If you did not know the identity of the metal in your jar, what experiment might you have done to prove that the metal was in fact the element pure zinc? Write two or three sentences describing what property you would measure and how you would measure it if you were in the laboratory.

Q: 4. AB,(aq) + Nz,L(aq) – > NzB(aq) + AL(aq) 5. AZ4(8) + Q2(8) -- > Z,Q(1) + AO½(s) 2 of 2 Law of…

A: According to the law of conservation of mass , mass of the Substance can not be created or…

Q: Most abundant metal on the surface of the earth:(a) Iron(b) Aluminium(c) Calcium(d) Sodium

A: There are many metal on the surface of the earth but the one that is most abundant on the surface of…

Q: 1.Why is tap water a homogenous mixture, whereas distilled water is a pure substance?  Explain.

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

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: 1.) Write, complete and balance the following equations. You must include correct physical states.…

A: As the question with multiple sub parts as per the guidelines we are supposed to do only first three…

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 chemical reactions do you observe in nature?

A:

Q: Why is it important to be aware of the ingredients of the food you eat? Is fish good for your…

A: To grasp: Knowledge of foods we eat and characteristics of elements present in it

Q: An acid solution is 0.120 M in HCl and 0.200 M in H2 SO4. Part A You may want to reference (Pages…

A:

Q: A student needs exactly 25.0 mL of a 1.5M solution of NaOH (molar mass: 40.00 g/mol). They have…

A: Given: Concentration of NaOH = 1.5 M Volume of solution required = 25.0 mL = 0.025 L…

Q: a) upon heating, a blue powder turned white and lost mass b) A white soil forms three different…

A: Given: For each of the changes have to decide whether two or more elements formed a compound or if a…

Q: Given the following data, calculate the mass percentage of copper in the unknown copper oxide sample…

A: According to the question, Mass of empty test tube:…

Q: Substances:  1.Burning of Matches 2. Candle wick in burning of candle  3. Table Salt dissolved in…

A: Chemical Change : chemical change occur when a substance combined with another substance to form a…

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

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: The concentration of Al3+ ion in a sample of spring water is 24.7 ppm. What mass of Al3+ ion is…

A: 1. Given that : Concentration of Al3+ ion in spring water (in ppm) = 24.7 ppm Density of spring…

Q: hich metal is the best conductor of electricity? Choose from the choices below: Gold…

A: The answer of this question is given in step 2

Q: Complete this sentence  THe electrical conductivity of a sample will       when the size of the…

A: When a Voltage is applied to the electrode dipped intoan electrolytic solution , ions of the…

Q: You have a sample of soil. Soil is a heterogeneous mixture. You separate the different size…

A:

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: Is there a chemical reaction between copper and silver nitrate? Which elements react, and what is…

A: The chemical formula is a short term notation which is used to represent the no. of atoms present in…

Q: Students are given samples of unknown chemical compounds. The samples could be ionic, molecular,…

A: Experiment -1 Solubility in water: Ionic compound are soluble and molecular compounds are insoluble.…

Q: The natural abundances of elements in the human body, expressed as percent by mass, are: oxygen…

A: The given data contains, person weighs =62 kg =62000 g. Natural abundances in mass percent are, O…

Q: Suppose now that you wanted to determine the density of a small crystal to confirm that it is…

A: total volume = 20.0 mL volume of CHCl3 = x volume of CHBr3 = 20 - x total mass = 20 x 2.07 = 41.4 g…

Q: An analyst performed an analysis of a sample for its calcium ions content got the following results:…

A: Accuracy means the agreement of a particular value to the true value. Hence accuracy is the measure…

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: The physical basis for life is the carbon atom. This atom   a. is more abundant than silicon.   b.…

A: Carbon is a chemical element with the symbol C and atomic number 6. It's non metallic and…

Q: Solvent Hydrogen Oceans Ponds Cooking Cleaning Boiling Freezing Properties Colorless Tasteless Oil…

A: The blanks are filled below:

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

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Q: One of the inherently satisfying features of chemistry is that chemical materials form and interact…

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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: Marie Curie was a Polish scientist that specialized in chemistry and physics. She wanted to…

A: Marie Curie  Marie Curie is renowned for discovering radium and polonium, as well as for making a…

Q: About Sampling, tick only the incorrect alternative(s): A) Identifying the nature of a substance…

A: B) A type of error that is known due to procedures that cause a measure to be too large or too small…

Q: AATT You are a researcher in a geochemistry laboratory. A colleague brought to you a new mineral…

A: Here we are required to find the mass percent.

Q: The elements of Group 1-B (Cu, Ag, and Au) are sometimes referred to as the “coinage  metals.” Why?…

A: Elements Copper ( Cu),  Silver ( Ag) and Gold (Au) are called as 'coinage metals' because as they…

Q: The laboratory compared the mass of the starting reactants and final products of the combustion…

A: The total mass of reactants before burning = 2.72 kg

Q: Describe the PHYSICAL PROPERTIES of the following substances Specifically, what type of matter is…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: All of the following are properties of zinc. Which is NOT a physical property. It corrodes with…

A: In this question, we will select the statement which is not a physical property that means it is a…

Q: From your initial observations, you suspect that the two beakers contain the same compound.…

A: If the compound contained by two beakers is pure, it can be easily proved that compounds are…

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: Metal or Nonmetal Explanation: State of Matter b. Metal or Nonmetal Explanation: Luster Metal or…

A: Metal : It is a type of solid substance which is a hard , shiny and very good conductor for heat…

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 being represented by the picture belovn a compound being physically separated into its…

A: Element: The element is formed by only one type of atom. All the atoms in the element are the same.…

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: If a chemist were given 2.99 grams of a mixture of sugar and sand which gave 1.35 grams of sand on…

A: Given : Mass of mixture = 2.99 g Mass of sand = 1.35 g