1. Calculate the number of grams in one mole of CaSO-7H2O ? (Atomic weight Ca-40 ,S=32 ,O=16 ,H=1).

Q: O What is the mass of 0.6 mole of CO2 (in g)? A) 31 B) 7 C) 26 D) 18 E) 37

A: Given: Moles of CO2 = 0.6 mol Standard data: The molar mass of CO2 = 44 g/mol

Q: How many kilograms of NaCl contain 3.49 x 10 ions? There are 2 moles of ions per mole of NaCl, and 1…

A: Given  number of ions of NaCl= 3.49 x 1025 ions molar mass of NaCl = 58.5 g/mol 1 mole  = 6.022 x…

Q: Number of atoms of sulfur in 0.0218 kg of Na2S2O3

A:

Q: Consider a 0.336 gram sample of H20 and determine the hydrogen's mass.

A: given :-  mass of sample of water = 0.336 g  To calculate :-  mass of H in the sample of water

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: • How many moles of Na Cl contain 3.49 x1025 There are ions? Z moles of ions per mele oE Nasl, cund…

A: 1 mole = 6.022×1023 [ Avogadro's number ] Anything which is in the number of 6.022×1023 is said to…

Q: element b forms a chloride BCl3 containing 46.62% chlorine by mass. what is the identity of this…

A: Consider the molecular mass of the compound BCl3 which is formed by the combination of an unknown…

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: How many moles are in 38.9 of Al? Atomic Weight of Al= 26.98

A:

Q: How many moles of SO2 contain 8.02 × 10^21 atoms of oxygen?

A: 1 mole of a substance contains Avogadro's number of atoms. (6.022×1023 atoms ).

Q: 12. If that hamburger contains 3.1 x 10 moles (or 0.000 000 31 moles) of selenium, how many grams of…

A: Given, Moles of selenium = 3.1 × 10-7 moles Note: Atomic mass of selenium = 78.96 g/mol Mass (in…

Q: 5 How many moles of O atoms are there in 1 mole of magnesium sulfate heptahydrate? А. 7 В. 11 С. 4…

A: Given; 1 mole of magnesium sulfate heptahydrate  Number of moles of oxygen atoms = ? Note: Chemical…

Q: Does a mole of Ag (107.9 g) contains the same number of atoms as a mole of Na (22.99g).

A: You have given one mole of both Ag and Na.

Q: The ratio of the mass of O to the mass of N in N20z is 12:7. An- other binary compound of nitrogen…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7 Mass of O in N2O3 = 3x16 amu…

Q: Determine the mass, in grams, of 0.290 moles of I (1 mol of I has a mass of 126.90 g).

A:

Q: ted, how many O A. 623.7 g O B. 415.8 g OC. 2495 g O D. 138.6 g O E. 104.0 g

A: The question is based on Reaction Stoichiometry. We have to calculate Amount of potassium…

Q: H.W.: 1. Calculate the number of grams in one mole of CaSO,7H2O? (Atomic weight Ca-40 S-32 O-16…

A: Given Number of mole = 1 mole  Molar mass of CaSO4.7H2O  = 262 gm/mole  mass = ?

Q: Calculate the number of moles of 5.65*10^15 atoms of  ^3H

A: The SI unit or the measure for the amount of substance is called Mole. “1 mole is equal to Avogadro…

Q: A substance is 77.5% Pb, 4.5% C, and 18.0% O. How many atoms of carbon are there for each atom  of…

A:

Q: How many atoms of carbon are combined with 6.89 moles of hydrogen atoms in a sample of the compound…

A: In ethane C2H6 , 2 moles of carbon are combined with 6 moles of hydrogen.

Q: What is the mass of 0.00210 moles of K2CO3?

