Answers
From the balanced chemical equation: SiC + 2Cl2 -> SiCl4 + C
Molar mass of SiC = 40.10 g/mol
Molar mass of Cl2 = 70.91 g/mol
Molar mass of SiCl4 = 169.9 g/mol
Number of moles of SiC = 48.91 g / 40.10 g/mol = 1.221 mol
Number of moles of Cl2 = (14.048 L) * (1 mol / 22.414 L) = 0.6268 mol (using the ideal gas law at STP)
Using the stoichiometric coefficients, we can see that 1 mol of SiC produces 1 mol of SiCl4, so the theoretical yield of SiCl4 is equal to the number of moles of SiC, which is 1.221 mol.
We can calculate the mass of theoretical yield of SiCl4 using its molar mass:
Mass of SiCl4 (theoretical) = 1.221 mol * 169.9 g/mol = 207.4 g
Now, we can calculate the percent yield:
Percent yield = (actual yield / theoretical yield) * 100%
We are given that the actual yield of SiCl4 is 31.527 grams.
Percent yield = (31.527 g / 207.4 g) * 100% = 15.2%
Therefore, the percent yield of the reaction is approximately 15.2%.
Related Questions
When you increase the amount of carbon dioxide in the atmosphere, you also increase the amount of _____ in the ocean.
Answer: Carbonic acid
Answers
When you increase the amount of carbon dioxide in the atmosphere, you also increase the amount of carbonic acid in the ocean.
What happens when you increase the amount of carbon dioxide?Carbon dioxide is absorbed from the atmosphere into the ocean through a process called "oceanic uptake," which is facilitated by the exchange of gases at the air-sea interface.
As more carbon dioxide is emitted into the atmosphere, the concentration of carbon dioxide in the ocean increases, leading to a phenomenon called "ocean acidification".
Ocean acidification can have a number of negative impacts on marine organisms, including reduced growth rates and weakened shells or skeletons.
Thus, we can conclude this increases the amount of carbonic acid in ocean.
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when the maximum amount of solid is dissolved in a solute what kind of solution is it?
Answers
The 12g is the maximum amount of solid is dissolved in a solute, ionic solution.
What is solution ?
A steady change in the relative ratios of two or more substances up to the point at which they become homogenous when combined; this point is known as the limit of solubility.
What is solute ?
Solute refers to an object that dissolves in a solution. In fluid solutions, there is a larger concentration of solvent than solute. Salt and water are two excellent examples of substances that we use on a daily basis. Since salt dissolves in water, it serves as the solute.
Therefore, The 12g is the maximum amount of solid is dissolved in a solute, ionic solution.
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Light is emitted by atoms that have been excited by
which of the following?
Answers
11. A chemist mixed two samples together: a brown solid that melts at about 1,300°C and a colorless liquid that melts at about 20°C. She analyzed the results and found two ending substances. One of the ending substances melts at about 250°C. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples the chemist mixed together?
Answers
Diagram c to the left shows the repeating groups of atoms that make up the samples the chemist mixed together.
What is atoms?Atoms are the smallest unit of matter that make up all physical objects. Atoms are composed of three main components: protons, neutrons, and electrons. Protons and neutrons are found in the nucleus of the atom and have a positive charge, while electrons orbit the nucleus and have a negative charge. Atoms can join together to form molecules, which are the building blocks of all matter. Atoms of different elements can join together in different ways to form compounds and these compounds are the basis of all substances. Atoms are also the basis of all chemical reactions and can exist in different physical states, such as solid, liquid, or gas. Atoms can also be combined to form isotopes, which are atoms of the same element with different numbers of neutrons.
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Other MC question needed to be answered. Please.
Answers
The initial concentration is 1.8 * 10^36 M.
The stoichiometry is 2A ⇒ B
The rate of disappearance of H2O2 is 4 mol/min
It decreases adhesion and increases cohesion
Not predictable since it can be at any level.
What is the order of a decomposition reaction?In a decomposition reaction, a single reactant breaks down into two or more products. The order of a decomposition reaction depends on the rate at which the reaction occurs with respect to the concentration of the reactant.
