Partner Name: Trial 1 Trial 2 Mass of Magnesium strip reacted 0 0151g/0.0 1399 , volume of gas in buret (step 7) 14.5 Was there a gas bubble before reaction? Yes NO Volume of gas in ungraduated region of buret (using graduated cylinder, step 12) Atmospheric pressure Height of the liquid column . sou 30.03 1469.9m482.6 mid 22°C 119.8 mm to 19.B Temperature 295.15K Vapor pressure of H2O
Answers
The vapor pressure of water at the given temperature is 17.54 mmHg.
The experiment involved reacting a magnesium strip to produce hydrogen gas, which was collected in a buret.
The mass of the magnesium strip used in Trial 1 was 0.0151g, while in Trial 2 it was 0.01399g. The difference in mass was likely due to experimental error.
The volume of gas collected in the buret was 14.5 mL.
The experiment did not indicate whether there was a gas bubble before the reaction, so we cannot take that into account.
The volume of gas in the ungraduated region of the buret was not given.
The atmospheric pressure was 760 mmHg.
The height of the liquid column in the buret was 482.6 mm at a temperature of 22°C (295.15K).
Using the values for atmospheric pressure, liquid column height, and temperature, we can calculate the vapor pressure of water using a reference table or an online calculator. The calculated vapor pressure of water at 22°C is 17.54 mmHg.
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Related Questions
is c4 a compound or and element
Answers
Answer:
Element
Explanation:
It's C4 so there are four carbons.
Hope this helped! :))
What is true about ionic compounds?
Select all that apply.
A. Properties of the compound are different than the properties of individual atoms that make the compound.
B. Electrons are not involved in the formation of an ionic bond, since ions do not have valence electrons.
C. Electrons are not free to move.
D. They may have a positive or negative charge.
Answers
What is the pressure in a 15.0- LL cylinder filled with 0.470 molmol of nitrogen gas at a temperature of 322 KK
Answers
The pressure of a gas can be calculated using the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin.
In this case, we know the number of moles of nitrogen gas (n = 0.470 mol), the temperature (T = 322 K), and the volume of the cylinder (V = 15.0 L). To find the pressure, we can rearrange the ideal gas law to solve for P:
P = nRT/V
Substituting the given values, we get:
P = (0.470 mol)(8.314 J/mol·K)(322 K)/(15.0 L)
P = 449.26 kPa
Therefore, the pressure in the 15.0-L cylinder of nitrogen gas at a temperature of 322 KK is 449.26 kPa.
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You have forgotten the ideal gas constant. Describe an experiment, similar to this one, that would allow you to determine the value for r. What information would you need to know about the h2o2 solution?.
Answers
We would need to know the concentration , volume and moles of hydrogen peroxide in order to determine the stoichometry .
What is H2O2 and what would be the suitable experiment allowing to determine the value of r and what information for h2o2 is needed?H2O2 is a chemical compound used in various chemical reactions and is slightly viscous than water .We will experiment by decomposition of hydrogen peroxide, and using the Ideal gas law rearrangement equation we can calculate the value of r .In such equation PV = rT , and hence r = PV/T where P is pressure and T is temperature.We will determine the temperature of oxygen using thermometer and in the other side we got hydrogen peroxide.This hydrogen peroxide will be bubbled through water, and we will need the information such as concentration, volume and moles of h2o2 to determine its stoichmetry.To know more about solution visit:
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how many grams of h2so4 must be dissolved in 1.08 l of solution to generate a solution with a concentration of 2.69 m
Answers
The mass of H₂SO₄ that must dissolved in 1.08 liters of solution to make 2.69M solution is 271.52 grams.
The molarity of the substance is defined as the number of moles of solute per unit volume of solution in liters.
In this case,
The volume of the solution is 1.08 L.
The required molarity of the substance is 2.69M.
So,
we can write,
Molarity = Moles/Volume
Moles = Molariyt x volume
Moles =2.69 x 1.03
Moles = 2.77
Moles = Mass required/molar mass.
Molar mass of H₂SO₄ is 98 g/mol.
Putting values,
2.77=Mass required/98
Mass required = 271.52 grams.
So, 271.52 grams of H₂SO₄ is required to make 2.69M solution.
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Atoms become ions by ____________ or _______________ electrons to become _____________.
Answers
Answer:
gaining or losing to become ions or to become positive/negative
In a home, what would cause air to cool and sink? and what would make that cooler air actually rise again?
Answers
Step-by-step explanation I hope what I put above helped if not comment back
Which of these describes an ethical dilemma that drug designers could face?
a. whether people should take medicine or if instead they should
seek alternative treatments.
b. a drug lowers blood pressure but can cause severe coughing
spells.
c. a new drug is effective in preventing cancer cells from
reproducing
o d. a drug for blood pressure is absorbed in the colon. it is effective,
but occasionally it can erode the colon walls.
