^{-10} \times 177 \times 10^{-10} \mathrm{esucm} \\&=849.6 \times 10^{-20} \mathrm{esucm} \\&=8.496 \times 10^{-18} \mathrm{esucm} \end{aligned}[/tex]
because & 18=10^{-18}escecm
u =8.4960
Now Ionic character[tex]=\frac{r_{\text {obs. }}}{r(100 \% \text { Tonic })} \times 100[/tex]
[tex]&=\frac{1.10}{8.5} \times 100 \\\\&=\frac{110}{85}=1.29[/tex]
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345.50 grams of C6 H12 O6 = how many mol C6H12O6 ? - (MM=180.16g/mol).
Number of moles is 0.56 moles glucose.
calculation:-
We are given;
Mass of glucose solute is 50.50 g
Volume of solution is 500 mL
We are required to calculate the concentration of glucose.
We need to know that, molarity is the concentration of a solution in moles per liter.
Molarity = Number of moles ÷ Molar mass
Blood sugar, or glucose, is the primary sugar found in your blood. It comes from the food you devour, and is your body's foremost supply of strength. Your blood includes glucose to all your frame's cells to apply for energy. Diabetes is a sickness in which your blood sugar ranges are too excessive.
Glucose is the principle sort of sugar to your blood and your primary supply of energy in your frame's cells. Glucose comes from the foods you devour and is carried on your cells thru your bloodstream. Numerous hormones, such as insulin produced for your pancreas manage glucose tiers inside the blood.
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A plane takes off and is flying forward with 20,000 N of applied force, and experiences 10,000 N of air resistance. It has 20,000 N of gravitational force and 20,000 N of lift (upward) force. Show how the forces affect the plane and is it balanced or unbalanced.
The forces affecting the plane are unbalanced. There is a net force in the forwarding direction.
A force is an influence that can exchange the movement of an object. Pressure can cause an item with mass to exchange its velocity, i.e., to accelerate. the force also can be described intuitively as a push or a pull. A pressure has each importance and direction, making it a vector quantity.
The internet force is the vector sum of forces appearing on a particle or object. The internet force is a single force that replaces the impact of the unique forces on the particle's movement.
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Erica measures a piece of metal and determines it has a mass of 20 grams and a volume of 2 mL. What is the density of the piece of metal?
OA. 20 g/mL
OB. 10 g/mL
O C. 5 g/ml
OD. 0.2 g/ml
Answer:
B: 10 g/ml
Explanation:
The formula for density is mass/volume.
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7.0 mol AgNO3 can form
3.5 mol Zn(NO3)2 and 3.0 mol Zn can
form 3.0 mol Zn(NO3)2. How many
moles of Zn(NO3)2 can form during the
reaction?
Based on the mole ratio from the reaction, the number of moles of Zn(NO₃)₂ that can be formed in the reaction is 3 moles.
What is the number of moles of Zn(NO₃)₂ that can be formed in the reaction?The number of moles of Zn(NO₃)₂ that can be formed in the reaction is determined from the mole ratio of the reaction in the given data.
Equation of the reaction:
2 AgNO₃ (aq) + Zn (s) ----> Zn(NO₃)₂ (aq) + 2 Ag (s)
From the data provided, 7.0 mol AgNO₃ can form 3.5 mol Zn(NO₃)₂.
The mole ratio of AgNO₃ can form 3.5 mol Zn(NO₃)₂; mole ratio is 2: 1
Also, 3.0 mol Zn can form 3.0 mol 3.5 mol Zn(NO₃)₂; mole ratio is 1 : 1
Mole ratio of AgNO₃ (aq) to Zn (s) is 2 : 1
The limiting reagent is Z
Moles of Zn(NO₃)₂ formed = moles of Zn reacted
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Answer: 3.0
..............................
Calculate the number of grams present in 100 atoms of aluminum?