Given that;
ln[A] = ln[A]o - kt
ln(0.0015) = ln[A]o - (0.025 * 60 * 60)
-6.5 = ln[A]o - 90
-6.5 + 90 = ln[A]o
83.5 = ln[A]o
[A]o = e^83.5
[A]o = 1.8 * 10^36 M
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Why is a different product formed at the anode when copper sulfate is electrolysed using graphite electrodes rather than copper electrodes?
Answers
Consider the Haber-Bosch process for the synthesis of ammonia from its elements.
Calculate the theoretical yield in moles NH, from the complete reaction of 15.6
grams H₂ in the presence of excess N, gas according to the following balanced
chemical equation:
ADD FACTOR
3 H₂(g) → 2 NH,(g)
N₂(g) + 3
Answers
Answer:
The theoretical yield in moles of NH3 is 5.2 moles. This is calculated by dividing the mass of H2 (15.6 g) by the molar mass of H2 (2.016 g/mol) to get the number of moles of H2 (7.76 moles). Then, using the mole ratio from the balanced equation, we can calculate the number of moles of NH3 produced (5.2 moles).
Explanation:
what features is used to compare the different groups of people in the world?
Answers
There are various parameters used to group people around the world. We can use the cost of living, place of residence, life style, culture etc. to compare different groups of people in the world.
What are features for social comparison?According to the social comparison hypothesis, people evaluate their own social and personal worth by evaluating how they stack up against others. The comparison strategies people use to assess their actions, successes, and ideas in relation to those of other people are described by Leon Festinger's comparison theory, which was first presented in 1954.
In addition to influencing how people perceive themselves, social comparison also affects how they act. Think about how social comparisons, both positive and negative, can affect how you feel about yourself. belief, certainty, drive, and attitude.
Comparing the life styles, culture, socio-economic status, language etc. are general features used to compare different group of people around the world.
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Calculate the root-mean-square (rms) in m/s for an NO2 molecule at 95°C.
Answers
The root mean square velocity of nitrogen molecules at 25°c is 515 m/s.
What is the root mean square?The square root of the mean square, or the arithmetic mean of the squares of a particular collection of numbers, is referred to as the root mean square (RMS or rms).
Root Mean Square, or RMS The d.c. current/voltage that dissipates the same quantity of power as the average power wasted by the alternating current/voltage is represented by the current/voltage of the alternating current/voltage.
One kind of mean is the root mean square. Since the squaring turns all of the numbers into non-negative numbers, it is helpful when attempting to determine the average "size" of numbers where the sign is irrelevant. Calculating a collection of integers' standard deviation using the root mean square is the most typical application.
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Determine the mass in grams of CO, that is produced by the complete reaction of
0.2038 moles of CH₁ (xylene) according to the following combustion reaction:
C_H,,(I)+ 10.5 O,(9)– 8 |CO,(g)+ 5 \H,O(g)
Answers
Taking into account the reaction stoichiometry, 71.7376 grams of CO₂ is produced by the complete reaction of 0.2038 moles of xylene.
Reaction stoichiometryIn first place, the balanced reaction is:
C₈H₁₀ + 10.5 O₂ → 8 CO₂ + 5 H₂O
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:
C₈H₁₀: 1 moleO₂: 10.5 molesCO₂: 8 molesH₂O: 2 molesThe molar mass of the compounds is:
C₈H₁₀: 106 g/moleO₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/moleBy reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
C₈H₁₀: 1 mole ×106 g/mole= 106 gramsO₂: 10.5 moles ×32 g/mole= 336 gramsCO₂: 8 moles ×44 g/mole= 352 gramsH₂O: 5 moles× 18 g/mole= 90 gramsMass of CO₂ formedIt can be applied the following rules of three: if by reaction stoichiometry 1 mole of C₈H₁₀ form 352 grams of CO₂, 0.2038 moles of C₈H₁₀ form how much mass of CO₂?
mass of CO₂= (0.2038 moles of C₈H₁₀× 352 grams of CO₂)÷1 mole of C₈H₁₀
mass of CO₂= 71.7376 grams
Finally, 71.7376 grams of CO₂ are formed.
