If you did not properly dry the beaker before adding the sample, how would this influence the final calculated percentage of the isolated sample? (Higher calculated %, lower calculated %, same calculated %)? Why do you believe this?

Q: by your instructor. Calculations 4. Calculate the mass of the hydrate (2 - 1) 5 Calculate the mass…

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Q: A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this…

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Q: Determine the percent ammonia, NH3, in Co(NH3)6Cl3, to four significant figures.

A:

Q: How many grams of ibuprofen are in 0.540 moles?

A: number of moles = mass/molar mass  mass = moles × molar mass

Q: Why could it be possible to get a percent recovery greater than 100%?     The compound was not…

A: Usually, the percent yield is lower than 100% because the actual yield is often less than the…

Q: STATION 9 (CALCULATION ONLY) A certain volume of an alcoholic beverage contains 15.00 mL of ethyl…

A: Mass of 1 mole is equal to the molar mass. 1 mole = 6.022 x 1023 atoms/molecules  Moles = Mass/Molar…

Q: Run 2: Initial grams of NaHCO3 %3D

A: The balanced chemical equation has the number of atoms of the reactants becomes equal to the atom…

Q: If at the beginning of the experiment, you accidentally recorded the mass of your empty beaker to…

A: It is given that mass of empty beaker is recorded higher than the actual mass of beaker.

Q: 9. When 2.43 g of magnesium was heated with oxygen to produce 4.03 g of magnesium oxide. a.)…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3only.…

Q: sample of an unknown compound containing only carbon, hydrogen and nitrogen is subjected to…

A: We have to find empirical formula of given compound and give its chemical equation of reaction with…

Q: This is the chemical formula for acetone: (CH,),CO. Calculate the mass percent of hydrogen in…

A:

Q: 3. Find the mass (m) of the following samples in two decimal places. a) How many grams of sodium…

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Q: With the following data determine the % composition of KNO3 in the unknown sample: Initial Mass of…

A: The question is based on experimental chemistry. We need to calculate percentage potassium nitrate…

Q: Select the coefficients necessary to balance each equation. Choose a coefficient for every compound.…

A: The coefficient for every compound is chosen such that the number of moles of each element present…

Q: To measure the amount of chlorine in a well-boring fluid, an analytical chemist adds 0.3100M silver…

A: The reaction taking place is given as, Given: Mass of AgCl produced = 2.49 g. And mass of sample…

Q: Determine analysis: 52.2% C; 13.0 % H; 34.8 % O. 1 ( An organic compound witha molar mass of 116.2…

A: Given:Molar mass = 116.2% C = 62.01 %% of H = 10.43%% of O = 27.54 %Determine the EF and MFNOTE: MF…

Q: Given the empirical formula of NO2 and a molecular weight of 92.0 g/mol, what is the molecular…

A: atomic mass  N = 14 , O= 16

Q: . Household sugar, sucrose, has the molecular formula C12H22011. What is the %, by mass, of carbon…

A:

Q: A compound has a percent composition of 24.74% potassium (molar mass = 39.10 g/mol), 34.76%…

A: Given that, in a compound has three component potassium, magnesium, and oxygen. The mass percent of…

Q: is the A:B ratio just a place holder for the unknown compound can you use other variables in place…

A: Answer: This question is based on the fundamentals of crystal structure, where different type of…

Q: What is the mass of 4.60 moles of magnesium chloride, MgCl2 ? Express your answer with the…

A: Given, moles of MgCl2 = 4.60 mol

Q: Jse the periodic table to calculate the GFW (molar mass) of aluminum sulfate, Al2(S04)3 to 5…

A: Percent  composition is used to determine the mass percentage of each element present in the…

Q: 6. How many grams are in 2.5 x 1020 molecules of fluorine gas (F,)? 3 sig figs 1 mol F, 37.996 g F,…

A: Given: The number of molecules of F2 gas is 2.5×1020. The molar mass of F2 gas is 37.996 g/mol.

Q: An unknown compound was analyzed and found to have the following percent composition: 26.7% C 35.5%…

A: Empirical formula :-  The chemical formula which shows only relative number (simple ratio) of atoms…

Q: If a sample of urea, CH4N2O is 55% pure, what is the percent by mass of nitrogen in this sample…

A: Given that -  Percentage purity of urea , CH4N2O is = 55%  Molar/atomic masses are -  C = 12.01…

Q: Calculate the percent by mass of each element

A: General formula for calculating percent by mass:- Percent by mass of X in XYZ =( mass of X/total…

Q: Toluene (C7H8), a common organic solvent, combusts with oxygen...

A: According to the Law of Consevation of mass " all atoms of various elements must be equal in both…

Q: Black Forest Biologicals, a biotech startup, has a promising Alzheimer's drug candidate Compound…

A: From given  Amount of A and B we are calculating theoretical yield and percent yield as follows

Q: compound of the metal with fluorine. Analysis shows that a 36.77−g sample of fluorite contains 17.87…

A: To solve this problem we have to calculate the mass of calcium and it's percentage in the fluorite .…

Q: At what stage was the internal standard added to the prepartions, in the protocol of this…

A: Step : 1             The required answer for the above question is follows as :

Q: Please show the proper calculation of the above answer how 17.72% as it creates a lot of confusion…

A: The objective of this question is to show the calculate a percentage, divide the part by the whole…

Q: More commonly, the empirical or simplest formula of a compound is determined by finding the masses…

A: Answer:Number of moles of a substance is always equal to the ratio of its mass and molar mass,…

Q: The typical grade of Pine Point ore is 3% for Pb, and 7% for Zn. Suppose the sample pictured in the…

A: Given , typical grade of pine point ore is 3% pb . 7%  Zn And total weight of the sample = 13.6kg…

Q: what is the empirical formula for unkown?

A: The question is based on mole concept. we have been given moles of each of the element. we need to…

Q: Data: Trial 1 Trial 2 Mass (g) Mass (g) Mass of crucible, cover, and magnesium (before heating)…

A: Trial 1 : Given : Mass of Magnesium = 0.2437 g  and mass of oxygen = 0.1610 g

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.