Answer: it feels good, because that person cares about you
Explanation:
. What is the mole ratio of Na₂CO3 to Al₂(CO3)3?
The mole ratio of Na₂CO3 to Al₂(CO3)3 can be determined by comparing the coefficients in the balanced chemical equation for the reaction involving these two compounds.
What is mole ratio?Mole ratio is a term used in chemistry to describe the relationship between the amount of two or more substances in a chemical reaction. It is the ratio of the number of moles of one substance to the number of moles of another substance involved in the reaction.
A mole is a unit of measurement used in chemistry to quantify the amount of a substance. One mole of any substance contains Avogadro's number of particles, which is approximately 6.02 x 10^23 particles. Therefore, a mole ratio describes the relative amounts of substances in terms of the number of moles.
The mole ratio of Na₂CO3 to Al₂(CO3)3 can be determined by comparing the coefficients in the balanced chemical equation for the reaction involving these two compounds.
However, since a reaction is not specified, I can't give you an exact answer.
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Choose the best answer.
Determine if the following reaction is a redox reaction; if it is, select the correct overall oxidation -reduction reaction. (You may need to use Tables A-1, A-2, A-3, and A-4 in your CRG for oxidation numbers.)
C(s) + 02(g) - CO2(g)
It is a redox reaction since the oxidation number of carbon was increased from zero to four and that of oxygen was decreased from zero to -2.
What is a redox reaction?A redox reaction (short for reduction-oxidation reaction) is a type of chemical reaction in which there is a transfer of electrons between two chemical species. In a redox reaction, one reactant undergoes oxidation (loses electrons) while the other undergoes reduction (gains electrons).
Oxidation refers to the loss of electrons, while reduction refers to the gain of electrons. The substance that undergoes oxidation is called the reducing agent, as it causes the other reactant to be reduced.
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please separate them so I can put it in the right box AND
PLEASE DON'T GET IT FROM WEBSITE MAKE UP YOUR OWN
if it's right Phases of Matter—Comic Strip Template
Instructions: Create a comic strip detailing the adventure of your character as the character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. Place drawings inside the boxes and written content on the lines below each box.
Your presentation must include the following:
title and introduction of your character, including what substance it is made of
source of thermal energy your character encountered (conduction, convection, and/or radiation)
detailed description and/or diagram of the particle transformation from solid to liquid phase
detailed description and/or diagram of the particle transformation from liquid to gas phase
Title of your comic strip: __________________________
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will make brainiest :)
Title of your comic strip: Adventures of Ice Cube.
So, the title will be "Adventure of Ice Cube".
Define the term title.
The term title refers to the name or heading given to a book, article, movie, piece of music, or other creative work that identifies it and distinguishes it from other works. It can also refer to a position or designation given to a person, such as a job title or academic title.
Box 1:
Introduction of character: Meet Ice Cube, a small, square-shaped piece of ice made of water molecules. Ice Cube was comfortably sitting in a glass of water until he was exposed to thermal energy.
Caption: This is Ice Cube. He is made of water molecules.
Box 2:
Source of thermal energy: A warm hand holding the glass of water.
Caption: Suddenly, a warm hand holds the glass of water.
Box 3:
Solid to liquid phase: Ice Cube starts to melt and becomes a liquid as it absorbs thermal energy from the warm hand.
Caption: Ice Cube starts to melt as he absorbs thermal energy from the warm hand.
Box 4:
Liquid to gas phase: Ice Cube continues to absorb thermal energy, and as a result, it transforms into water vapor and evaporates into the air.
Caption: As Ice Cube continues to absorb thermal energy, it transforms into water vapor and evaporates into the air.
Box 5:
Conclusion: Ice Cube's adventure comes to an end, but he realizes that he is never really gone, as his water molecules will always be a part of the water cycle.
Caption: The end. Ice Cube is gone, but his water molecules will always be a part of the water cycle.
Box 6:
Additional Information: Show the water cycle and explain how Ice Cube's water molecules can be a part of it.
Caption: Ice Cube's water molecules will eventually come together with other water molecules to form clouds and rain. Then, they will flow into rivers and oceans, and the cycle starts again.
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How many moles of oxygen molecules (O2) are in 63.996 g of o2
Answer:
1.99875 or 2mols
Explanation:
use the formula moles = mass/molar mass where; the molar mass = mass number of an element
4Al + 3O2 -> 2Al203
How many moles of aluminum oxide can be produced from 24 grams of oxygen gas?