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10
Select the correct answer.
Which property of a substance can be determined using a pH indicator?
OA. acidity
OB. boiling point
O C. density
OD. electrical conductivity
OE
Which property of a substance can be determined using a pH indicator
Answers
Answer: (A) acidity
Explanation: Acidity is a measure of how acidic a substance is. pH is a system used to measure the H+ ion concentration in a substance. Using the equation -log([H+]=pH, if given a pH value less than 7, a substance is acidic, and greater than 7 indicates basicity.
Common indicators are phenolphthalein and bromthymol blue which turn different colors depending on the acidity of the solution they're in. This color tells us nothing about the boiling point, density, or electrical conductivity.
Hope this helps!
Explain why not all sugar is bad for you give some examples of good sugars in your explanation
Answers
Answer:
Not all sugars are bad for you because there are different types of sugars that have different effects on the body.
For example, natural sugars found in fruits, vegetables, and dairy products are considered good sugars because they are accompanied by fiber, vitamins, and minerals that are beneficial for the body. These sugars are also absorbed more slowly by the body, which helps to regulate blood sugar levels and prevent spikes in insulin.
Another example of a good sugar is honey, which contains antioxidants and has antibacterial properties. It is also a natural sweetener that can be used in moderation to add flavor to foods and drinks.
On the other hand, added sugars found in processed foods and drinks are considered bad sugars because they are often high in calories and low in nutrients. These sugars can contribute to weight gain, inflammation, and other health problems when consumed in excess.
Examples of added sugars to avoid include high fructose corn syrup, table sugar, and syrups used in processed foods and drinks. It is important to read food labels and limit intake of added sugars to maintain a healthy diet.
How many protons are in 1.801 x 1021 lithium atoms?
Answers
5.403 x 10^21 protons
Step by step solved:
The atomic number of lithium is 3, which means that every lithium atom has 3 protons.
To determine the total number of protons in 1.801 x 10^21 lithium atoms, we simply need to multiply the number of atoms by the number of protons per atom:
Total number of protons = (1.801 x 10^21 atoms) x (3 protons/atom)
Total number of protons = 5.403 x 10^21 protons
Therefore, there are approximately 5.403 x 10^21 protons in 1.801 x 10^21 lithium atoms.
need help on this chemistry question please.
Answers
The theoretical yield of AlCl₃ is 28.65g and percentage yield is 33.15%.
What is yield of a reaction?
In chemistry, yield, also referred to as reaction yield, is a measure of the quantity of moles of a product formed in relation to the reactant consumed, obtained in a chemical reaction, usually expressed as a percentage.
Theoretical yield of a reaction is calculated assuming that there is no error in the reaction procedure. Percentage yield can be calculated by the formula-
%Yield = (Actual yield ÷ theoretical yield) ×100
Given,
Mass of Al(OH)₃ = 50.3g
According to reaction given,
78g Al(OH)₃ gives - 44.44g AlCl₃
1g Al(OH)₃ gives - 0.56g AlCl₃
Then, 50.3g Al(OH)₃ gives - 0.56×50.3 = 28.65g AlCl₃
%Yield = (9.5÷28.65) × 100
Therefore, the theoretical yield of AlCl₃ is 28.65g and percentage yield is 33.15%.
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Please help it's urgent. Please chemistry students can help or if you have any answers you can help me out. Thanks.
Name the following compounds.
1. KCl
2. NaCl
3. FeCl2
4. MgO
5. CuO
6. LiCl
7. PbO
8. Cul
9. NaOCl
10. SF4
Please help it's urgent. Answer only the ones you know please.
Answers
KCl = Potassium chloride
NaCl = Sodium chloride
FeCl2 = Iron (II) chloride or ferrous chloride
MgO = Magnesium oxide
CuO = Copper (II) oxide or cupric oxide
LiCl = Lithium chloride
PbO = Lead (II) oxide or plumbous oxide
CuI = Copper (I) iodide or cuprous iodide
NaOCl = Sodium hypochlorite
SF4 = Sulfur tetrafluoride
Hope this helped !
