How many Sn atoms are there in a 20.7 gram sample of Sn ?

Q: The density of solid Fe is 7.87 g/cm³. How many atoms are present per cubic centimeter (cm³) of Fe?

A: a)  Density of Fe = 7.87 g/cm3  1 mol Fe = 56.0 g/mol  1 mol Fe = 6.023 × 1023 Fe atoms    The…

Q: How many titanium atoms are in a pure titanium bicycleframe with a mass of 1.28 kg?

A: The number of titanium atoms is in a pure titanium bicycle frame with a mass of 1.28 kg has to be…

Q: 250 g of an alloy contains 52 wt% tin (Sn) and 48 wt% lead (Pb). The atomic weight of Sn is 118.7…

A: It is defined as amount of solute ( in grams) present in 100 g of solution is called " mass…

Q: How many moles can .017 grams of magnesium produce?

A: Given that : Mass of magnesium = 0.017 g We have to calculate the number of moles in 0.017 g of…

Q: How many Cr atoms are there in a 50.1 gram sample of Cr ? atoms

A: Mass of sample Cr = 50.1 g  Number of Cr atoms = ?  Molar mass of Cr atom = 52.0 g/mol  As we know…

Q: 22 11. Find the mass in grams of 2.54 x 10 molecules of H,SO,.

A: Number of molecules of H2SO4 = 2.54 × 1022 molecules. Mass of H2SO4 (in grams ) = ?

Q: Consider the hypothetical reaction of the real-life element iron and the fictional element vibranium…

A: Solution:- Given:- Reaction > Fe + Vi →Fe4Vi3  Balanced chemical equation:- 4Fe + 3Vi → Fe4Vi3…

Q: How many atoms of vanadium are in 1.28 grams of vanadium ?

A: 1 mole of vanadium contains Avogadro’s number of atoms. The number of mole of 1.28 g of vanadium…

Q: Determine the number of atoms in a 1.00 mg sample of Carbon-14?

A:

Q: Calculate the % by mass C in C4H8O

A: % by mass of C in C4H8O = (mass of C/mass of C4H8O) × 100%

Q: A 0.214 gram sample of Magnesium (atomic weight = 24.31 g/mol) is oxidized in a crucible. The final…

A:

Q: 9.21 x10^19 molecules of hydrogen gas,(H2) are equal to how many grams of hydrogen gas?

A: Number of molecules = 9.21 × 1019 molecules Avogadro’s constant = 6.022 × 1023 molecules Numbre of…

Q: What can happen as nuclei decay? A.The atom will donate protons and neutrons to another…

A: Nuclear decay is the process in which unstable nuclei is converted into stable nuclei by releasing…

Q: Silversmiths are warned to limit their exposure to silver in the air to 1×10*8 g Ag/L of air in a 40…

A:

Q: What is the mass in grams of 9.76 × 1012 atoms of naturally occurring potassium?

A: mass = 6.32 x 10-10 g

Q: A sample of Fe_20_3 (MW= 159.69 g/mol) has a mass of 0.277 g. What is the mass of Fe in the sample?…

A: Molar mass of compound is individual sum of atomic mass of each atoms present in compound

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: For a compound consisting of two components A and B, mass% of A abd B are related to each other as…

Q: What is the mass in grams of 2.00 × 105 atoms of naturally occurring neon?

A: Given : Number of atoms of neon i.e Ne = 2.00 X 105 atoms.

Q: How many Si atoms are there in a 63.4 gram sample of elemental Si? atoms

A: Given the mass of the Si sample = 63.4 g  We have to find the number of Si atoms.  We can proceed…

Q: Matter is defined as ....... إجابتك Felite is إجابتك

A: 2. The term matter refers to anything that occupies space and has mass—in other words, the “stuff”…

Q: A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and height…

A: Density of a substance is given by the ratio of mass to its volume. Density = MassVolume Volume of a…

Q: Determine the mass (in grams) of aluminum present in 1.08 grams of Al2S3?

A: Molar mass of the elements is equal to the sum of the atomic masses of all the elements. Molar mass…

Q: A modern penny weighs 2.5 g but is only 2.52% copper by mass. Calculate the number of cooper atoms…

A: given values :  mass of penny = 2.5 g mass % of copper = 2.52% formula of mass % : mass % = mass of…

Q: ny atoms a

A: The number of moles is determined as the mass of the substance upon its molar mass. The number of…

Q: How many Kr atoms are there in a 56.7 gram sample of Kr ?

A:

Q: How many moles of Cs are contained in 595 kg of Cs?

A: Here we have to calculate how many moles of Cs are contained in 595 kg of Cs

Q: ny atoms c

A:

Q: How many V atoms are there in a 97.9 gram sample of V ? atoms

A: Mass of sample = 97.9 grams.  Number of atoms of V sample = ?

Q: What is the mass, in grams, of each elemental sample? 0.0355 mol Ba

A:

Q: 2. The volume of the nucleus of a carbon atom is about 9.9 x 10-39 mL. The molar mass of carbon…

A: Given: Volume of carbon nucleus atom = 9.9 × 10-39 mL. And molar mass of a carbon atom = 12.00…

Q: What mass (in kg) does 5.84 moles of titanium (Ti) have?

A: Given, The number of moles is 5.84 moles.Molar mass of titanium is 47.867g/mol.The equation is:

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: What is the mass, in grams, of each elemental sample?1.3 mol W

A: Molar mass of any compound can be expounded as mass of 1 mole of a substance. One mole indicates…

Q: The mass ratio of sodium to chlorine is sodium chloride is 0.649:1.  A sample of sodium chloride…

A: 2NaCl ------> 2 Na + Cl2 Mass ratio of sodium to chlorine is sodium chloride is 0.649:1. Sample…

Q: how many atoms per particle in sulfur(s8)?

A: Atomic mass of sulfur = 32g Molecular mass of S8 =8×32=256g

Q: (2) (3) If an atom with 38 protons undergoes B-decay, the species formed will have, (A) 37 (B) 38…

A: The nucleus undergoes these emission reactions due to more number of neutrons than protons in the…

Q: What is the average mass, in grams, of one Zn atom?

A: Given :- Number of atoms of Zn = 1 atom  To calculate :-  Average molar mass of single atom of Zn…

Q: Erbium (Er) is element 68 on the periodic table. A sample contains 2.58×1025 atoms of Er. Calculate…

A:

Q: Calculate the number of atoms in sample. 97.552 g Sn

A: We know that the 1 mole of a substance consists of 6.023*1023 number of atoms. (Mass of one mole of…

Q: How many moles of titanium are present in 124 g of titanium?

A:

Q: The isotope of plutonium "Pu is used to make thermoelectric power sources for spacecraft. Suppose…

A:

Q: How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.34 kg ?

A: Given that mass of titanium bicycle frame = 1.34 kg = 1340 g Molar mass of titanium (Ti) = 47.867…

Q: A 21.37 gram sample of an unknow element contains 0.3267 moles what is the identity of the element

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Q: atomic mass of an element related to its molar mass?

A:

Q: In the following How many Fe atoms How many O atoms How many S atoms Fez(SO4)a

A: The number of atoms present in Fe2(SO4)3 has to be given.

Q: Calculate the mass of antimony(III) lodide, Sblg, that can be produced by the reaction of 143 g of…

A:

Q: How many moles of carbon are there in a diamond weighing 2.11g

A: Mole is defined as a unit of measurement for the amount of substance in the International System of…

Q: Elements in group 7A are considered

A: There are total seven periods and eighteen groups in the modern periodic table where all the…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.