The volume of a sample of lead (density 11.3 g/cm) was determined to be 13.4 cm3. Calculate the mass of the sample. 20.2 g O 1.19 g O 0.843 g O 151 g

Q: Calculate the mass of 9.80 x 1026 atoms of silver. O 1.76 x 10 g O 1.06 x 1029 g O 5.47 x 1048 g O…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 1) ВаО? 2) Pb(NO:)2 + KI 3) Cs + Br2 4) Al + Fe(NO3)2

A: Given 1) BaO2 ------> 2) Pb(NO3)2 + KI ------> 3) Cs + Br2 ------> 4) Al + Fe(NO3)2 -------

Q: How many grams of zinc are there in 22.7 g of ZnCl₂? a. 035 g b. 10.9 g c. 0.17 g d. 1476 g

A: 1 mol of ZnCl2 contains 1 mol of Zn atom is present The molecular weight of ZnCl2  = (65.4 +2 x 35.5…

Q: sample

A:

Q: A 2.45 g sample of magnesium completely reacts with oxygen to form 4.06 g of magnesium oxide. Use…

A: Given : Mass of Mg = 2.45g Mass of MgO = 4.06g

Q: We have 40.5 cm of a material. How many g is it? The material has density of 9.50 g/cm O 68.0 g O…

A: • The values provided in the question are:-  i) Density of a material, d = 9.50 g/cm3  ii) Volume…

Q: A student collected the following data in the laboratory: Mass of flask 52.8741 g Mass of flask…

A: Ascorbic acid reacts with sodium hydroxide in a acid base titration reaction. This reaction is also…

Q: We have 425 cm3 of a material. How many g is it? The material has density of 0.345 g/cm O 68.0 g O…

A: We have to find mass ,volume and density  is given in the question  Volume of the material = 425 cm3…

Q: Sodium reacts with oxygen to produce sodium oxide in a synthesis reaction. A chemist needs to…

A: We can determine the mass of Na to start with by considering the balanced equation.  The reaction…

Q: 19.964 g of zinc (7.133g/mL) is placed in a graduated cylinder containing water, the final volume of…

A:

Q: Use the information and models to answer the following questiön. A group of students are trying to…

A: Electrical conductive material are those which can transfer charge from one end to other end.

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: Complete combustion of 16 liters of gasoline consisting of a mixture of heptane gas (C7H16) and…

A: Recall the reaction for complete combustion of a mixture of heptane and isooctane.       C7H16 +…

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: Which part of the description of a compound or element refers to its physical properties and which…

A: Physical property: Physical property of an element or compound includes chemical composition,…

Q: a) If sea water contains 3.5% NaCl, by mass, how many grams of NaCl can be obtained from 1.00 gallon…

A: Density of sea water = 1.02 g/mL

Q: A 1980 penny has a mass of 3.025 g and is 85.0% copper. What is the mass of copper in the coin? A)…

A:

Q: The mass percent of a solution is 12.00% and contains 30.0 grams of MgCl2. What is the total mass of…

A: Mass %=Mass percentage is calculated as the mass of a component divided by the total mass of the…

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: A 67.2 gg sample of a gold and palladium alloy contains 3.55×1023 atomsatoms . A) What is the mass…

A:

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: • Sucrose: C12 H22O11 • Copper (I) Chloride: CuCl • lodine: I2 • Potassium lodide: KI Our goal is to…

A: The three main factors that affect the conductivity of a solution are:  The concentration of…

Q: A. 2NO2(g) → N2O4(9) B. Fe(s) → Fe(1) C. 302(g) → 203(g) D. 12(g) → 12(s) E. 2Fe(s) + O2(g) →…

A:

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

A:

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: The percentage of argon gas in dry air A. 0.035% B. 0.065% C. 20.9% The percentage of other gases in…

A: Composition of gases in dry air is  1 O2      20.9% 2.N2      78.1% 3 Ar      0.93%

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: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: Una masa de mercurio ocupa 0.750 L Qué volumen ocuparia una masa igual de etanol? La densidad del…

A: Note - Since you have asked multiple question, according to our policy, we are supposed to solve…

Q: 38. How many grams of hydrogen are there in 2.5 g of water? b. 0.28 g a 3.5 g c. 0. 95 g d. 2.22 g

A: Given data  Given mass of water=2.5g Grams of hydrogen=??

Q: A sample of gas mixture from a neon sign contains 3.48 x 10-4 mol Ne and 1.12 x 10- mol Kr. What are…

A:

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: 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: Classify these properties of the metal lithium as physical or chemical. Physical Chemical

A: In the given question we have to classify the physical and chemical properties of lithium metal.…

Q: Why is decoration rather than filtration the preferred method of separating the salt from the…

A: The process for the separation of mixtures of immiscible liquids or of a liquid and a solid mixture…

Q: What is the mass, in grams, of 5.23 moles of oxygen gas?

A: Number of moles of the substance is the ratio of mass to molar mass.

Q: A pure sample of compound X contains only carbon and oxygen in a mass ratio of 0.750 g C : 1.00 g O.…

A: A pure sample of compound X contains only carbon and oxygen in a mass ratio of 0.750 g C: 1.00 g O.…

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

A:

Q: A chemist adds 1.30 L of a 5.83 x 10 mmol/L copper(II) fluoride (CuF,) solution to a reaction flask.…

A:

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: Calculate the mass of Cu in g from 8.20 kg CuFeS2

A: From the chemical formula it is clear that 1 mole CuFeS2 contains 1 mole Cu. Molar mass of…

Q: 8A 1A H 2A 3A 4A 5A 6A 7A He Li Be BCNO F Ne Na Mg 3B 4B 5B 6B 7B 8B 1B 2B A1 Si PS CI Ar K Ca Sc Ti…

A:

Q: 1- lopper and nitric acis Porassium ioaize

A: "Since you have asked multiple questions, we will solve the first question for you ( as per our…

Q: You wish to prepare 207 grams of 14.7 % Ca(NO3)2. You will need grams of calcium nitrate and mL of…

A: Given mass of solution = 207 gm

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: 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: A 67.2 g sample of a gold and palladium alloy contains 3.07×1023 atoms . What is the mass…

A: Given : Mass of sample = 67.2 g And total number of atoms = 3.07 X 1023 atoms Assuming the moles of…

Q: SiO2 (s)+ C(s)Si(s) + CO(9) a. SIO2(s) C(s)- Si(s) + |CO() > b. Liquid silicon tetrachloride is…

A:

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

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".