Answer: 0.5 moles of aluminum oxide can be produced from 24 grams of oxygen gas.
Explanation:
balanced chemical equation for the reaction between aluminum and oxygen is:
4Al + 3O2 → 2Al2O3
moles of O2 = mass / molar mass = 24 g / 32 g/mol = 0.75 mol
moles of Al2O3 = (2/3) * moles of O2 = (2/3) * 0.75 mol = 0.5 mol
Therefore, 0.5 moles of aluminum oxide can be produced from 24 grams of oxygen gas.
How many moles of water will be produced from the complete combustion of 3 moles of C3H8?
If you have 3 moles of carbon dioxide and 4 moles of water that is being produced by a combustion of propane. That would make your answer be 4 moles
Hope this helps :)
HELP PLEASE!!!
How many liters of butane (C4 H10) will be needed to produce 1.55L H2O at (STP- Standard temperature and pressure) ?
Explanation:
Refer to pic..........
Answer the basic 5W questions about the American Heart Association study of kids' "screen-time" in Montreal, Canada
Answer: Who conducted the study?
The study was conducted by the American Heart Association.
What was the topic of the study?
The topic of the study was kids' "screen-time" and its impact on their health.
Where was the study conducted?
The study was conducted in Montreal, Canada.
When was the study conducted?
The specific timeframe of the study is not provided in the question, so it is unclear when the study was conducted.
Why was the study conducted?
The study was conducted to examine the relationship between kids' "screen-time" and their health, specifically looking at the effects on blood vessel health and arterial stiffness. The study aimed to provide more information about the potential negative impacts of excessive screen time on children's health, and to raise awareness about the importance of limiting screen time in order to promote healthier lifestyles for children.
Explanation:
1. Mr. Bryan's pet turtle walks 280 feet at a speed of 4ft/min. How long does his walk take? Do not forget to write the word "minutes" after your calculation.
type answer
2.Adrian's mom drove 3 hours to get to San Antonio at a speed of 65 miles per hour (mph). How far away is San Antonio? Do not forget your units- write the word "miles" at the end of your calculation.
Type answer
Answer: 1. is 70 minutes
2. is 195
Explanation: I took the test and I got a B but for sure it's this
It would take Mr. Bryan's pet turtle 70 minutes to walk 280 feet at a speed of 4 feet per minute.
To calculate the time it takes for Mr. Bryan's pet turtle to walk 280 feet at a speed of 4 feet per minute, we can use the formula:
time = distance / speed
Plugging in the given values, we get:
time = 280 feet / 4 ft/min = 70 minutes
Therefore, it would take Mr. Bryan's pet turtle 70 minutes to walk 280 feet at a speed of 4 feet per minute.
The second one is:
According to the given data:
distance = speed x time
where speed is given as 65 miles per hour (mph) and time is given as 3 hours.
Plugging in these values, we get:
distance = 65 mph x 3 hours = 195 miles
Therefore, San Antonio is 195 miles away from Adrian's mom.
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Looking at the solubility curve above for KClO3, at 30 degrees Celsius how many grams will dissolve to make a saturated solution?
Answer:
This is confused because they don't have choices
How do you think a magnet can causes something to move?
Answer: It's magnetic field.
Explanation: Its magnetic field causes any metal to be attracted to it. The strength of the attraction is based on how strong the field is.
Answer:
It's the weight due to gravity that it can cause something to move.
Explanation:
It is the process where strong and spatially varying magnetic fields exert forces on an object in such a way that is sufficient to counteract its weight due to gravity, allowing the object to 'float' off of the ground.
A sample of butane gas, C4H10, was collected over water at 28.0 °C and 754.4 torr. The wet gas volume is 1.00 L. What will be the volume of dry butane at 824.1 torr and 55.9 °C?
At 824.1 torr + 55.9°C, dry butane has a of 0.937 L. The basic formula for size is length, breadth, and height, as volume opposed to length, width, and height for the surface of a rectangular shape.
What volume do you refer to?Any three-dimensional solid's volume is the area it takes up. The shapes of these solids include cubes, cuboids, cones, cylinders, and spheres. Forms come in a wide range of volumes.
There are three methods for measuring volume.Volumes will be calculated using three different techniques: geometrically (measured lengths); water displace; and pycnometry, to demonstrate the effects of precision on data.