Answers
The statement 'whether people should take medicine or if they should seek alternative treatments' describes an ethical dilemma that drug designers face.
What is drug development?Drug development refers to all the processes from target drug identification to drug validation and commercialization.
Drug development involves different stages of development including preclinical and clinical trials.
Ethical dilemmas in drug development include the release of a drug that is ineffective when compared to parallel treatments.
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Answer:
A drug for blood pressure is absorbed in the colon. It is effective, but occasionally it can erode the colon walls.
Explanation:
i just took the test and got it right.... i hope this helps :)
Atoms of which pair of elements will form ionic bonds in a compound?
Answers
How many moles of KBr will be produced from 7 moles of BaBr2?
BaBr2 + K2SO4 --> 2 KBr + BaSO4
1 mole KBr
7 moles KBr
3.5 moles KBr
14 moles KBr
Answers
1 mol BaBR2 produces 2mol KBr .
7 mol s of BaBr_2 produces:-
7(2)14mol KBrOption D is correct
Which substance has the greatest intermolecular forces
Answers
Answer:
Water
Explanation:
there exists hydrogen bond in it, making it the substance with the greatest intermolecular forces of attraction.
Acetyl chloride reacts with acetic acid to form a(n) _____ with _____. Multiple choice question. ester; two carbon atoms in total acid anhydride; two carbon atoms in one C
Answers
Acetyl chloride reacts with acetic acid to form an ester with HOCl. A chemical reaction involves a procedure that causes one group of chemical components to change chemically into another.
A chemical reaction involves a procedure that causes one group of chemical components to change chemically into another. Traditionally, only changes in the locations of electrons within the formation and dissolution of chemical bonds amongst atoms are included in chemical processes.
The study of chemical processes involving unstable and radioactive elements, where both electronic or nuclear changes may take place, is known as nuclear chemistry. Acetyl chloride reacts with acetic acid to form an ester with HOCl.
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What will be the products in the reaction: AI + BaCI2
Answers
—->3Ba+2AlCl3 to balance the equation
A2B8 + C2 - B2C + AC2
Answers
Answer:
You need to put more info! If you are trying to find the GCF its 1
A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.
Answers
Answer:
The mass of NaCl needed for the reaction is 91.61 g
We'll begin by calculating the number of mole of F₂ that reacted.
Volume (V) = 12 L
Temperature (T) = 280 K
Pressure (P) = 1.5 atm
Gas constant (R) = 0.0821 atm.L/Kmol
Number of mole (n) =?
PV = nRT
1.5 × 12 = n × 0.0821 × 280
18 = n × 22.988
Divide both side by 22.988
n = 18 / 22.988
n = 0.783 mole
Next, we shall determine the mole of NaCl needed for the reaction.
F₂ + 2NaCl —> Cl₂ + 2NaF
From the balanced equation above,
1 mole of F₂ reacted with 2 moles of NaCl.
Therefore,
0.783 mole F₂ will react with = 0.783 × 2 = 1.566 moles of NaCl.
Finally, we shall determine the mass of 1.566 moles of NaCl.
Mole = 1.566 moles
Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol
Mass of NaCl =?
Mass = mole × molar mass
Mass of NaCl = 1.566 × 58.5
Mass of NaCl = 91.61 g
Therefore, the mass of NaCl needed for the reaction is 91.61 g
Explanation:
When treated with base, the following compound undergoes an intramolecular aldol reaction to give a product containing a ring. Propose a structure for this product. base C11H180 + H20 . . • Consider EIZ stereochemistry of alkenes. • Do not show stereochemistry in other cases. • If there is more than one major product possible, draw all of them. Draw organic products only • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. •
Separate multiple products using the + sign from the drop-down menu.
Answers
The product obtained after the intramolecular aldol reaction of 2-pentanone (C5H10O) with a strong base is a six-membered cyclic ring with a double bond and an alcohol group.
When treated with a base, the compound C11H18O undergoes an intramolecular aldol reaction to give a product containing a ring. To propose a structure for this product, follow these steps:
Identify the carbonyl group (C=O) in the compound, which will act as the electrophile in the reaction.Identify the alpha-hydrogen adjacent to the carbonyl group, which will act as the nucleophile upon deprotonation by the base.Deprotonate the alpha-hydrogen using the base to form an enolate ion.Perform a nucleophilic attack by the enolate ion on the carbonyl group within the same molecule, resulting in the formation of a new C-C bond.Tautomerize the product, if necessary, to give the final aldol product with an alkene group (considering E/Z stereochemistry of alkenes).If there is more than one major product possible, draw all of them.The product structure is shown below: Thus, the product obtained after the intramolecular aldol reaction of 2-pentanone (C5H10O) with a strong base is a six-membered cyclic ring with a double bond and an alcohol group.