What do these two changes have in common baking cookies and using polish to remove tarnish from a silver spoon?
Answers
Answer: Both are Chemical changes.
Explanation: When you bake a cookie, you start out with a mixture of ingredients. These can include substances such as Baking Soda. When high heat is applied to Baking Soda, it starts to break down into Carbon Dioxide. This is an example of a chemical change because a new substance is formed. Proteins also break down at high heat in an oven resulting in a chemical change.
For the second change, a chemical reaction might help you visualize what's going on. 3 Ag2S(s) + 2 Al(s) ---> 6 Ag(s) + Al2S3(s) is the reaction that's occuring. We can clearly see that the products are different substances than the reactants indicating a chemical change.
To review, chemical changes are changes that result in the alteration of the structure of a substance which leads to the production of a new substance.
Hope this helps!
2.74 Give the chemical formula for each of the following ionic com- pounds: (a) sodium phosphate, (b) zinc nitrate, (c) barium bromate, (d) iron(II) perchlorate, (e) cobalt(II) hydrogen car- bonate, (f) chromium(III) acetate, (g) potassium dichromate.
Answers
Phosphate of sodium: Nitrate of zinc, Na3PO4, Zn(No3)2, bromate of barium: Perchlorate of iron (II) and ba(BrO3)2: Cobalt (II) hydrogen carbonate, Fe(ClO4)2: Co(HCO3)2.
The acid that results from the ion acetate being formed is known as CH3COO?Hydrogen acetate, also known as acetic acid, is the simplest of these, consisting of its salts, esters, and the polyatomic anion CH3CO2, or CH3COO.
How is potassium dichromate K2Cr2O7 made?Potassium dichromate is the chemical name of an inorganic chemical reagent known as K2Cr2O7. Dipotassium bichromate and potassium bichromate are other names for it. It is a bright reddish-orange crystalline ionic solid. It has no odor and is insoluble in alcohol and acetone, but it dissolves in water.
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Which of the following would most likely be a result of switching from geothermal energy to biomass energy as the primary energy source for a home? (5 points)
Amount of trash would increase in landfills
Combustion increases greenhouse gases
Deforestation would give way to land for crops
Fossil fuel consumption would be eliminated
Answers
The likely statement that would be a result of switching from geothermal energy to biomass energy as the primary energy source for a home is
Deforestation would give way to land for crops.
Option C is correct.
What is Deforestation?Deforestation is described as the removal of a forest or stand of trees from land that is then converted to non-forest use.
Switching from geothermal energy to biomass energy would result to increase the demand for organic materials, leading to deforestation and a loss of habitat for wildlife.
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ANSWER ALL THE FOLLOWING
Answers
One of the way of writing the chemical formula of an ionic compound is to use crisscross method. In this method, the numerical value of each of the ion charges is crossed over to become the subscript of the other ion.
What is a chemical formula?The symbolic representation of the composition of a compound is given by the chemical formula of the compound. In a chemical formula an anion is written on the right side whereas a cation is written on the left side.
1 Question answers:
a. Cr₂O₃
b. (NH₄)₃PO₄
c. CaSO₄
2 Question answers:
a. Iron (II) Chloride
b. Barium hydroxide
c. Lithium cyanide
d. Lead (II) Chloride
3 Question answers:
a. Sulfur tetrafluoride
b. Chloryl perchlorate
c. Dinitrogen trioxide
d. Phosphorous pentoxide
4 Question answers:
a. C₂H₂
b. C₂H₄
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Albert places a thermometer in hot water during a lab and the column of fluid inside the thermometer rises to 90 degrees Celsius. As the student takes measurements of the temperature, it drops until it reaches 24 degrees Celsius, room temperature. When the data is graphed, Albert notices that the initial decrease in temperature is more rapid. How should he explain his observation?
Question options:
Water has a low specific heat so it rapidly loses heat to its surroundings.
The decrease should have been constant, so the thermometer was probably defective.
As the water and air seek to reach the same temperature, the water absorbs cold from the surrounding air.
