Where do you find the information needed to determine molecular weight? A. periodic table, B. chemical formula C. chemical equation D. periodic table and chemical formula

Q: Question 7 17.3 g of oxygen contains O a. none of the above O b.6.51 x 1023 oxygen atoms oxygen…

A: Molecules are made up of two or more than two atoms.We have been asked to choose one option from…

Q: Match the correct answer(s). A gaeous atomic element A. Helium * Polyatomic ion B. sulfur dioxide *…

A: Polyatomic ion : The ion in which more than one  atoms is present, is called as polyatomic ion.

Q: Data Table 1: Binary Molecular and lonic Compound Names Compound Name #3 Formula Molecular or lonic…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A sample of a salt was found to contain 2.83 g of calcium and 2.68 g of fluorine. a) Calculate the…

A: Given: Mass of calcium, Ca = 2.83 g. And mass of fluorine, F = 2.68 g.

Q: ne number of atoms

A:

Q: . Which element comprising calcium nitrate has the least percentage by mass? RSK. Calcium KRS.…

A: Chemical formula of calcium nitrate = Ca(NO3)2  1 mol Ca(NO3)2 has 1 mol Ca, 2 mol N amd 6 mol O

Q: 4. Determine the number of atoms present in 7.85 moles of carbon. C

A:

Q: 47. If a sample of carbon tetrafluoride contains 15.7 g of fluorine, how many grams of carbon does…

A:

Q: Calculate the number of atoms in each of the following masses: a. 54.0 g of aluminum ans: 1.21 1024…

A:

Q: Determine the number of moles of hydrogen atoms in each sample.a. 0.0885 mol C4H10 b. 1.3 mol CH4c.…

A:

Q: Determine the number of moles of H in each sample. 35.6 mol C10H22 to mol

A: Given,  The moles of C10H22 = 35.6 mol The number of moles of H is:

Q: Determine the number of atoms in 30.0 g of S.

A: The given mass of S is 30.0 g The molar mass of S is 32 g The conversion of mass to moles can be…

Q: What is the "law of conservation of mass" and explain how it relates to why must chemical equations…

A: The ‘law of conservation of mass’ says that mass in an isolated system is neither created nor…

Q: How many moles of neon are contained in the following volumes at Standard Temperature and Pressure…

A: One mole of ideal gas will occupy volume of 22.4 liters at STP   a)  44.00 L so number of moles of…

Q: A 24.8 g sample of water contains how many water molecules?

A: Molar mass of water = 18 gWe have 24.8 g water no of moles of water = 24.8 g18g/mol…

Q: How many atoms are in a 10.0 g sample of titanium (Ti)? O a. 5.06 x 1026 O b. 1.26 x 1023 C. 2.86 x…

A:

Q: n the Dehydration of Inorganic Salt Hydrate, the weight of the dehydrated Epsom salt is 0.258 g and…

A: Given : Weight of dehydrated epson salt = 0.258g Mass of water = 0.26g

Q: You have a sample that contain 5 moles of zinc. A)what is the mass of zinc in the sample?

A: moles of Zn= 5 mol mass of Zn=?

Q: how many carbon atoms are, hyrdrogen atoms, oxygen atoms, and nitrogen atoms are in this molecule?

A: The molecule given in the question is a hydrocarbon compound which has heteroatoms (O and N).…

Q: One mole of oxygen molecule (02) contains how many atoms of oxygen? a. 6.022 × 1023 O b. 1,6021 ×…

A: We have to tell the no. Of oxygen atom in 1 mole

Q: Using the average atomic masses, calculate how many moles of each substance the following mas a.…

A: mass of Si = 4.60 g mass of AuCl3 =2.60 mg = 0.00260 g mass of S = 1.95 kg = 1950 g

Q: How many hydrogen atoms are in the molecule below?

A:

Q: Calculate the mass of each element.a. 5.22 mol of He              c. 2.22 mol of Tib. 0.0455 mol of…

A: The number of moles can be calculated using the mass of a substance as its mass divided by the molar…

Q: Select all the statements that are TRUE regarding Molecular Formula. SELECT ALL THAT APPLY. A.…

A: Formula weight is the total mass of all atoms present in the formula of the Molecule or compound ,it…

Q: mass of PCI,:

A:

Q: Calculate empirical and molecular formulas Classify substances as atomic elements, molecular…

A: Let's consider glucose molecule, Molecular formula is representation of exact number of that…

Q: When table salt is dissolved in water, in conducts electricity when tested in an electrical…

A: When we dissolved table salt that is NaCl in water, it gets dissociated into ions Na+  and Cl-. When…

Q: this question. What is the mass of a dioxygen difluoride molecule ? grams

A: Mass of a molecule can be defined as the sum of masses of atoms present in that molecule. It is…

Q: atoms

A:

Q: 1. How many molecules of oxygen are in 50.0 g of oxygen?

A:

Q: Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many…

A: mass of aspirin = 240. mg = 0.240 gMolecular formula of aspirin: C9H8O4Note: molar mass of aspirin…

Q: Which of the following compounds contains the largest number of atoms?  a.4.0 mol of H2S b.3.0 mol…

A: The largest number of atoms present in which compound can be calculated as,

Q: What is the mass of a sulfur hexafluoride molecule ? grams

A: Molecular formula for Sulphur hexafluoride is SF6

Q: How do I determine the number of atoms for a given element that are in a compound?

A: Some rules should be followed to calculate Number of elements in a compound.

Q: How many sulfur atoms are in 3.6 x1024 aluminum sulfate molecules?   A. 6   B. 18 NA   C. 4 NA…

A: Given that: Molecules of aluminium sulfate = 3.6×1024 atoms Molar mass of Al2(SO4)3 = 342.2 g/mol

Q: Consider 1.00 g of Copper (Cu) metal. How many Cu moles are present in this sample? How many Cu…

A: Since moles of element = mass of element / Atomic mass of element  Atomic mass of Cu = 63.5 g/mol…

Q: 10. Use what you have just learned about chemical formulas to identify the following as element…

A: (a) Br2 -  It is an element, because it has only one type of constituent atoms of bromine. Here two…

Q: Determine the number of neon atoms in a lamp that contains 20.17 g of neon gas sample.

A: Given mass of Neon gas = 20.17 g Number of atoms in given mass of Neon = ?

Q: You have 53 carbon atoms. What is the mass? Which units should you use g/mol or amu? a. 686.58 amu…

A: Answer: No option is correct. The correct answer is 636.53 amu We should use amu unit instead of…

Q: 31. Write the formula for the compound formed when these elements are reacted a. Al and S b. Mg and…

A: a.) Al2S3  b) Mg3P2  c) Na3N

Q: The formula weight of ammonium sulfate (NH4)2SO4  is __________ amu.   a 264.32   b 116.05   c…

A: The formula weight of Ammonium sulfate is calculated as follows: =2×Formula weight of N atom +…

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.