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What us the % composition of oxygen (O) in iron (III) hydroxide, Fe(OH)
3?
Answers
Answer:
44.91% of Oxygen in Iron (III) hydroxide
Explanation:
To solve this question we must find the molar mass of Fe(OH)3 and the molar mass of the oxygen in this molecule. Percent composition will be:
Molar mass Oxygen / molar mass Fe(OH)3 * 100
Molar mass Fe(OH)3 and oxygen:
1Fe = 55.845g/mol*1 = 55.845
3O = 16.00g/mol*3 = 48.00 - Molar mass of Oxygen
3H = 1.008g/mol*3 = 3.024
55.845 + 48.00 + 3.024 =
106.869g/mol is molar mass of Fe(OH)3
% Composition of oxygen is:
48.00g/mol / 106.869g/mol * 100 =
44.91% of Oxygen in Iron (III) hydroxideSelect the correct answer from each drop-down menu.
Scientific theories are always
testable
. A theory may be changed as a result of
.
Answers
Scientific theories are always testable. A theory may be changed as a result of new observations.
What are Scientific theories ?A scientific theory is a set of laws, facts and hypotheses that have a complete vision of an aspect of reality.
It is a proposed explanation for a set of observable phenomena.
It allows in this way to organize and understand the observations and to be able to predict or provoke other future observations.
Theories can be modified or improved as more information is collected.
That is, theories can continue to be tested indefinitely, and eventually rejected, if the tests lead to it.
Therefore, a scientific theory is testable by using a research method.
As mentioned, any theory can be tested or rejected as more information is collected.
This information to prove or reject theories are interpretations of observable facts, which generates new statements or allows to accept those already included in the theory.
Then, a theory may be changed as a result of new observations.
Finally, scientific theories are always testable. A theory may be changed as a result of new observations.
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Answer:
testable & new observations
Explanation:
Name the nutrient present in cooked rice , a boiler eggs
Answers
Explanation:
cooked rice
nutrient
carbohydrate.
Boiler eggs
nutrient
Protein.
Consider the following reaction: 2Mg + CO2 <--> 2MgO + C . A laboratory technician wants to increase the amount of MgO produced. Which of the following is the best way to accomplish this?
Add catalyst
increase the carbon
decrease the carbon
decrease the Mg
Answers
This problem is providing the equilibrium reaction between magnesium and carbon and asks for a way to increase the amount of magnesium oxide, a product. Thus, the answer turns out to be decrease the carbon.
Le Cha telier's principle.In chemistry, when a chemical reaction attempts to go to completion, it might experience a limitation known as equilibrium; a condition where it is not able to proceed any further.
In such a way, for the given reaction:
\(2Mg+CO_2\rightleftharpoons2MgO+C\)
One can see that the increase of magnesium oxide, as required, can be accomplished by either increasing any reactant or removing any product in order to shift the equilibrium towards it.
In such a way, one concludes that the correct choice is decrease carbon as it will shift the reaction towards the product; however, we must keep in mind that neither solid nor liquid species contribute to the equilibrium.
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4.1 kg of a plastic, used to make plastic bottles, has a carbon footprint of 6.0 kg of carbon dioxide.
Calculate the carbon footprint of one plastic bottle of mass 23.5 g
Answers
Answer:
The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.
Explanation:
The carbon footprint of one plastic bottle can be estimated by simple rule of three. That is:
\(x = \frac{23.5\,g}{4100\,g}\times 6000\,g\)
\(x = 34.390\,g\)
The carbon footprint of one plastic bottle of mass 23.5 g is 34.390 g.
Answer is D
Relatively slow rates of chemical reaction are associated with which characteristic?
A)
High temperature
B)
Low activation energy
C).
The presence of a catalyst
D)
Strong bonds in reactant molecules
Answers
Option D : Strong bonds in reactant molecules
The strong bonds in reactant molecules sometimes needs extra energy to weaken the bond and proceed the reaction. Hence, option D is correct.
What is reaction rate ?The rate of a reaction is the rate of decrease in concentration of the reactants or decrease in concentration of the reactants or increase in the concentration of the products.
The minimum energy required to overcome the barrier potential of a reaction is called its activation energy. Hence, lower the activation energy higher will be the reaction rate.