The difference between the water's temperature and that of the classroom was greater in the first few minutes so the water lost heat more rapidly.
Answers
The water lost heat more quickly because the temperature difference between the classroom and the water was greater in the first few minutes.
When a thermometer is immersed in hot water, why does a column of mercury initially descend and then rise?When a mercury thermometer is immersed in hot water, the bulb initially absorbs heat from the outside and expands, causing the mercury column in the thermometer to initially descend slightly. Mercury expands as heat is transferred to it later.
Would the column's mercury level rise or fall in response to an increase in air pressure?This is because mercury is pushed up a tube as a column of air above the barometer presses on a mercury-filled dish. The mercury in the tube rises more rapidly in response to the greater force of the downward push.
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Which of the following substances is insoluble in water, according to these solubility rules?
A) Sodium chloride (NaCl)
B) Calcium hydroxide (Ca(OH)2)
C) Potassium nitrate (KNO3)
D) Silver chloride (AgCl)
Which of the following ions is soluble in water when paired with according to the solubility rules chart?
C) Chloride (Cl-)
B) Sulfate
D) Hydroxide (OH-)
A) Carbonate
Question 12 (1.25 points)
Which of the following combinations will result in a precipitate, according to solubility rules?
A) Sodium nitrate (Na2CrO4) and barium chloride (BaCl2)
B) Ammonium chloride (NH4Cl) and sodium hydroxide (NaOH)
C) Calcium sulfate (CaSO4) and sodium carbonate (Na2CO3)
D) Potassium iodide (KI) and silver nitrate (AgNO3)
Question 13 (1.25 points)
Which of the following statements is true about dilute and concentrated solutions?
A) Dilute solutions have a higher solvent-to-solute ratio than concentrated solutions.
B) Concentrated solutions contain more solute than dilute solutions.
C) Dilute solutions contain more solute than concentrated solutions.
D) Concentrated solutions have a higher solvent-to-solute ratio than dilute solutions.
Question 14 (1.25 points)
What volume of a 0.500 M sodium chloride solution is required to make 500. mL of a 0.100 M sodium chloride solution?
A) 100 L
B) 0.100 ml
C) 0.100 L
D) 1 L
Question 15 (1.25 points)
A student has a 0.500 M solution of hydrochloric acid (HCl) that is too concentrated for an experiment. The student needs to dilute the solution to 0.100 M. If the student needs 250 mL of the diluted solution, how much of the original solution should be used?
A) 250 ml
B) 50.0 ml
C) 125 ml
D) 500 ml
Answers
Answer:
Question 10: Which substance is insoluble in water?
Answer: Silver chloride (AgCl).
Question 11: Which ion is soluble in water?
Answer: Chloride (Cl-).
Question 12: Which combination will form a precipitate (solid) according to solubility rules?
Answer: Calcium sulfate (CaSO4) and sodium carbonate (Na2CO3).
Question 13: Which statement is true about dilute and concentrated solutions?
Answer: Concentrated solutions have more solute than dilute solutions.
Question 14: How much of a 0.500 M sodium chloride solution is needed to make 500 mL of a 0.100 M solution?
Answer: 0.100 L (100 mL).
Question 15: How much of a 0.500 M hydrochloric acid solution should be used to make 250 mL of a 0.100 M solution?
Answer: 50.0 mL.
Explanation:
What is the mass of 2.25 moles of sulfuric acid (H2 SO4)?
Answers
Answer:
The molar mass of sulfuric acid (H2SO4) can be calculated by adding the atomic masses of its constituent atoms:
Molar mass of H2SO4 = 2(1.008 g/mol) + 1(32.06 g/mol) + 4(15.99 g/mol) = 98.08 g/mol
Therefore, the mass of 2.25 moles of H2SO4 is:
mass = number of moles x molar mass
mass = 2.25 moles x 98.08 g/mol = 220.68 g
So, the mass of 2.25 moles of sulfuric acid is 220.68 grams.
Can you help me with this please?