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Which hydrocarbon is a member of the alkene series?
A) C2H
B) C3H6
C) C4H10
D) C5H12
What volume of a 0.500 M sodium chloride solution is required to make 500. mL of
a 0.100 M sodium chloride solution?
1L
100 L
0.100 L
0.100 ml
Explanation:
Refer to pic..... .. .....
Given the volume of the 0.500 M sodium chloride solution is 500 mL. Then, the volume of 0.100 M sodium chloride solution is 2500 ml.
What is molarity ?Molarity of a solution is the ratio of its number of moles of solute to the volume of solution in liters. It is the common term to express the concentration of a solution.
The product of molarity and volume then being the number of moles of solute in the solution. Let V1 and M1 be the volume of molarity of a solution and V2 and M2 be the volume and concentration of the diluted solution.
then,
M1 V1 = M2 V2
Given,
M1 = 0.500 M
V1 = 500 mL
M2 = 0.100 M
then V2 = M1 V1/ M2
V2 = 0.500 M × 500 ml /0.100 M
= 2500 ml.
Therefore, the volume of the diluted solution is 2500 ml.
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NEED HELP ASAP!! 100 POINTS!!
A liter of milk has a [H+] of about 2.51 × 10–7. (You may prefer to think of the hydronium ion concentration, [H3O+], as 2.51 × 10–7.) Use the formula for the calculation of pH provided and show each step as you calculate the pH of milk. In order to get full points you must show all the steps you take.
I need the answer and all the steps.
A liter of milk has a [H+] of about 2.51 × 10–7. (You may prefer to think of the hydronium ion concentration, [H3O+], as 2.51 × 10–7.) Use the formula for the calculation of pH provided and show each step as you calculate the pH of milk. In order to get full points you must show all the steps you take.
ANSWER:
[H+] = [H3O+] = 2.52 * 10^-7M
pH = -log [H+]
pH = -log [2.51*10^-7]
pH = -[-6.60]
pH = 6.60
Hope this helps :)
Can you help me put this in order please i know henning Bramd go first but i need this quick
The order of the scientists in terms of when they lived and were prominent is :
Robert BoyleHennig BrandJohn NewlandsJ.J. ThomsonMarie CurieLothar MeyerDmitri MendeleevSir William RamsayErnest RutherfordGlenn SeaborgWhat are some details of the scientists ?Robert Boyle was an Irish natural philosopher and chemist who is best known for his contributions to the field of modern chemistry. Hennig Brand was a German alchemist who is credited with discovering the element phosphorus in 1669.
J.J. Thomson was British physicist who is best known for his discovery of the electron in 1897. Marie Curie was a Polish-born French physicist and chemist who is best known for her pioneering work on radioactivity.
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The lattice structure of ionic solid consists of positive ions and negative ions held together by ionic bonds. Describe the lattice structure of a molecular solid Ionic compound?
The lattice structure of a molecular solid Ionic compound are mentioned below.
What is lattice structure?
An asymmetrical three-dimensional structural arrangement of ions, atoms, and molecules to create a unit cell is called a lattice or a crystal lattice. The kind of crystal lattice is determined by a unit cell's substantial and distinctive geometrical shape. Every ion, atom, or molecule in a crystal structure's unit cell represents a point in a three-dimensional space.
What is ionic compound ?
An ion with a positive charge is a cation, whereas one with a negative charge is an anion.
Therefore, The lattice structure of a molecular solid Ionic compound are mentioned above.
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Calculate the moles of HCl remaining in each flask after the reaction with the unknown carbonate
0.1 moles HCl - 0.05 moles HCl = 0.05 moles HCl
Let's assume that you added 0.1 moles of HCl to each flask and that the amount of the unknown carbonate and NaOH used in each flask is the same. Let's also assume that the limiting reagent for each reaction is the unknown carbonate.
Balanced chemical equation for the reaction between the carbonate and HCl:
M2CO3 + 2HCl → 2MCl + CO2 + H2O
The limiting reagent is the unknown carbonate because it is present in a lower quantity than the HCl.
The number of moles of the limiting reagent that reacted is equal to the number of moles of HCl added, which is 0.1 moles.