High temperature and presence of catalyst also leads to higher rate. Strong bonds in reactants needs higher energy to weaken the intermolecular force. Thus, slower the reaction rate.
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40.0 mL of 0.200 N NaOH is mixed with 60.0 mL of 0.300 N HCl. What is the normality of the remaining H+ if the final volume is 100.0 mL?
Answers
The normality of the remaining H+ ions in the mixed solution is 0.180 N.
To determine the normality of the remaining H+ ions after mixing 40.0 mL of 0.200 N NaOH with 60.0 mL of 0.300 N HCl, we need to use the principles of acid-base neutralization reactions and the concept of the equivalence point.
The balanced chemical equation for the reaction between NaOH and HCl is:
NaOH + HCl → NaCl + H2O
In this reaction, one mole of NaOH reacts with one mole of HCl to form one mole of NaCl and one mole of water. At the equivalence point, all of the NaOH has reacted with the HCl, and the solution contains only NaCl and water.
To find the normality of the remaining H+ ions, we can first calculate the number of moles of H+ ions that are present in the HCl solution before mixing:
moles of H+ = (0.300 N) x (0.0600 L) = 0.0180 moles
Since the volume of the final solution is 100.0 mL, we can use the equation for dilution to calculate the final concentration of the H+ ions:
M1V1 = M2V2
where M1 and V1 are the initial concentration and volume of the HCl solution, and M2 and V2 are the final concentration and volume of the mixed solution.
Rearranging the equation, we get:
M2 = (M1V1)/V2
Substituting the values, we get:
M2 = (0.300 N x 0.0600 L)/(0.100 L) = 0.180 N
Therefore, the normality of the remaining H+ ions in the mixed solution is 0.180 N.
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A 0.100 m solution of which one of the following solutes will have the lowest vapor pressure?
a. sucrose
b. Al(ClO4)3
c. NaCl
d. KClO4
e. Ca(ClO4)2
Answers
To determine which 0.100 m solution will have the lowest vapor pressure, we need to consider the number of solute particles each substance will produce when dissolved in water. The more solute particles present, the lower the vapor pressure.
a. Sucrose: Since it is a non-electrolyte, it will not dissociate in water. Number of particles produced = 1.
b. Al(ClO₄)₃: When dissolved, it will dissociate into 1 Al³⁺ ion and 3 ClO₄⁻ ions. Number of particles produced = 1 + 3 = 4.
c. NaCl: When dissolved, it will dissociate into 1 Na⁺ ion and 1 Cl⁻ ion. Number of particles produced = 1 + 1 = 2.
d. KClO₄: When dissolved, it will dissociate into 1 K⁺ ion and 1 ClO₄⁻ ion. Number of particles produced = 1 + 1 = 2.
e. Ca(ClO₄)₂: When dissolved, it will dissociate into 1 Ca²⁺ ion and 2 ClO₄⁻ ions. Number of particles produced = 1 + 2 = 3.
The 0.100 m solution of Al(ClO₄)₃ (option b) will have the lowest vapor pressure, as it produces the highest number of solute particles (4) when dissolved in water.
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does all Newton's laws work together
Answers
Definition: The time in an age-structure diagram where the population is not yet reproducing.
Answers
Answer:
Explanation:An age-structure diagram provides a snapshot of the current population and can represent information about the past and give potential clues about future problems. When you are interpreting age-structure diagrams, it is important to compare the width of the base to the rest of the population
which of the following substances contain metallic bonds?
A. cast iron
B. sodium chloride
C. copper
D. argon
E. zinc sulfide
Answers
Sep Obtain Information What are the Limitation to Making Progre with Engineering Better Batterie ? What progre have Battery Engineer Made?
Answers
Better batteries deals with Rechargeable lithium batteries are in the research phases where commercial usage of some of the new types of batteries is not possible so far.
These batteries have the potential to power portable electronics of today's time. It can store more energy in any given volume and leads to longer battery life. By changing the electrolyte composition it has made it safe for long term use. However these changes are not able to reflect on commercial scale.
Currently battery engineers are looking at improving use of these batteries in smart grid and electrical transports. For instance, researchers find that the energy density of lithium-sulfur (Li-S) batteries is five times higher in comparison to Li-ion batteries. Even they are most cost effective. But there is a major challenge of dropping voltage rapidly with use.
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Balance the equation C4H8 (g) + ?O2(g) → ? CO2 (g) + ? H2O (g), using the smallest possible integers. What is the coefficient of CO2?
Answers
14. Distillation and evaporation are methods to
A. create molecules from atoms
B. create atoms from molecules
C. desperate the components of mixtures
D. combine the components of mixtures
Pls help
Answers
THE ANSWER IS YO MAMA
JK IT'S B