Based on the law of conservation of mass, if the total mass of reactants is 22 g, what will the total mass of the products be? 20 g 25 g O 22 g O Unknown - must be determined with an experiment

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: 8.* A4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water when heated.…

A: The question is based on the concept of experimental chemistry. we have to calculate the empirical…

Q: A student started with a sample of Cu of 8.66 grams . After the sample was burned in air, the…

A: The mass of Cu sample = 8.66 grams The mass of sample of Oxide after burning the Cu  ( Cooper oxide…

Q: Suppose you have a sodium sample weighing 11.42 g. What mass of potassium would you need to have the…

A: Given, Mass of Na =11.42 g

Q: A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of…

A: The question is about calculating the mass of Nitrogen in a 169 g sample of the substance -

Q: Two samples of sodium chloride with different masses were decomposed into their constituent…

A: The law of constant composition or law of definite proportions or law of definite composition states…

Q: À 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: Answer :-  1) only 3  i.e. The original solid is not an element.…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: Determine the mass in grams of 7.52 x 10²1 atoms of barium. (The mass of one mole of barium is…

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

Q: The mass ratio of sodium to fluorine in sodium fluoride ls 1.21:1. A sample of sodium fluoride…

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Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

A:

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: Gaseous butane will react with gaseous oxygen (02) to pr 1.16 g of butane is mixed with 6.9 g of…

A: Given the chemical reaction between butane gas and oxygen gas. The products of the reaction are:…

Q: (c) 54.5% C, 9.2% H, and 36.3% O by mass

A: given :-  percentage composition of C = 54.5%  percentage composition of H = 9.2%  percentage…

Q: 3.123 In the formation of carbon monoxide, CO, it is foundthat 2.445 g of carbon combine with 3.257…

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Q: Write a balanced chemical equation for the formation of magnesium oxide form magnesium metal  and…

A: When magnesium is burnt in the air, it results in the formation of magnesium oxide.

Q: Determine the mass in grams of 2.31 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A: The relation between mass and number of atoms:                                    Mass(g)molar…

Q: An alcohol is 70.57 % C and 5.935 % H by mass. The rest is oxygen. What is the empirical formula of…

A:

Q: oxygen atoms

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Q: A 36.41-g sample of calcium carbonate (CaCO3 ) contains 14.58 g of calcium and 4.36 g of carbon.…

A: Given data: Mass of CaCO3 sample = 36.41 g Mass of calcium = 14.58 g Mass of carbon = 4.36 Formula…

Q: 26. 78) 6.347 x 10°atoms of nickel(III) sulfide has a mass of

A: Given, number of atoms of nickel(III) sulfide =6.347×1026 atomswe are asked to calculate the mass of…

Q: Need help

A: The mass of water in oxalic alumina is determined as,

Q: You have 1 mole of oxygen (O₂) gas and 1 mole of ammonia (NH3). Which has more mass? 1 mole of…

A: We are given 1 mole each of Oxygen gas, O2 , and ammonia, NH3.

Q: natural rubidium has the average mass of 85.4678 AMU and is composed of isotopes Rb 85 (mass =…

A: Average atomic mass = ∑i=1XiMiWhere X = mole fraction of the isotope and M is the mass of the…

Q: How many atoms are contained in each of the following? (Please enter your answers in scientific…

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Q: Determine the mass in grams of 7.06 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A:

Q: Determine the mass in grams of 5.79 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given no. Of atoms of barium = 5.79 x 10²¹  1 mole of barium = 137.33 g

Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: CuSO4(aq) + Zn(s) - Culs) + 2nSU4laq) Before the experiment was carried out the following…

A: Percentage of yield is = 83.59

Q: 30. In calcium carbonate what is the mass percentage of  oxygen atoms?    A. 68%   B. 12%   C.…

A: Calcium atomic mass = 40. Carbon atomic mass =12. Oxygen atomoic mass = 16. Here three oxygens are…

Q: sample of aluminum contains 2.91 × 1022 atoms of aluminum. What is the mass of this sample?  [Molar…

A: Given that: Molecules of Al = 2.91×1022 atoms  Molar mass of Al = 26.98 g/mol  1 mol = 6.023×1023…

Q: 127: An iron ore contains 38% Fe203 by mass. What is the maximum mass of iron that can be recovered…

A: 127. Given information, An iron re contains 38% Fe2O3 by mass Mass of iron ore = 10.0 kg

Q: The mass of an average neon atom is 20.2 atomic mass units. One atomic mass unit is equal to…

A: The term atomic mass unit can be defined as the unit of mass which is used to express the atomic or…

Q: Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are…

A: Mass percent :-  The mass of a component in grams present in 100 grams mixture of all components is…

Q: Upon decomposition, one sample of magnesium fluoride produced 2.55 kg of magnesium and 3.99 kg of…

A: Given information, Magnesium is produced from the first sample is 2.55 kg. Fluorine is produced from…

Q: A sample of ethyl mercaptan weighing 3.17 g contains 1.46 g of sulfur.  What mass percentage of this…

A: Given Mass of sample = 3.17 g Given mass of sulfur in it = 1.46 g We need to determine % of sulfur…

Q: A mixture of 197.1 g of P and 203.6 g of O, reacts completely to form P.0, and P,010. Find the…

A: Using mole  concept  easily determine how much reactant used and how much product is formed .

Q: 13) If you measured a mass of 245 g of Iron, you would have atoms Fe. * O 4.39 O 2.64e24 O 8.24e27 O…

A: To calculate the number of atoms or molecules of an element we must have the number of moles of that…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: Given : Density of silica = 2.20 g/cm3  And diameter of grain of sand = 0.455 mm

Q: A compound composed of tin (Sn) and oxygen (O) weighs 8.42 g. Decomposition of the compound produced…

A: mass of O = 8.42-6.63                    = 1.79 g

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: 19. A certain sample of dichlorine heptoxide consists of 4200 oxygen atoms combined with chlorine…

A: According to the given data the sample is dichlorine heptoxide. The sample consists of a total of…

Q: 2. What number of gold atoms are in one mole of gold atoms? A 196.97 ) B 6.022 x 10²3 C 79 ) D 1.66…

A: Given,  The number of gold atoms in one mole of gold atoms is:

Q: A 1.98 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 2.71 x 1022…

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Q: Determine the mass in grams of 5.66 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given,

Q: Upon decomposition, one sample of magnesium fluoride produces 1.65 kg of magnesium and 2.57 kg of…

A: The amount of magnesium produced on the decomposition of sample (I) of MgF2 is 1.65 kg. The amount…

Q: Two pure samples of atoms, labeled A and B, contain titanium (Ti) atoms and carbon (C) atoms,…

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Q: A student used a piece of aluminum that had a mass of 2.583 grams, and treated according to the same…

A: Given:Mass of Al= 2.583 gramsChemical equation:2 Al(s) + 2 KOH(aq) + 4 H2SO4(aq) + 22 H2O(l) → 2 KAl…

Q: Did you ever want to know what you're made of? The table below shows the elemental break down of the…

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Q: A copper wire weighs 1.312 g is 2.15 mm in diameter and 40.5 mm long. The atomic mass of copper is…

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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.