Victoria carried out the experiment and added 1.9487 g zinc and 1.9371 g iodine to a flask. After the experiment, she recovered 2.3284 g of zinc iodide and 1.4497 g unreacted zinc. What mass of zinc reacted?

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: A college chemistry student is performing this reaction in a lab, where magnesium is burned and…

A: When a reaction occurs,  reaction occurs in stoichiometry amounts.  Product is formed with respect…

Q: a student reacted 14.6 kg of aluminium metal with excess platinum(IV) bromide solution. After the…

A:

Q: When a 12.259-g sample of a compound containing only copper and oxygen was decomposed it produced…

A:

Q: Magnesium nitride is used in the preparation of certain ceramic materials and the manufacture of…

A: 3 Mg (s) + N2 (g) → Mg3 N2 (s) mass of Mg = 12.7 g Actual Mass of Mg3N2 produced = 8.54 g

Q: A sample of sodium reacts completely with 0.142 kgkg of chlorine, forming 234 gg of sodium chloride.…

A: A)  Given :- mass of Cl2 = 0.142 kg or 142 g  Mass of NaCl formed = 234 g  To be calculated :-  Mass…

Q: Butane (C4H10) plus Oxygen yields carbon dioxide plus water

A: Given compound is butane. Butane reacts with oxygen to form carbon dioxide, water and liberate large…

Q: What is the mass of NH3 formed when 3 moles of N₂ react with 3 moles of H₂? Hint: use the periodic…

A: Given, N2(g) + 3H2(g) ----> 2NH3 moles of N2 react = 3 moles moles of H2 react = 3 moles mass of…

Q: An antacid tablet weighing 0.938 g contained calcium carbonate as the active ingredient, in addition…

A: We know that, according to the law of conservation of mass in a chemical reaction, the mass of the…

Q: What is the mass of NaBr in the mixture? Express your answer using two significant figures. A…

A: Total mass .of Cl and Br is equal to 2.08-0.76=1.32g.

Q: As an environmental scientist, you take a sample of soil from a farm field intentionally polluted…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: 2. The picture in the introduction shows that the mass of a crucible and lid was determined to be…

A: Given,  The mass of Crucible and lid = 22.1504 g.  The mass of crucible and lid  and hydrate =…

Q: An aluminum cylinder is 0.512 ft in length and has a diameter of 0.3142 inch. The density of…

A: The objective of the question is to calculate the volume, mass and the number of aluminum atoms in…

Q: Chemists have determined that 18.0 g of water consists of 6.02 x 10 23 molecules. Determine the…

A: Given, 18 g of water consists of 6.02 x 1023 molecules. Container = 1 quart = 946.35 g

Q: White phosphorus consists of a molecule made up of four phosphorus atoms. It burns in pure oxygen to…

A: The given balanced chemical equation                                               P4…

Q: A student performs a dehydration experiment and starts with 4.4021 grams of hydrate. After heating…

A:

Q: 4 The mixture used in today's experiment was prepared as a 1:1:1 mixture (by mass) of sand, salt,…

A: Given ratio is (1:1:1)  This implies that the mass of sand, salt and salicyclic acid are equal. i.e,…

Q: Willa weighs a clean, dry, empty crucible and finds it to have a mass of 95.83 g. After putting a…

A:

Q: Suppose you need 6.0 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to…

A:

Q: When a mixture of aluminum powder and iron(III) oxide is ignited, it produces molten iron and…

A: According to law of conservation of mass, mass can neither be created nor be destroyed in any…

Q: The volume of a sample of lead (density 11.3 g/cm) was determined to be 13.4 cm3. Calculate the mass…

A: Mass of the sample = volume x density                                 = 13.4 cm3 x 11.3 g/cm3…

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: 8.930 12.2mL Metal C 3 sig fig 3. Calculate the mass in grams of a 525 cm³ block of lead. 1. 525…

A: Given, Volume of lead block = 525cm3. Density of lead = 11.342g/cm3.

Q: 15.90 mL of water? (1 ounce = 28.3 g)

A: C) 27.76 mL

Q: The mass of the pycnometer with water is 30.5 g, while the mass of the pycnometer is 36.5 g. What is…

A: The mass of pycnometer with water = 30.5 g The mass of the pycnometer = 36.5 g The mass of water =…

Q: Read the descriptions below of two substances and an experiment on each. Decide whether the result…

A: Sample A The sample A is powder .   When distilled water is added one part is easily soluble and…

Q: 50.0 kg mixture of salt and water is 15.0% (by mass) salt. Give the mass of the salt and water in…

A:

Q: The density of Neon (Ne) at a specific temperature and pressure is 3.21 x 10-5 lb/in3. Calculate the…

A: Given: The density of Neon (Ne) at a specific temperature and pressure = 3.21 x 10-5 lb/in3  We have…

Q: A student is given a 6.216 g mixture of iron filings, calcium chloride, and sand. He separates the…

A:

Q: A piece of alminum foil contains 3.6 x 1021 aluminum atoms.  1) What is the mass of the aluminum…

A:

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

A:

Q: About two centuries ago, Benjamin Franklin showed that 1 teaspoon of oil would cover about 0.5 acre…

A: The volume of the oil (V) = Area (A) x Thickness (T), or T = V/A  Given: The volume is 5.0 cm3. The…

Q: 8.00 grams of sodium sulfate dissolves in water. This is then reacted with 8.00grams of calcium…

A: To determine the product formed when sodium sulfate reacts with calcium chloride ( ), we need to…

Q: You heat 2.53 grams of metallic mercury in air, which produces 2.73 grams of red-orange residue.…

A: The mass of oxygen that react with 2.53 g mercury is,

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

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.