Calculate the mass, in grams, of each sample.a. 1.1 * 1023 gold atomsb. 2.82 * 1022 helium atomsc. 1.8 * 1023 lead atomsd. 7.9 * 1021 uranium atoms

Q: Find the mass of 1 molecule of NaH in gram. O a. 3.98 x10-23 O b. 12 O c. 23.99 O d. 3.98 x1023

A: Molar mass amount(1 mole) of any compound contains Avogadro number6.022×1023 of molecules. Molar…

Q: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: sample

A:

Q: Calculate the mass, in grams, of each sample. a. 1.1 x 10 gold atoms b. 2.82 x 102 helium atoms c.…

A: Calculate the mass in grams of each sample  (a) 1.1 x 1023 gold atoms (b) 2.82 x 1023  helium atoms…

Q: Which of the following mixtures can be separated by handpicking? *

A: Seperation techniques :  Few common methods of seperating substsances (or) mixtures are  1.…

Q: Which of the following samples of gases contains the greatest number of atoms? (Relative atomic…

A: 4th option is correct that is 13.0 g of C2H6

Q: olecule in units

A: Dear student I have given answer to your question in the image format.

Q: Suggest how the components of each mixture can be separated. a. Salt and Sulfur b. Copper and Zinc

A: Solution The mixture of salt and sulphur is a mixture of heterogeneous mixture.They can be seperated…

Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: 23. a. Calculate the average mass in grams of an individual atom of silver. b. Calculate the mass in…

A: 1 mole Ag atoms = 6.023 × 1023 Ag atoms. mass = mole X molar mass for elements, atomic mass = molar…

Q: . What is the mass, in grams, of each of the following? a. 2.3*10^-3 mol Sb b. 3.59*10^-2 mol Ba…

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

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

A:

Q: There are 1.5 x 1022 atoms in A. 0.025 mol of gold B. 4.0 g of helium C. 2.5 x 1044 moles of copper…

A: Number of atoms = moles of element X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: You have a 125-g sample of one of these substances. You determine that it is made of 16.7 g H, 75.0…

A: A chemical compound often comprises the same elements in very same compositions by mass, according…

Q: How many gold (Au) atoms are there in a 10. g sample of that is 50% Au by mass?  a. 6.2 x 1022 b.…

A:

Q: For number 5 to 7, consider the following reaction. The complete combustion of methane, CH., can be…

A: CH4 (g)+ 2O2 (g)-------> CO2 (g)+ 2H2O (g) Number of moles = mass ÷ (molecular mass)

Q: . The Law of Conservation of Mass proves that A. the number of atoms in a chemical reaction does…

A: Given: Law of conservation of mass.

Q: A magnesium ion (Mg2*) has electrons. a. 9 b. 10 С. 12 d. 13

A: The number of electrons on a neutral atom can be determined as follows: The number of electrons on…

Q: sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000 g sample of the…

A:

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: What mass of phosphorus is present in 25 g P4S3? A. 14g B. 4.5g C. 11g D. 3.2g E. 100g

A: Since the Atomic mass of P = 31 g/mol and Atomic mass of S = 32 g/mol Hence molar mass of P4S3 =…

Q: Determine the mass of sodium in 15.5 g of NaNO3.   a. 17.4 g   b. 0.298 g   c. 4.19 g   d.…

A: Given that,mass of NaNO3 = 15.5 g Molar mass of NaNO3 = 84.9947 g/mol moles of NaNO3 = (mass of…

Q: 9- An unknown compound is composed of C, H, and O. A 0.1005 g sample of this compound is combusted,…

A: We have to predict the empirical formula of compound 0.1005 g sample, produces 0.2829 g of CO2,…

Q: Determine the mass percentage of F in C6H11OF3. A. 36.50% B. 37.33% C. 39.54% D. 40.67% E. none of…

A: Mass of one mole of Carbon, Hydrogen, Oxygen, and Fluorine are calculated as follows,

Q: Classify each element as atomic or molecular.a. neon b. fluorine c. potassium d. nitrogen

A: a. The elements that have single atoms as their naturally existing basic units are known as atomic…

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given  Wt. If iron = 0.210 g  Wt. Of iron oxide = 0.341 g  Atomic weight of iron = 55.85 g/mol…

Q: A sample of iron sulfide is found with the formula Feo.87S. VWhat percentage of the iron ions are…

A: Co-ordination compounds are formed when the metal ion is bonded to the ligand which donates its…

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: Calculate the mass of Na in 80.0 g NaCl. A. 31.5 g B. 6.2 g C. 40.0 g D. 1.9 g

A: molar mass of NaCl  =mass of Na +mass of Cl                                   =23+35.5…

Q: 5. Compound X is composed of 52.2% carbon, 13.0% hydrogen, and the rest oxygen, by mass. The…

A: Compound X contain C= 52.2%                                    H= 13%…

Q: A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of…

A: Given that, Mass of evaporating dish, w1 = 38.478 g Mass of evaporating dish + original sample, w2 =…

Q: Which has the greater number of particles, 3.011x1023 N2 molecules or 14.01 g N2 molecules? a.…

A:

Q: 6. A 15.00 g sample of an oxide of nitrogen is heated and decomposes to nitrogen and oxygen. All the…

A:

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.