Answer
1 mole Al= 27gm
6.022X10^23 atoms of Al=27 gm
1 atom Al=( 27/6.022X10^23)gm
100 atom Al= (27/6.022X10^23) X 100 gm
= 4.4835 X 100 X 10^-23
= 4.4835X( 10^-21) gram====>>answer
How many grams of silver/IN dichromate are neiled)when 353 p of Tin 1 hydrogen carbonate is complailyused up in a double displacement reaction? Use the following balanced equation:1 Sn(HCO3)2 + 1 Ag›Cr207 ---> 1 SnCr207 + 2 AgHCO3
Answer:
[tex]63.63\text{ g}[/tex]Explanation:
Here, we want to get the mass of silver(I) dichromate needed
Firstly, we need to get the number of moles of Tin(I) Hydrogen Carbonate used up
To get this, we have to divide the mass used up, by the molar mass
The molar mass of Tin(I) Hydrogen Carbonate is 241 g/mol
Mathematically:
[tex]Number\text{ of moles = }\frac{mass}{molar\text{ mass}}[/tex]We have the number of moles as:
[tex]Number\text{ of moles = }\frac{35.5}{241}\text{ = 0.1473 mole}[/tex]From the equation of reaction, 1 mole of Tin hydrogen carbonate used 1 mole of silver dichromate
That means 0.1473 mole of the carbonate will also use 0.1473 mole of the dichromate
Now, to get the mass of the dichromate, we have to multiply the number of moles by the molar mass of the dichromate
The molar mass of the dichromate is 432 g/mol
Thus, we have the mass used up as:
[tex]0.1473\text{ }\times\text{ 432 = 63.6 g}[/tex]Humans and other mammals breathe in oxygen from the air for respiration.
At the top of Mt Everest, assume the atmospheric pressure is 0.500 atm and the temperature is -35.0°C. Assume that the volume of one breath is still 0.500 L. Calculate the number of moles of air in one breath at the top of Mt Everest.
Remember the gas constant, R, is 0.08206 L'atm/mol-K.
Humans and other mammals breathe in oxygen from the air for respiration. the number of moles of air in one breath at the top of Mt Everest is 0.0128 mol
The expression for ideal gas equation is :
PV = n RT
P is pressure = 0.500 atm
V is volume = 0.500 L
R is gas constant = 0.08206 L atm / mol K
T is temperature = -35 °C = 238 K
n is no. of moles
substituting the values in formula , we get :
PV = nRT
n = PV / RT
n = ( 0.500 × 0.500 ) / (0.08206 × 238)
n = (0.25 / 19.53 ) mol
n = 0.0128 mol
Thus, Humans and other mammals breathe in oxygen from the air for respiration. the number of moles of air in one breath at the top of Mt Everest. assume the atmospheric pressure is 0.500 atm and the temperature is -35.0°C. is 0.0128 mol
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What is the temperature (in K) of a sample of helium with an root-
mean-square velocity of 450.0 m/s? The universal gas constant,
R=8.3145 J/mol.K.
Temperature of the sample helium with an root-mean-square velocity of 450.0 m/s is 32.47K
What is root mean square (rms) velocity?The value of the square root of the sum of the squares of the stacking velocity values divided by the number of values is the root-mean square (rms) velocity.
As we know, from Maxwell's speed distribution, the rms speed of velocity of gas is given by,
[tex]V_{rms}[/tex] = [tex]\sqrt{3RT/M}[/tex]
450 = [tex]\sqrt{(3*8.3145*T)/4*10^{-3} }[/tex] [ Mass of helium = 4.00 u]
T = 32.47 K
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if 2.00 moles of H2 and 1.55 moles of o2 react how many moles of exess reagent will be left over 2H2(g)+O2(g)=2H2O (g)
2 moles of excess reagent will be left over 2H2 + O2 = 2H20 when 2 moles of H2 and 1.55 moles of oxygen react.
What is a mole and how many moles of excess reagent will be left over ?A mole is one of the seven fundamental quantity to determine the amount of substance present in per litre of solution.In the question is given the number of moles of hydrogen is 2 moles, number of moles of oxygen is 1.55 .2H2 + O2 = 2H20 is the balanced equation of the question upon which we will calculate the number of moles which will be left over.Because two moles of water molecules is formed by then all the hydrogen molecules would already have been consumed.The remaining amount of oxygen will remain unreacted , in the reaction .To know more about moles visit:
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What is the mass of water in a 23.5 % solution containing 15.9 g of potassium chlorate?
Considering the definition of percentage by mass, the mass of water in a 23.5 % solution containing 15.9 g of potassium chlorate is 50.63 grams.
