A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats the experiment five times and collects the following data: 40.220gmol, 40.654gmol, 40.314gmol, 40.165gmol, and 40.554gmol. If the accepted value for the molar mass is 40.304gmol, what is the percent relative error for the average of this data? Give the answer with three significant figures.

Q: Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium…

A: HCl (aq)   +   NaOH (aq)  ----->  NaCl (aq)  +   H2O (l)Number of mol NaCl formed = number of mol…

Q: A chemist prepares a solution of silver nitrate (AGNO,) by measuring out 77. g of silver nitrate…

A:

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A: According to the chemical reaction, shown below, 3 mol of oxygen gas is produced by decomposition of…

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A: Given  mass of HBr     = 36 gram  mass of NaOH = 10.9 gram  mass of water   = ?

Q: The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A 9.5…

A:

Q: The average dollar bill is 1.8x107 nm long and weighs 0.987 g.  The distance to the sun is 1.5x108…

A: Mole : Mole is the unit by which we measure the amount of substance. One mole is equal to the number…

Q: Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous…

A: 1) Write the balanced chemical equation. 2) Calculate the limiting reagent by taking the reference…

Q: student performs Experiment 7 using copper wire as the initial copper source and obtains the…

A: Given mass of dry beaker is 120.4265 g  Given mass of dry beaker + copper wire is 122.4715 g  After…

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A: General chemistry.

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A:

Q: Suppose 0.972 g of barium nitrate is dissolved in 50. mL of a 0.30 M aqueous solution of sodium…

A: 0.972 g of barium nitrate Ba(NO3)2 0.30 M aquous solution of spdium chromate Na2CrO4 Volume of…

Q: How many.grams F in 584.8 g Br2F6? Put the answer in the box in regular (non-scientific) notation.…

A: Number of moles is defined as given mass divided by molecular mass.

Q: A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO.) solution to a reaction flask.…

A: Given volume = 145 ml  Molarity  = 0.00260 mol/litre    Molarity = number of moles Volume in litre

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: Balancing of chemical reaction- It consists of reactant (starting material) and products…

Q: Using the mass of the empty beaker and the mass of the beaker + KOH, calculate the mass of KOH…

A: Number of moles = Mass in g/molar mass

Q: Suppose 0.377 g of potassium chloride is dissolved in 100. mL of a 37.0 m M aqueous solution of…

A:

Q: A mixture has three components. The percentage of sand was determined to be 37.31 %, the percentage…

A: Given: percentage of sand = 37.31 % percentage of benzoic acid = 37.45 % percentage of salt = 31.69…

Q: How many C atoms are present in the sample of C3H8 with mass 7.11 g? Avogadro's number is 6.022 x…

A: Given : Mass of C3H8 = 7.11 g

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A: Concept :  Number of moles = mass of the given substance/ molar mass of the given substance.  It's…

Q: The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A 9.5…

A: The reaction for the decomposition of KClO3 is shown below:

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A:

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A:

Q: The chemical formula for hydrogen fluoride is HF. A chemist measured the amount of hydrogen fluoride…

A:

Q: During the experiment, a student calculated the mass of chlorine in the compound to be 1.153 g. How…

A:

Q: Suppose 1.73g of barium nitrate is dissolved in 100.mL of a 63.0mM aqueous solution of sodium…

A: Stoichiometry is mainly based on the calculation of moles and molarity. These two values are used to…

Q: How many grams F in 511.9 g Br2F6?    Put the answer in the box in regular (non-scientific)…

A: Given: Mass of Br2F6 is 511.9 g and we know that the molar mass of Br2F6 is 273.7984 g/mol

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A: Given:  KI produced = 676 g  To calculate:  no. of moles KI produced = ?

Q: The chemical formula for magnesium sulfide is MgS. A chemist measured the amount of magnesium…

A:

Q: The chemical formula for magnesium oxide is MgO . A chemist measured the amount of magnesium oxide…

A: Consider the given information is as follows; Mass of magnesium oxide (MgO) produced = 904. g Moles…

Q: researcher is using 7.20 x 1023 molecules of chlorine gas (Cl2) in an experiment. How many grams of…

A: Number of Molecules = 7.20 ×1023  Moles = Number of molecules/6.022×1023 = 7.20 ×1023/6.022×1023 =…

Q: Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium…

A: Given, Writing the balanced chemical equation for the following given reaction, HBr + NaOH ➝ NaBr +…

Q: Determine the mass of the product from the following data.    Mass Aluminum Foil (g)      2.5415…

A:

Q: A chemist measures the amount of oxygen gas produced during an experiment. He finds that 6.6 g of…

A:

Q: (Incorrect) An impure sample of hydrocarbon having a total mass of 41.0 g undergoes combustion…

A: Molar mass- It is the sum of atomic masses of all atoms present in one molecular formula of a…

Q: A chemist prepares a solution of magnesium fluoride (MgF,) by measuring out 0.0152 µmol of magnesium…

A: Given that,  Moles of MgF2 added to 200 mL(= 0.2 L) flask = 0.0152 µmol = 0.0152×10-6 mol

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.