A: Given data: Number of moles of K2CO3 = 0.0021  Formula used: Moles=Given massMolar mass

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: 1. Calculate the number of grams in one mole of CASO-7H2O ? (Atomic weight Ca=40 ,S=32 ,O=16 ,H=1 ).…

A:

Q: An unknown element X has the following isotopes: 25X (80.5% abundant) and 27X (19.5% abundant). What…

A: Given, The natural abundance of isotope I, 25X = 80.5 % The natural abundance of isotope II, 27X =…

Q: What mass of Al contains the same mumber of atoms as 3,.0g Pb a 23 g 6.0.014 g c 3.0 g d.0.39 g e…

A: Given : Mass of Pb = 3.0 g Since number of atoms of any element is given by, => Number of atoms =…

Q: 1. Calculate the number of grams in one mole of CaSO,7H2O? (Atomic weight Ca-40 ,S=32 ,0=16 ,H-1).

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

Q: Popol learns in his biology class that human body is approximately 9.5% carbon. How many moles of…

A: Given 9.5% mass percentage. Using this wa can calculate mass of carbon and then moles.  Further…

Q: How many atoms are in 2.50 moles of SO2?

A: Concepts and reason The concept used to solve this problem is based on calculation of number of…

Q: Determine the number of atoms of O in 27.9 moles of Na₂Cr₂O₇

A: Given the number of moles of Na2Cr2O7 =27.9 moleswe are asked to calculate the number of atoms of O…

Q: Element Molar Mass (/ 14.01 16.00 24.31 32.07 55.85 1. The molar mass of sulfur is 32.07 s/mol. This…

A:

Q: -If you had 2.00 x 1024 atoms of Na, how many moles would you have?

A:

Q: w many moles of calcium atoms do you 1021

A: Given, No. of atoms = 6.22×1021 atms To calculate the number of moles of calcium.

Q: 3- How many kinds of hydrogen atoms are there in the following molecules?

A: In the carbon compound the different kinds of hydrogen atoms depends on the type of carbon atoms.…

Q: What mass of cerussite (PbCO3), would contain 35.0 grams of lead?

A:

Q: How many atoms of Pt are present in 2.53 moles of Pt?

A:

Q: Which weighs less, 0.25 mole of xenon atoms or 2.0 moles of carbon atoms?

A: The mass of 0.25 mole of xenon atoms can be calculated as

Q: How many atoms of O there in 24.7 grams of Al(C2H3O2)3?

A: Here structure of the compound is AlC2H3O23 Molar mass of the compound = 27+32×12+1×3+2×16gmol =…

Q: Covert 2.34 x 10^24 molecules of N2 to moles

A:

Q: calcuya te 6011owing (a) ob molecues in 0•250 moles ob NH3 Num ber un

A: According to mole concept, 1 mole of any substance is equal to the Avogadro number (6.022 × 1022)…

Q: What is the average atomic mass of a mystery substance that is 27.5 at a mass of 37g and 72.5% at a…

A: Given: Mass =37 g  Percentage %=27.5 % Mass =38 Percentage % =72.5% Average mass=?

Q: The Avogadro number is defined as A The number of electron in 12g of C-12 substance B The number of…

A: The question is based on the concept of avogadro  number. we have to correctly identify the…

Q: A 0.415 mol sample of MnX2O7 has mass of 85.14g identify X indicating the symbol and not the name of…

A:

Q: 1A 2A 8A Atomic Number 1 E ЗА C 1 W 4A 5A 6A 7A G Zy 6. 4. K V P. Ad 8. 6. 10 11 12 13 14 15 Q U H.…

A: Amount of product formed is defined with the help of Limiting reagent using stoichiometric…

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: Mass of ground pill Volume of KMNO, Moles of KMNO, Moles of Fe2+ Moles of FeSO, • 7H,O Mass of FeSO,…

A: Given: Molarity of KMnO4 = 0.0114809 M Balanced reaction : MnO4− + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4…

Q: 19) Which molecule has a molecular mass of 28.05 amu? H-C A) B) H-CEC-H 20) Determine the molecular…

A: The mass of a molecule of a compound is known as molecular mass  The molecular mass is the sum of…

Q: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

A:

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.