Answers
Precipitation reactions;
2KCl + Pb(NO3)2 ----> PbCl2 + 2KNO3
Ba(NO3)2 + K2SO4 -----> BaSO4 + 2KNO3
Hg2(C2H3O2)2 + 2NaCl -----> Hg2Cl2 + 2NaC2H3O2
Non precipitation reactions
C + O2 ---> CO2
HBr + KOH ----> KBr + H2O
HCl + KOH -----> KCl + H2O
H2O2 + NaOBr ----> NaBr + H2O + O2
What is a precipitation reaction?A precipitation reaction is a type of chemical reaction that occurs when two aqueous solutions (solutions dissolved in water) are mixed together and form an insoluble solid called a precipitate.
The reaction is characterized by the exchange of ions between the two aqueous solutions, which leads to the formation of the insoluble solid.
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What mass of potassium nitrate is needed to generate 239.0 L of gas, composed of 105.0 L of N2 and 134.0 L of O2 at 0.920 atm and 287 K, using these two reactions?
Answers
Mass of potassium nitrate is needed to generate 215.0 L of gas, composed of 111.0 L of N₂ and 104.0 L of O₂ at 0.920 atm and 291 K, using these two reactions is 1186.75 g.
What is the purpose of potassium nitrate?Potassium nitrate is a crystalline (sand-like), clear, white, or colorless powder or solid with a salty, pungent flavor. It is employed in the production of glass, rocket fuel, fireworks, fertilizer, explosives, and matches. Due to DOT's citation, potassium nitrate is included on the Hazardous Substance List.
The reactions are :
2KNO₃ ---> 2KNO₂ + O₂
4KNO₂ ----> 2K₂O + 3O₂ + 2N₂
Therefore,
4KNO₃ ----> 2K₂O + 5O₂ + 2N₂
using the formula:
PV = nRT
moles of N₂ = PV / RT
P = 0.920 atm
T =287 K
R = 0.082 Latm/mol/k
moles of N₂ = 4.279 mol
moles of O₂ = (0.92 × 134) / 0.082 × 287 = 123.28 / 23.534
= 5.24 mol
from the equation .
moles of potassium nitrate to produce nitrogen = 2 × 4.279
= 8.55 mol
moles of nitrate tp produce oxygen = (4 / 5) × 4
= 3.2 mol
total moles of nitrate = 8.55 mol + 3.2 mol
= 11.75 mol
mass of potassium nitrate = number of moles × molar mass
= 11.75 × 101
= 1186.75 g
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A reaction produces 0.829 moles of H20. How many molecules of H2O are produced?
Answers
The molecules of H2O that are produced are: 4.98 × 10²³ molecules of H2O
What is meant by a reaction?Process in which one or more substances are converted to one or more different products is called a chemical reaction.
To calculate the number of molecules of H2O produced, we can use the Avogadro's number, which is equal to 6.022 × 10²³ molecules per mole of substance.
number of molecules = moles of substance × Avogadro's number
number of molecules = 0.829 moles × 6.022 × 10²³molecules/mol
number of molecules = 4.98 × 10²³molecules
Therefore, approximately 4.98 × 10²³ molecules of H2O are produced.
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BASED ON TYPES OF CHEMICAL REACTIONS. CAN SOMEONE HELP WITH THIS QUESTION?✨
Answers
The following chemical equation can represent the reaction:
Mg (s) + FeSO4 (aq) → MgSO4 (aq) + Fe (s)
In this reaction, the magnesium metal (Mg) replaces the iron (Fe) in the iron (II) sulfate (FeSO4) solution to form magnesium sulfate (MgSO4) and elemental iron (Fe). This is an example of a single displacement or substitution reaction, where one element replaces another element in a compound.
What is a catalyst?A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur. Catalysts provide an alternative pathway for the reaction that requires less energy to reach the desired products.
Give one example of a catalyst.Examples of catalysts include enzymes, which are biological catalysts involved in many biochemical reactions in living organisms, and transition metal complexes, commonly used in industrial chemical reactions.