The number of moles of the limiting reagent remaining is equal to the initial number of moles of the limiting reagent minus the number of moles of the limiting reagent that reacted. Since we do not know the initial number of moles of the unknown carbonate, we cannot calculate this value.
The stoichiometry of the balanced chemical equation tells us that 2 moles of HCl react with 1 mole of M2CO3. Therefore, the number of moles of HCl that reacted with the unknown carbonate is:
0.1 moles HCl x (1 mole M2CO3 / 2 moles HCl) = 0.05 moles M2CO3
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Question:
Calculate the moles of HCl remaining in each flask after the reaction with the unknown carbonate, One is the reaction between M2CO3 and HCl .The second reaction is between NaOH and HCl .They are given below . M2CO3(aq) + 2HC
How many molecules of hydrogen are required to react with 65 molecules of nitrogen?
Explanation:
Refer to pic...........
A sealed flask contains
3.6 atm H2 gas and
1.8 atm O2 gas.
What is the total pressure in the
flask in atm?
Total Pressure, atm
Considering the Dalton's partial pressure, the total pressure in the flask is 5.4 atm.
Definition of Dalton's partial pressureThe pressure exerted by a particular gas in a mixture is known as its partial pressure.
Dalton establishes that, at a stable temperature, the total pressure of a mixture of gases that do not chemically react with each other is equal to the sum of the partial pressures that each of its components would exert:
[tex]P_{T}[/tex]=P₁ + P₂ + ... + Pₙ
where n is the amount of gases present in the mixture.
This relationship is due to the assumption that there are no attractive forces between the gases.
Total pressure in the flaskIn this case , you know:
[tex]P_{H_{2} }[/tex]= 3.6 atm[tex]P_{O_{2} }[/tex]= 1.8 atmThe total pressure in the flask is calculated as:
[tex]P_{T}[/tex]=[tex]P_{H_{2} }[/tex] + [tex]P_{O_{2} }[/tex]
Substituting the corresponding values:
[tex]P_{T}[/tex]=3.6 atm + 1.8 atm
Solving:
[tex]P_{T}[/tex]=5.4 atm
Finally, the total pressure is 5.4 atm.
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Which type of bond is sodium bromide
Answer: Ionic bonding
Explanation:
metal + non metal = ionic bond
Sodium = metal
Bromine = nonmetal
You have sweetened iced tea with sugar, and ice cubes are present, How many phases are present?
The number of phases present is two.
Phases present in a systemThere are two phases present in sweetened iced tea with sugar and ice cubes. The first phase is the liquid phase of the tea, which contains water, sugar, and other dissolved substances.
The second phase is the solid phase of ice cubes, which contains solid water molecules. These two phases are in contact with each other, and the sugar molecules in the liquid phase are dissolved in the water molecules.
The ice cubes, being a solid, do not dissolve in the liquid phase but coexist with it in the same container.
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what is the percent composition of salicylic acid?
The percent composition of salicylic acid is C7H6O3, or 60.87%C, 4.4%H, and 34.75%O
MgCl2 is electrolyzed to produce Mg and Cl2. 1311 g of MgCl2 decomposed, what is the percent yield for this reaction if 246.43 g of magnesium are recovered ?
PLEASE HELP
***write a balanced equation
The percent yield of MgCl2 is calculated as follows: (35.8 g/45.56 g) * 100% = 78.58% per mass. The actual yield od MgCl2 is 35.8 g.
MgCl2 is it a salt?The chemical formula of magnesium chloride, or MgCl2, is one magnesium & two chloride ions. It is a salt (compound). MgCl2(H2O)x is the formula for its different hydrates. As an alloying agent and for catharsis.
MgCl2 - Is it a gas?MgCl2, a solid white substance. The direct mixing of dry chlorine and magnesium results in the unknown hydrate (hexagon shaped; r.d. 2.32; p.p.m. 714°C; b.p. 1412°C): Mg(s)+Cl2(g) = MgCl2 (s) As a component of carnallite (KCl), the substance also naturally exists.
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Energy in Chemical Reactions II: Reflect
Write a reflection about your learning in this unit. Your reflection should be at least three sentences. Use the following sentence starters as a guide.
- I feel confident about modeling how the energy in a reaction will change, because…
- To try to make sure to consider all of the bonds involved in a change from reactants to products, one strategy I used was…
- If I am not sure about the bond, energies and potential energies in a reaction, one strategy, I can use is…
- If I am not sure about how the energy moves between the system and the surroundings in a reaction on strategy, I can use it…
PLEASE HELP ME I NEED THIS ASAPP!!!!
