A student performed an experiment of heating a hydrate and obtained the following data.    the mass of the empty crucible was 17.556g  the mass of crucible and a hydrate was 21.018g  the mass of the crucible and anhydrous salt ( after heating ) was 19.641g Calcualte the mass of the hydrated salt.

Q: A 0.181 g piece of solid aluminum reacts with gaseous oxygen from the atmosphere to form solid…

A: The reaction of aluminum with gaseous oxygen can be expressed as,                        4 Al + 3 O2…

Q: The radius of a copper (Cu)atom is roughly 1.3 x 10 10 two separate copper atoms? (Assume there are…

A:

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in…

A: The fermentation of glucose involves the reaction

Q: A total mass of 8 identical packets of potatoes is 3.68 kg. what is the total mass of 12 such…

A:

Q: Give the chemical symbols for the following elements: (a) potassium, (b) tin, (c) chromium, (d)…

A: a K  b Sn  c Cr  d B  e Ba  f Pu

Q: In an experiment, 10.00 g of red mercury(II) oxide powder is placed in an open flask and heated…

A: In this problem e have to find the mss of oxygen formed by using the law of conservation of mass.…

Q: A beaker has a mass of 225.08g . When a liquid is added to the beaker, the combined mass is…

A:

Q: A bank teller is asked to assemble $1 sets of coins forhis clients. Each set is made up of three…

A: Given that : Set of coins =6 coins that are three quarters, one nickel, and two dimes. Mass of one…

Q: Consider a 25.09 g cube of cadmium metal, an element which forms some of the most toxic salts known,…

A: The length of one side of cube = 1.45 cm

Q: The following is an example of a physical change: O formation of rust O production of energy by…

A: Physical change: In a physical change only the state of matter changes. In this change different…

Q: Carry out each of the following calculations, paying special attention to significant figures,…

A: Significant figures are the number of digits in a value, often a measurement, that contribute to the…

Q: A Canadian, driving in the U.S.A., fuels their car at a cost of L The current monetary exchange rate…

A:

Q: 4. The manufacturers of the aspartame-containing sweetener claim that one packet of their sweetener…

A: As we know that some compounds which are not sugars but happens to be much sweetner than glucose,…

Q: What is the mass of a golf ball traveling at 82.0 ms 1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: What mass of iron in the nail reacted with the water?

A:

Q: In the SI system of units, the mole is one of seven base units. It is frequently used in chemical…

A: yes , mole should be considered as the SI unit. The mole is the basic unit of amount of substance in…

Q: Tin reacts with oxygen to form tin oxide. In a particular laboratory experiment in which oxygen…

A: We are given different data for 3 different trials.  We have to calculate for each trials…

Q: In an experiment, 125 cm3 of zinc and 125 cm3 ofiodine are mixed together and the iodine is…

A: Given data Volume of Zinc = 125 cm3  Volume of iodine = 125 cm3  density of Zinc = 7.13 g/cm3…

Q: The following picture represents.. Mixtures of elements Mixtures of compounds Molecules of elements…

A: What are the chemical species present in the following

Q: Which of the following is a homogeneous mixture? a) water and sand b) water and salt c) water and…

A:

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: A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C.…

A: Given : 5 g of Calcium chloride i.e CaCl2 is dissolved in 15 g of water at 22 oC.

Q: In a reaction, 34.0g of chromium(III) oxide reacts with 12.1g of aluminum to produce chromium and…

A: 34.0g of chromium(III) oxide 12.1g of aluminum Both of these react to produce 23.3g of chromium and…

Q: State whether the following properties of matter arephysical or chemical.(a) An iron nail is…

A: a.

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…

Q: A    bullet    recovered    from    a   crime    scene    has   a   mass    of    9.68    g.    A…

A: .357 Magnum is a low velocity cartridge. The .357 is to some extent reliant on mechanical wounding…

Q: Imagine you are working in a lab, and you want to prepare a solution of cobalt(II) chloride. You…

A: Given the mass of unknown hydrate of cobalt(II) chloride, CoCl2.xH2O = 1.0096 g mass of CoCl2(s)…

Q: A sphere of pure iron metalcontains 9.57 x 1024Fe atoms. What is the radius of the sphere in…

A:

Q: is this correct, especially questions 3 and 7 on the second page. THANKS :)

A: 3) According to the question the weight of empty flask and stopper is 34.232 g. The weight of flask,…

Q: The mass of the solution totals 20 grams.   C. The temperature of the solution is 350 C.   D.

A: Correct option is C. The temperature of the solution is 35 degreeC. These is due to when calcium…

Q: If a sample of matter is uniform throughout and cannot be separated into other substances by…

A: element and compound are pure substances that have uniform throughout the composition.

Q: In a reaction, 28.6 g of chromium(III) oxide reacts with 10.2 g of aluminum to produce chromium and…

A:

Q: Classify each substance by composition, first as mixture (MX) or a pure substance (PS): sugar…

A: We know, Mixture : A mixture is any substance which is made up of two or more different substance ,…

Q: What is the mass of a golf ball traveling at 71.8 ms1? The rest mass of a golf ball is 45.9 g, as…

A: 45.9 g is the answer

Q: A ______________________is the physical combining of two or more substances (not necessarily…

A:

Q: Gaseous methane (CH,) will react with gaseous oxygen (O,) to produce gaseous carbon dioxide (CO,)…

A: The reaction of Methane and oxygen is

Q: Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in…

A: The fermentation reaction is glucose → ethanol + carbon dioxide  Amount of glucose fermented is 200g…

Q: A student determined that his/her sample was 45.25% Cl-. If his/her original unknown sample weighed…

A: Mass(%) = (Mass of sample)*100/(Total Mass)

Q: Which of the following is a physical property? O chlorine gas will not burn O chlorine can be used…

A:

Q: What is the all chemical properties

A: Characteristics which helps us to differentiate one substance from another are known as properties.…

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three…

A: The data given is,   Before After distilled water 57.160 g 70.990  g sodium acetate 70.990…

Q: Franklin was performing an experiment by combining hydrochloric acid and sodium hydroxide. He…

A: In the experiment of Franklin, the mass of the reactant material is 35 g. But after the reaction,…

Q: Stainless steel is composed of iron, manganese, chromium, and nickel. If a 2.00 g sample was…

A:

Q: When a 39.71 g rock was placed in a graduated cylinder with 18.62 mL of water, the water level rose…

A: Ratio of mass to volume is termed as density which can be represented by a formula as:…

Q: Two students were tasked to weigh 100 mg of sodium chloride (NaCl). Student A pressed the tare…

A: The given data contains, mass of weighing paper = 0.0011 g. mass of weighing paper plus NaCl is…

Q: What is the mass of a golf ball traveling at 88.1 ms1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: What is the difference between a physical property and a chemical property?

A:

Q: A student observed the following data: Water temperature change Weight of water 8° C Metal…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.