Definition of percentage by massThe percentage by mass expresses the concentration and is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage:
percentage by mass= (mass of solute÷ mass of solution)× 100%
Mass of waterIn this case, you know:
percentage by mass= 23.5%mass of solute= 15.9 gmass of water= ?Replacing in the definition of percentage by mass:
23.5%= (15.9 grams÷ mass of solution)× 100%
Solving:
23.5%÷ 100%=15.9 grams÷ mass of solution
0.235= 15.9 grams÷ mass of solution
0.235× mass of solution= 15.9 grams
mass of solution= 15.9 grams÷ 0.235
mass of solution= 66.53 grams
Considering that the mass of solution is the sum of mass of solute and mass of water, the mass of water can be calculated as:
mass of solution= mass of solute + mass of water
66.53 grams= 15.9 grams + mass of water
66.53 grams- 15.9 grams= mass of water
50.63 grams= mass of water
Finally, the mass of water is 50.63 grams.
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7.Which of the following symbols indicates "water solution"?Select one:a. (s)b. (l)c. (g)d. (aq)
Whenever we have a solution with a solvent like water, and a solute that is dissolved in water, we can identify this dissolved solution as an aqueous solution, therefore the symbol will be (aq), letter D
The joule (J) is a unit of energy. Recall that energy may be converted between many different forms such as mechanical energy, thermal energy (heat), chemical energy, electrical energy, and light.
The mechanical energy produced by a system is called work. When work is accomplished through the changing volume of a gas, it is called PV work and is given by the formula w=−PΔV, where w is the work, P is the external pressure, and ΔV is the change in volume. If the volume change and pressure are in liters and atmospheres respectively, then the work will have units of liter-atmospheres, which can be converted to joules using the conversion factor 1 L⋅atm=101.3 J.
Work can also be expressed as force multiplied by distance: w=F×d, where w is the work in joules, F is the force in newtons, and d is the distance in meters. Note that 1 N⋅m=1 J.
A piston has an external pressure of 5.00 atm . How much work has been done in joules if the cylinder goes from a volume of 0.180 liters to 0.590 liters?
Express your answer with the appropriate units.
The pressure and work done is Atm = -177.275 J. Workdone = 1.75 L.
Given,
5 atm of external pressure
Volume initial = V(initial) = 0.160 L
Volume final = V(final) = 0.510 L
The piston pushes back against the constant 5.00 atmospheres of external pressure. Volume increases from 0.160 L to 0.510 L.
W = -PΔV
P = 5.00 atm
V = V(initial) - V(final) = 0.510 - 0.160 = 0.35 L
W = - 5 × 0.35 = - 1.75 L.atm
Then, this effort may be represented in Joules.
1 L.atm = 101.3 J
-1.75 L.atm = -1.75 × 101.3 = -177.275 J
Keep in mind that the work done is negative since the system affects the environment in this expansion scenario, which caused a volume rise.
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A golden-colored cube is handed to you. The person wants you to buy it for $100, saying that is a gold nugget. You pull out your old geology text and look up gold in the mineral table, and read that its density is 19.3 g/cm3. You measure the cube and find that it is 2 cm on each side, and weighs 40g. What is its density? Is it gold? Should you buy it? Make sure you include units and provide details to support your response.
The density is 5g/cm³ and the cube is not gold and i will not buy it
Density is the mass of the object divided by its volume gives the density of the object
Here given data is
Mass = 40g
Volume of cube = 2cm
Volume = 2³
Volume = 2×2×2cm³
Volume = 8cm³
Density of cube = ?
Then formula of density is
Density = mass/volume
Density of cube = 40g/ 8cm³ = 5g/cm³
Therefore, the given gold has density = 19.3 g/cm³ and cube density is less than of gold so cube is not a gold and i will not buy it
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Read the selection from the section "Yeast And Fermentation."
For example, the organelles in yeast allow it to perform processes like fermentation. Humans have long harnessed fermentation to make bread, wine, beer, and even biofuel. Fermentation is possible because of certain enzymes within yeast that allow it to convert sugars into alcohol.
Which two words would BEST replace "harnessed" and "convert" in the selection above?
controlled; blend
admired; separate
rejected; remove
used; transform
The correct answer is used, transform. Option D.
The word used means to control and use and the word transform means to change or transform. The other options are incorrect because they have different meanings than bind and convert. Adjective superlative of good better than comparative Highest Quality Excellence or Reputation Best Work best student.
