1) A compound is found to have (by mass) 48.38% carbon, 8.12% hydrogen and the rest oxygen. What is its empirical formula?

Q: 1. Explain what the functions of the clay triangle and wire gauze are for an apparatus? (In 2…

A: Function of clay traingle = A clay traingle is used to hold the dishes and crucibles when they are…

Q: Each sketch below shows three objects with an electric charge. In each case, decide whether there is…

A: Direction of green ring object is to be determined in each sketch.

Q: s that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze…

A: For the analysis of Cu in biological samples, both Atomic Absorption Spectrophotometer (AAS) and…

Q: w Lewis structures

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Q: Solve for u. 14-2=121/12 3 Simplify your answer as much as possible. U= 010

A: ->For solving equation first of all unknown terms come to one side .

Q: Find k for the following equation: A + 3B ⇋ C + 2D At equilibrium A = 0.82 M, B = 0.14M, C = 0.62…

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Q: Fermentation is an important chemical reaction both in bread baking and in the production of…

A: CO2 concentration can be increased in the above mentioned reaction if we decrease the concentration…

Q: 1, a)Write the sum of the coefficients of the balanced chemical equation for the complete…

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Q: In Beer's Law, when the absorbance of a solution is 0, this means that  a. all of the incident…

A: The relationship between intensities and absorbance is given as shown below. A=logI0I Here, A is the…

Q: You determine the Mg concentration of a water sample using atomic absorption spectroscopy (AAS). The…

A: On dilution, the concentration of the solution decreases. The product of molarity and volume gives…

Q: Assume that you have isolated 1.500 grams of benzoin from Step 1 of the Dilantin experiment. The…

A: Given: mass of benzoin = 1.500 g molar mass of benzoin = 212.25 g/mol molar mass of ammonium nitrate…

Q: During an investigation, temperature when the s flask. What is the most likely r A portion the s A…

A: Answer - option C) the combined substances chemically reacted.

Q: 6. Sodium sulfate and magnesium sulfate in their anhydrous state are capable of absorbing 10 and 7…

A: Given that, sodium sulfate and magnesium sulfate absorbs 10 and 7 water molecules in their…

Q: Why do you need to study chemistry? How is it applicable to your course which is Criminology? In ten…

A: Chemistry is the branch of science , in which we study about microscopic particles like electron ,…

Q: Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical…

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Q: Compare the-chemical reactivity of calcium and magnesium. Explain the red litmus paper result. Can…

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Q: A sample is dissolved in water and analyzed using spectrophotometry. The sample shows an absorbance…

A: Please find your solution below : Spectrophotometry is a spectroscopical method used to measure the…

Q: The concentration of many colorful solutions can be determined by the amount of light absorbed by…

A: As the absorbance and concentration are in linear equation  then the equation will be y= mx+ C…

Q: 3. [Part 1] Complete the table for your assigned material which is Styrofoam Block Behavior Mass…

A: Density is defined as the measure of mass per unit volume. The symbol most often used for density is…

Q: ach sketch below shows three objects with an electric charge. In each case, decide whether there is…

A: Electric charge can be positive or negative. In chemistry, electrons carry the negative charge while…

Q: A weather balloon at ground level where the pressure is 725 mm Hg and the temperature is 13°C has a…

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Q: 2. Make a list of some facts in this article that relate to what we have studied so far. What We…

A: 1  As bectrium are able to substitute phosphorus with arsenic it indicates that chemistry of arsenic…

Q: By definition, what reaction equation does the AG°f for liquid propanal refer to? Choose…

A: We can see that propanal have C, H and O in its formula, so to from propanal carbon, Hydrogen and…

Q: How many molecules of CBR4 are there in a (1.63x10^2) g sample? Note: Your answer is assumed to be…

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Q: Please answer the following question:

A: SCENARIO B 2. Answer: This issue is best studied in a field setting.2. Why? Natural Behavior:…

Q: +2 +1 +1

A: Answer:Opposite charges attracts each-other and same charges repel each-other and magnitude of that…

Q: Briefly describe the physical processes that are used to clean municipal waste water

A: Wastewater is subjected to physical treatment, which involves the use of separation techniques,…

Q: Everything in the world is made of matter. Matter is anything that takes up space, including us! The…

A: Matter is anything that takes shape on earth and has a definite mass.  e.g: House, chair, oil,…

Q: Sample No. 1 2 3 4 5 Mass 5.029 5.010 4.983_ 5.036 4.989 Average Mass Average Deviation Standard…

A: Mean = mean or average is the sum of all total population or vale and divided by its sample…

Q: a. b. C. Br осно Ph OH

A: Given are organic reactions.Lets see reagents for each.

Q: Upload a drawing of a graph showing the change in potential energy (on the y-axis) as two molecules…

A: In case both fluorine and chlorine molecule consists of highly electro negative atoms. The bond…

Q: Enter a balanced equation for the reaction between aqueous lead (II) nitrite and aqueous lithium…

A: The reaction between aqueous lead (II) nitrite and aqueous lithium bromide to form solid lead (II)…

Q: Two students A and B performed a four-trail analysis for calcium content in a given sample. The…

A: Accuracy is the measure of closeness of the average of the value to the true value whereas precision…

Q: Briefly state what separates science from opinion?

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Each sketch below shows three objects with an electric charge. In each case, decide whether there is…

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Q: Was there any physical change in the characteristics of trichloroethane when it was added to water?

A: Trichloroethane is micible in water. When it is added to water there is no any physical change.

Q: Predict the missing reactant of this biochemical reaction: ATP ADP kinase N. That is, in the drawing…

A: In the given reaction we have to predict the starting material. The starting material is shown below

Q: What is the main purpose of recrystallisation? A. Chemists recrystallise solids when they want to…

A: Crystallization is the process by which a solid forms , where the atoms or molecules are highly…

Q: Calculate the theoretical percentage of water in calcium nitrate tetrahydrate and show your work.

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Q: Each sketch below shows three objects with an electric charge. In each case, decide whether there is…

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Q: show

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Q: Emissions product of gasoline fuel ................from the exhaust pipe are Co2, MP. Aldehydes,…

A: Burning of gasoline fuel.

Q: 2) For a separate job, you are asked to assemble a number of tricycles by attaching wheels to the…

A: No. Of complete frames=70 No.of rear wheels=123 No. Of front wheels=74 For 1 complete tricycle, no.…

Q: Claim: Light is a particle Evidence: Enter your answer here Reasoning: Enter your answer here

A: Light is an electromagnetic wave which does not need medium to travel.