1) Carbon disulphide, CS2, is a liquid having a density of 1.26 g/mL. What volume is occupied by 5.50 x 1022 molecules of CS2?

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

A: a.

Q: You wish to prepare 203 grams of 13.1 % FeCl, You will need grams of iron(II) chloride and mL of…

A:

Q: What is the difference in mass between a nickel that weighs 4.8 g and a nickel that weighs 4.8673 g?

A: Given,  Mass of nickel = 4.8…

Q: 6. The density of salt is 2.16 g/cc. If you used 3.00 cc on your food, how much in ug is that?

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: What mass of iron (d = 7.874 g/cm') does a 2.0 in x 1.5 in x 10.0 in sample have?

A: Given  density of Iron = 7.874 gram/ Cm3 Volume = 2.0 inch × 1.5 inch × 10 inch 1 inch   = 2.54 Cm…

Q: The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols…

A: A question based on analytical separations that is to be accomplished.

Q: Select the set-up for the mass % of fluorine, F, in PF3. O (27/42) x 100 O (9/42) x 100 O (19/50) x…

A:

Q: 5. A 2.000 g sample of CoCl2·xH2O is dried in an oven. When the anhydrous salt is removed from the…

A: By calculating moles of CoCl2 and H2O we can find value of x.

Q: A My Hôme OWLV2 | Online teaching and learning resource from Ce [References] The population density…

A:

Q: The density of liquid ethanol C2H5OH is 0.789 g/mL. If 505 grams of glucose decomposes, how many…

A: The decomposition reaction of glucose can be expressed as,                 C6H12O6 (s) -----> 2…

Q: The concentration of carbon monoxide in an urban apartmentis 48 μg/m3. What mass of carbon monoxide…

A: 1 ft = 0.3048 m Therefore, dimensions of the room are : 10.6 ft x 14.8 ft x20.5 ft = 3.23 m X 4.51 m…

Q: What is the weight of the grams of Na equivalent to the same number of atoms as those in 15 g of K?

A: Given: Mass of potassium= 15 g  The molar mass of potassium = 39.098 g/mol Moles of potassium=Mass ÷…

Q: What is the mass in grams 1.46 x 10^24 of atoms of krypton? a. _____grams b.  How many krypton…

A:

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: You wish to prepare 205 grams of 14.3 % MgSsO4- You will need grams of magnesium sulfate and mL of…

A: Given that, % of MgSO4 = 14.3%  ,  Total mass = 205 gms Also, % of MgSO4 = Mass of MgSO4Total…

Q: How many atoms are contained in 4.1 g of carbon? How can you round this answer to 2 significant…

A: 1 mole of any substance contains 6.023×1023 atoms.1 moles of carbon atoms weigh 12 g.

Q: What is the mass, in kilograms, of 7.76 x 10-4 molecules of carbon tetrachloride? Round your answer…

A: The given data contains, number of molecules of carbon tetrachloride = 7.76×1024

Q: 3. A student forgot to pre-measure the mass of the second evaporating dish prior to decanting the…

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

Q: What is the mass in grams of 7.80x10^15 molecules of CO?

A:

Q: 1.Which of the following statements about a compound is incorrect? (a)  A molecule of a compound…

A: The question lies in basic chemistry of atoms, molecules and compounds. Let us first be clear about…

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: 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: 1) Which of the following is chemical property? A. Objects made of silver become tarnished. 3+ B.…

A: Chemical property of a substance is the property that observed after or during the chemical…

Q: How many mL of paraffin wax would it take to make a candle of this size, with a volume of 11.0 in³ ?

A: Given: Volume = 11.0 in3.

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: You wish to prepare 210 grams of 16.3 % Mg(NO3)2 You will need grams of magnesium nitrate and mL of…

A: Given that we have to prepare a 210 grams of 16.3 % MgNO32 solution. Recall the expression of mass…

Q: Brass is an alloy that is approximately 67% Cu and 33% Zn, by mass. How many grams of Cu and Zn are…

A: % by mass = Mass of the componentMass of the whole compound X 100 Given that,  % by mass of Cu=67% %…

Q: When Kay added 30 g of hydrochloric acid (HCI) to 65 g of Zn, bubbles appeared and a white…

A: We know, when Zn reacts with HCl, it will produce ZnCl2 and H2 following the reaction  Zn + 2HCl…

Q: You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the…

A: The volume of the flask not occupied by the solid is needed to be find out.

Q: What is the mass in grams of 9.25 x 10^24 molecules of CO2? Write the answer in decimal form.

A:

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: What is the mass of 1.86x10^24 molecules of nitrogen

A: first find the no. of moles of N2  then find mass by multiply by its molar mass

Q: What is the mass of 4.00 cm^3 of sodium, with a density of 0.97 g/cm^3?

A: MATHEMATICAL TREATMENT OF MEASUREMENT RESULTS Learning Objectives By the end of this section, you…

Q: how many grams of Cu(NO3)2 can be made from 25 grams of copper

A: The reaction involves,

Q: Carbon tetrachloride, CCl4, was a popular dry-cleaning agent until it was shown to be carcinogenic.…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of one mole of molecules of a substance is known…

Q: mmonium nitrate: NHẠNO3(s) N20(g) + 2H209) How many g of dinitrogen monoxide can be made from 1.62 x…

A: In this question, we want to determine the mass of N2O gas in gram unit.  You can see details…

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: How many grams are in 2.85 x 10^23 molecules of CO2?

A: The question is based on mole concept. we have to calculate mass of carbon dioxide present in the…

Q: Mixtures are divided into two classes based O 1. mixtures and matter on their appearance. What are…

A:

Q: The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols…

A: The density of water containing coffee(aqueous layer) is around 1.00 g/mL Given the density of the…

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: What is the mass (in kg) of 6.89 × 10^25 molecules of carbon dioxide?

A: Mass is a physical quantity which indicates the amount of matter present in a substance. Its units…

Q: The concentration of carbon monoxide in an urban apartment is 48 µg/m°. What mass of carbon monoxide…

A: Concentration of CO = 48 µg / m3 or 48 × 10-6 gm/m3 Volume of room = 12 × 12.5 × 21.5 ft. 1 Feet =…

Q: What is the volume (in mL) of isopropanol that contains 7.23 × 1022 molecules of isopropanol? The…

A:

Q: what is the price of one gram of mercury if 1 pound of mercury is $2.03

A: The price of 1 pound of mercury is given and it is required to calculate the price of 1 g of mercury…

Q: 1. SC.912.P.8.2 - Discuss volume, compressibility, density, conductivity, malleability, reactivity,…

A: When a mixture(or a pure substance) has a single phase in it, it is called homogenous system. When…

Q: A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is…

A: Given Information - mass of empty flask =  78.23 g  mass of flask filled with water = 593.63 g  mass…

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.