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The mass of the beaker and watch glass: 57.880g
the mass of the beaker + watch glass +sample: 59.993g
The mass of the beaker + watch glass+ sample after first heating : 59.710
Answers
Mass of Sample = 59.993 - 57.880 = 2.113 g
Mass of Sample after 1st Heating = 59.710 - 57.880 = 1.83 g
Mass of Water Removed = 2.113 - 1.83 = 0.283 g
Mass of Sample after 2nd Heating = 59.7 - 57.88 = 1.82 g
Mass of Water Removed = 1.83 - 1.82 = 0.01 g
Total Mass of Water lost = 0.293 g
Moles of Water lost = 0.293 / 18 = 0.01628
Mass of Anhydrate = 1.82 g
Now check the molar mass of each hydrate:
CuSO4.5H2O = 159.61 g/mol
ZnSO4.7H2O = 287.58 g/mol
BaCl2.2H2O = 244.26 g/mol
MgSO4.7H2O = 246.47 g/mol
Now, Check the mole ratio of Anhydrous Salt : Water to get the required stoichiometric coefficient of H2O.
For BaCl2.2H2O,
Answer: BaCl2.2H2O
What is anhydrous salt?
An anhydrous salt is a chemical compound that does not contain water molecules as part of its crystal structure. It is the opposite of a hydrated salt, which contains a specific number of water molecules within its crystal structure. Anhydrous salts are usually formed by heating hydrated salts to a high temperature to drive off the water molecules. Anhydrous salts are often used in chemical reactions, as they can react more efficiently than hydrated salts due to their greater purity and stability. Some common examples of anhydrous salts include anhydrous sodium sulfate, anhydrous calcium chloride, and anhydrous magnesium sulfate.To know more about anhydrous salt, click the link given below:
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PLS HELP ASAPPP !!! WILL GIVE BRAINLIEST
Answers

NUMBER 4, SOMEONE EXPLAIN TO ME HOW TO SOLVE THIS
Answers
The limiting reagent is chlorine.
The amount of excess reagent that will remain is 0.918 g of Al.
Stoichiometric problemThe balanced chemical equation for the reaction is:
2Al + 3Cl2 → 2AlCl3
The molar mass of Al is 26.98 g/mol and the molar mass of Cl2 is 70.90 g/mol. We can use these values to calculate the number of moles of each reactant:
moles of Al = 2.70 g / 26.98 g/mol = 0.100 mol
moles of Cl2 = 4.05 g / 70.90 g/mol = 0.057 mol
According to the balanced equation, 2 moles of Al react with 3 moles of Cl2 to produce 2 moles of AlCl3. Therefore, the amount of AlCl3 produced by each reactant is:
Al: (0.100 mol Al) x (2 mol AlCl3 / 2 mol Al) = 0.100 mol AlCl3
Cl2: (0.057 mol Cl2) x (2 mol AlCl3 / 3 mol Cl2) = 0.038 mol AlCl3
Since Cl2 produces less AlCl3, it is the limiting reagent. The amount of excess Al can be calculated as follows:
moles of excess Al = moles of Al - (moles of Cl2 x (2 mol Al / 3 mol Cl2))
moles of excess Al = 0.100 mol - (0.057 mol x (2/3))
moles of excess Al = 0.034 mol
The mass of excess Al can then be calculated using its molar mass:
mass of excess Al = moles of excess Al x molar mass of Al
mass of excess Al = 0.034 mol x 26.98 g/mol
mass of excess Al = 0.918 g
Therefore, 0.918 g of Al remains unreacted.
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is gravimetric or volumetric filtration faster
Answers
Gravimetric and volumetric filtration are two different methods for measuring the amount of material filtered through a membrane or filter. Gravimetric filtration measures the weight of the material captured by the filter, while volumetric filtration measures the volume of the filtered material.
What is volumetric filtration?Volumetric filtration is a method for measuring the volume of a fluid passing through a filter or membrane. This method involves measuring the volume of fluid filtered through a filter over a certain period.
What is the use of volumetric filtration?Volumetric filtration can be used for various applications, including water and wastewater treatment, food and beverage processing, and pharmaceutical manufacturing. It is a fast and efficient method for processing large volumes of fluid, and it can be automated for even greater efficiency.
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