A sample of stainless steel contains 10.5% chromium by mass. What mass of chromium, in grams, is present in a 595 g sample of stainless steel?

Q: If it is found that 5.00 mL of a sample has a mass of 5.250 g, what is the concentration of the…

A: Amount of substance present in 100ml of solution is defined as the percentage mass by volume. %m/v =…

Q: You are drying a sample of Ba3(PO4)2. After 5 minutes of drying it weighs 1.2034 g. You continue to…

A: Answer: Percent change in mass will be the ratio of change in mass with initial mass, therefore %…

Q: Why is it important always to use the same balance during the course of an experiment? What are the…

A: Let's focus on these two questions. 1)Use of same balance during the course of an experiment…

Q: In a common laboratory experiment in general chemistry, students are asked to determine the relative…

A: To find: A method for separating two compounds of the given mixture.

Q: Mass of 1L Substance 810 g 1100 g 1250 g 1040 g Alcohol Ethylene glycol (antifreeze) Glycerin…

A:

Q: Given the data below, calculate the mass of copper in the original sample. Mass of original sample…

A: This question can be solved using simple subtraction.

Q: 16) A 0.0758-g tungsten filament 17) A 1.50-g silver coin 18) A 60.0 g sample of FeCl3

A: Given that : We have to calculate the number of moles contained in each of the following samples :…

Q: microscopic

A: According to the question, we need to describe the microscopic view of compound sodium chloride i.e…

Q: A homogeneous mixture of two or more substances is called ________   a. a mess. b. a solution. c. an…

A:

Q: What is the mass of H2SO4 in a 48.1 cm3 sample of concentrated sulfuric acid that has a density of…

A: The given question is related to analytical chemistry. The mass of any compound is equal to…

Q: 6. Given your experience in mass determinations (Experiment 1) and with volumetric glassware…

A: There is two common methods mostly used in chemical laboratory are the determination of mass and…

Q: where are each chemical component

A: Amines are Basic compounds and soluble in Inorganic acids like HCl.  Carboxylic acids are soluble in…

Q: What is the Mass pf Cl- found in the water sample (in grams)? %(w/w) Cl- in the water sample?…

A: Given data,Mass of titrant(AgNO3) used in trial 1=0.76gMass of AgNO3 used in trial 2=0.73gMass of…

Q: A physical property that can be described numerically as the grams of a substance that will dissolve…

A: Physical properties of substance are the properties that can be determined without changing the…

Q: You are given a hammer a battery, a bulb, wires and switch(a) How could you use them to distinguish…

A:

Q: About Sampling, tick only the incorrect alternative(s). Choose one or more: A) Identifying the…

A: Analysis are of two types: qualitative analysis and quantitative analysis. Qualitative analysis…

Q: Whilst working in the pharmacy aseptic unit you are asked to prepare 5 litres of a solution…

A: 1 mmol/mL = 1 mol/L = 1 M  This means 1 L of this solution contains 1 mole KCl  So, to prepare 5 L…

Q: What is the difference between a fractionation and a distillation?

A: The main difference between fractional distillation and simple distillation is the application in…

Q: in a pure sample of blue vitriol, the Cu content is 25.45%. what is the percentage of water?

A:

Q: Classify the following materials as substances or mixtures: absolute (pure) alcohol, milk (as…

A: A material can be classified as mixture or substance depending on their properties. The material…

Q: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

A: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

Q: 1. КОН / Н2О L 2. H30* 1. l2, NaOH / H20 M 2. HСI

A: Organic Transformation for the given Mentioned reaction  1st Basic Hydrolysis  2nd Iodoform followed…

Q: When is sieving and fractional distillation a good method for separating mixtures? Cite an example.

A: Sieving- It is a technique for separating particles of different sizes by using a sieve. For…

Q: Why are intensive properties useful for identifying a substance? A:They describe the amount of…

A:

Q: Mixtures and compounds vary in composition with the latter having a 1) compound. The components of a…

A: A mixture is a physical combination of two or more substances. For example, water and salt.