I feel confident about modeling how the energy in a reaction will change, because this unit provided me with the information necessary to determine the type. With this knowledge, I can now interrelate with other properties and believe that this new ability will assist in future units as well. This unit has encouraged a deeper understanding of the world and its guiding principles.
(HOPE THIS HELPS <3)
The NH3 synthesis in Haber's process is an exothermic reaction it should be favoured at low temperature but optimum temperature is 400 degree Why?
For the below mentioned reason, Haber's method operates at the ideal temperature of 450C:
ReasonBy adjusting the temperature or pressure, Haber's process is a reversible process that can alter the ammonia production.With rising temperatures, there is a reduction in ammonia production. Only at temperatures between 450 and 500 degrees Celsius can an ammonia production be substantial.A lengthy process would be required to produce ammonia if the temperature was too low. In order to keep the rate of reaction high, 450°C is maintained.Due to the temperature, pressure, and hot iron catalyst being kept in good condition, ammonia production is excellent. Because nitrogen and hydrogen are recycled, the reactants are only very minimally wasted.N2 (g) + 3H2 (g) 450°C–500°C2NH3 (g).For more information on Haber's process kindly visit to
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21 The diagram shows an experiment. A B blue litmus paper D aqueous ammonium chloride What happens to the pieces of litmus paper? + aqueous sodium hydroxide blue litmus paper changes colour changes colour no colour change no colour change SHIRED heat red litmus paper changes colour no colour change changes colour no colour change red litmus paper
Three is no change in the blue litmus but the red litmus change color. This is because the ammonia turns red litmus blue due to ammonia.
What is the reaction of ammonium chloride and sodium hydroxide?When ammonium chloride and sodium hydroxide are mixed, they undergo a neutralization reaction to form ammonium hydroxide and sodium chloride. The chemical equation for this reaction is:
NH4Cl + NaOH → NH4OH + NaCl
In this equation, NH4Cl represents ammonium chloride, NaOH represents sodium hydroxide, NH4OH represents ammonium hydroxide, and NaCl represents sodium chloride.
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4. In an experiment, 170.9 g of C_{2}*H_{4} was reacted with 52.75L of , 64.1 g of C*O_{2} is produced .What is the limiting reagent? ) What is the percent yield of this reaction?
The reagent which is completely consumed in a reaction and thereby limits how much product can be formed is called the limiting reagent. Here the limiting reagent is O₂.
What is percent yield?The quantity of the product which is actually made compared with the maximum calculated yield is defined as the percent yield. The percent yield is the ratio of the actual yield to the theoretical yield.
% Yield = Actual yield / Theoretical yield × 100
The number of moles (n) = Given mass / Molar mass
'n' of C₂H₄ = 170.9 / 28.05 = 6.09 mol
'n' of O₂ = 64.1 / 31.9 = 1.65 mol
So O₂ is the limiting reactant.
Theoretical yield of CO₂ is:
170.9 × 1 mol / 28 g × 2 mol / 1 × 44/1 = 537.1 g CO₂
%Yield = 64.1 / 537.1 × 100 = 11.93 %
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Your question is complete most probably your full question was:
In an experiment, 170.9 g of C_{2}*H_{4} was reacted with 52.75g of O₂, 64.1 g of C*O_{2} is produced .What is the limiting reagent? ) What is the percent yield of this reaction?
What type of change is making popcorn and why?
Answer:The answer is physical change.
Explanation: The reason for this is because when popcorn is in its original state/form it is inside of a tear like shell and then when it changes it is an odd shaped peice if popped corn. Simple way to know is its physicle apperance changes.
START
What is the
mass of 2.75
moles of CO₂?
The mass of 2.75 moles of CO2 is approximately 121.03 grams.
What is the mass of 2.75 moles of CO₂?To calculate the mass of 2.75 moles of CO2, we need to use the molar mass of CO2.
The molar mass of CO2 is approximately 44.01 g/mol (12.01 g/mol for carbon + 2x 16.00 g/mol for oxygen).
To calculate the mass of 2.75 moles of CO2, we can use the following formula:
mass = moles x molar mass
Substituting the given values, we get:
mass = 2.75 moles x 44.01 g/mol
mass = 121.0275 g
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