Most Advantageous Most Suitable, or Most Desirable Best Way. Replace something or put something or someone in place of something or someone else Factories have replaced most of their workers with robots. Best can be a noun. Marilyn only wanted the best for herself and her family. As an adverb, it's best to modify a verb. is the best. The noun best may or may not be countable.
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[tex]2CH_{3}OH + 3O_{2}[/tex] → [tex]2CO_{2} + 4H_{2}O[/tex]how many moles of [tex]CH_{3}OH[/tex] are needed to produce 3 moles of [tex]CO_{2}[/tex]?
1) Balance the chemical equation.
[tex]CH_3OH+O_2\rightarrow CO_2+H_2O[/tex]2) List the elements in the reactant and in the products.
Reactants:
C: 1
H: 4
O: 3
Products:
C: 1
H: 2
O: 3
BalanceH.
[tex]CH_3OH+O_2\operatorname{\rightarrow}CO_2+2H_2O[/tex]Reactants:
C: 1
H: 4
O: 3
Products:
C: 1
H: 4
O: 4
Balance oxygen
[tex]CH_3OH+\frac{3}{2}O_2\operatorname{\rightarrow}CO_2+2H_2O[/tex]Multiply every coefficient by the denominator
[tex]2CH_3OH+3O_2\operatorname{\rightarrow}2CO_2+4H_2O[/tex]Reactants:
C: 2
H: 8
O: 8
Products:
C: 2
H: 8
O: 8
3) Moles of CH3OH needed to produce 3 mol CO2.
The molar ratio between CH3OH and CO2 is 2 mol CH3OH: 2 mol CO2.
[tex]mol\text{ }CH_3OH=3\text{ }mol\text{ }CO_2*\frac{2\text{ }mol\text{ }CH_3OH}{2\text{ }mol\text{ }CO_2}[/tex][tex]mol\text{ }CH_3OH=3\text{ }mol\text{ }CH_3OH[/tex]The moles of CH3OH needed are 3 mol.
.
why is molarity important?
• To determine whether a particular solution is ,concentrated ,or ,diluted
,• To determine the ,actual concentration ,of a solution
Explanations:When a chemical is added to a solution, chemical solutions are formed. Molarity is used in expressing the concentration of a solution. Molarity is the ratio of the number of moles of a solute to the volume of its solution.
Importance of molarityMolarity is important to determine whether a particular solution is concentrated or diluted. It is also used to determine the actual concentration of a solution
Hence, to determine the concentration of any solution, the moles of the element and its volume in solution are required.
what volume would the helium gas occupy at a pressure of 1.00 atm?
Answer: 11.1 L.
Explanation: A balloon filled with helium gas at 1.00 atm occupies 11.1 L.
Consider the gas is taken at STP. Thus at standard temperature and pressure of 1 atm where one mole of any gas contains 22.41 L. Thus helium gas at 1 atm pressure contains 22.414 L/mol
What is helium?Helium is 2nd element in periodic table. It is a noble gas ncluded in the 18th group. Helium is the second most abundant element in the universe. Stars including sun is made of helium gas and hydrogen gas.
The condition at which the temperature is 298 K and pressure of 1 atm is called standard temperature and pressure or STP condition. At STP one mole pf every substance contains 22.414 liter of the gas.This is called molar volume.
Therefore, the volume of helium gas at 1 atm pressure by considering the condition of STP and the gas if taken is one moles will be 22.414 liter. This is the volume of one mole of all gas at stp.
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Infrared and ultraviolet light are both part of the electromagnetic spectrum. How is infrared light different from ultraviolet light?
a
Only ultraviolet light comes from the Sun.
b
Only ultraviolet light travels at the speed of light.
c
Infrared light has a higher frequency than ultraviolet light.
d
Infrared light has longer wavelengths than ultraviolet light.
In the electromagnetic spectrum, the infrared and UV light differ by the fact that infrared light has longer wavelengths than UV light.
What is electromagnetic spectrum?
The electromagnetic spectrum consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.
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Atoms can form single, double, and triple covale bonds by sharing one or more pairs of electrons. What type of covalent bond forms between two nitrogen atoms?
Answer:
Nitrogen atom has 5 electrons in the outer shell so it needs 3 more electrons. Therefore a triple covalent bond will form between 2 nitrogen atoms
Explanation:
Kevin drops a pile of roof shingles from the top of a roof located at 8.52 meters above the ground
Determine the time required for the singles to reach the ground.