Q: Which of these is NOT true of chemical changes?

A: Substance can change two ways  1. Physical change  2. Chemical change   we should study major…

Q: 1. Zn(s) + Ag*(aq) = Zn²+(aq) + Ag(s)

A:

Q: An alcoholic fermentation was conducted in the laboratory using 280 g glucose as substrate with a…

A: Formula used are given below: Density = Mass of substance / Volume of substance and Percent Volume =…

Q: Given your experience in mass determinations and with volumetric glassware, which factor used in…

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Q: 7. What kind of a compound is KN and how do you know this? Draw a representation of three units of…

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Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: 750 g Oral 237 mL per bottle Potassium 950 g elemental iodine + 1.5 kgs potassium hydroxide…

A: Given that -  Potassium iodide ,KI  Here only one Compound is given , which is potassium iodide, KI…

Q: Given your experience in mass determinations and volumetric glassware, which factor used in…

A: The density can be determined by using the following formula,

Q: What is the mass in grams for a 50 mL and 100 mL beaker Then calculate the mass of Calcium chloride…

A: mass in gram of 50 ml and 100 ml beaker

Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Given: Percent mass of carbon = 67.31 %. Percent mass of hydrogen = 6.978 %. Percent mass of…

Q: { Al/Pb Zn/Mg Al/Mg Fe/Pb Al/Fe Fe/Mg Al/Sn Fe/Sn Zn/Fe Pb/Sn Zn/Sn Pb/Mg Zn/Pb Sn/Mg

A:

Q: Valuable minerals (chemicals) can be obtained from ores, which are natually occuring mixtures. One…

A: Given : Mass percent of magnetite in ore = 38 % Mass percent of iron in magnetite = 72.4 % And mass…

Q: If the tax on alcohol is Php 500 per proof gallon, how much tax must be paid on 5 gallons of alcohol…

A:

Q: Is distillation a good method for separating a mixture of water and hexane?  Why or why not?

A: distillation, process involving the conversion of a liquid into vapour that is subsequently…

Q: Analyses of several samples of a material containing only iron and oxygen gave the following…

A: Calculate the number of moles of Fe and O in each sample. This can be done by dividing mass of each…

Q: 1. Write an equation showing how the mass of the substance sought can be converted to the mass of…

A:

Q: A student needs to identify an unknown substance found in the lab based on its physical properties.…

A: We are given physical properties like mass and volume and density data, and we have to identify the…

Q: Nitrogen makes up what fraction of the mass of the hum Body? Nitrogen makes up what percentage of…

A: 1.Fraction of Nitrogen in mass of human body  70 kg  of Nitrogen is 1 fraction   2.2 Kg   of…

Q: 1. CuSO4 a. copper(I) sulfate b. copper sulfate c. copper(II) sulfate d. copper sulphide 2. Nal a.…

A: (1) Copper is a d block element, which is also known as transition element. It has atomic number of…

Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Elemental analysis of the compound revealed that it contains  63.57% carbon 6.000% hydrogen 9.267%…

Q: You wish to prepare 217 grams of 19.0 % Cr(CH3COO). You will need grams of chromium(II) acetate and…

A: Given, 217 gram of 19% Cr(CH3COO)2 solution.we are asked to calculate the mass of Cr(CH3COO)2 and…

Q: The concentration of sodium chloride in an aqueous solution that is 2.13 M and that has a density of…

A: Mass percent mainly aids in depicting solute’s potential, available in particular mixture. Mass…

Q: What is the process that allows you to take measurements of mass and volume and determine the…

A: Answer: Mass Determination: To determine the molar mass of an unknown metal chemically, first, we…

Q: 1 mol Nacl 58.44 g NaCl) 1L 0.502 g Nacl 11.74 mL 1000 mL)

A: What is value of the given expression--

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".