The time required for the shingles to reach the ground is t = 1.32s
Given = distance(S) = 8.52 meters
initial velocity = u =0
g = 9.8
To find the time, use the equation,
S = ut + 1/2at²
8.52= 0(t) + 0.5(9.8)t²
t = 1.32s
The time required for the shingles to reach the ground is t = 1.32s
What is gravity?The force that pulls items toward the center of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity.
The acceleration that gravity gives to objects falling freely serves as a gauge of its strength. The acceleration of gravity at Earth's surface is approximately 9.8 meters (32 feet) per second every second. As a result, during free fall, an object's speed rises by around 9.8 meters per second.
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The wave particle duality of matter is-
HELP PLEASEEE!
Answer:
C.) the idea that items like electrons can be described as both a particle and a wave
1 (
Which plant needs wind for fertilization to occur? (1 point)
o lily
O pine tree
O rosebush
O fern
Answer:
b) Pine Tree
Pine trees need wind for fertilization to occur.
Answer:
Gymnosperm, So in reality its Pine Tree. ;):)
Explanation:
Gymnosperm Fertilization The female gametophyte contains several archegonia, where the egg cells originate and develop. Fertilization occurs when pollen grains (male gametophytes) are carried by the wind to the open end of an ovule, which contains the eggs, or female gametophyte.
Question 60/1 pt 101 DetailsIf it takes 0.621 L of 0.7 M NaOH to neutralize 9.3 L of an HCLsolution, what is the concentration of HCL?
Answer:
The concentration of HCl is 0.0467 M.
Explanation:
What is given?
Volume 1 (V1) = 0.621 L,
Concentration 1 (C1) = 0.7 M,
Volume 2 (V2) = 9.3 L.
What do we need? Concentration 2 (C2).
Step-by-step solution:
To solve this problem we have to use the following formula:
[tex]C_1V_1=C_2V_2.[/tex]Where in this case, concentration and volume 1 correspond to NaOH, and concentration and volume 2 correspond to HCl.
We want to find the concentration of HCl so we have to solve for 'C2' and replace the given data in the formula, like this:
[tex]\begin{gathered} C_2=\frac{C_1V_1}{V_2}, \\ \\ C_2=\frac{0.7\text{ M}\cdot0.621\text{ L}}{9.3\text{ L}}, \\ \\ C_2=0.0467\text{ M.} \end{gathered}[/tex]The answer would be that the concentration of HCl is 0.0467 M.
(The question is in the photo Sorry lol) A sample of a gas occupies 1212 milliliters at 20.0°C and 6756 torr. What volume would it occupy at the same temperature and 289 torr?Answer in units of mL.Please leave all the numbers after the decimal in the final answer
To solve this problem we need to use Boyles gas Law:
[tex]P_1V_1=P_2V_2[/tex]Given:
V1 = 1212 mL
P1 = 6756 Torr
P2 = 289 Torr
V2= ?
V2 = P1V1/P2
V2 = (6756 torr x 1212 mL)/289 torr
V2 = 28333.12111 mL
Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H₂O).
Suppose 17. g of hydrochloric acid is mixed with 6.44 g of sodium hydroxide. Calculate the minimum mass of hydrochloric acid that could be left over by the
chemical reaction. Round your answer to 2 significant digits.
The minimum mass of hydrochloric acid that could be left over by the
chemical reaction, is nearly 12.0 grams.
How to calculate leftover mass?According to given reaction is :
HCl +NAOH --> NaCl + H2O
mass of HCl = 35 g
molar mass of HCl=36.46 g/mol
moles of HCl present = 35 g/36.46 g/mol =0.466 moles
mass of NaOH = 6.44 g
molar mass of NaOH= 40 g/mol
moles of NaOH present = 28.7 g/40g/mol = 0.161 moles
Moles of HCl is more than that of NaOH. Hence limiting reactant is NaOH
It will consume completely
mole ratio HCl : NaOH= 1:1
thus moles of HCL consumed = moles of NaOH present =0.141 moles
moles of HCl remaining = 0.466 moles- 0.141 moles = 0.325 moles
molar mass of HCl= 36.46 g/mol
mass of HCl remaining = moles of HCl remaining* molar mass
= 0.325 mol *36.46 g/mol = 11.84 g
after rounding
mass = 12.0 g
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https://brainly.com/question/26905271
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