he compound cisplatin is a chemotherapy drug. The chemical formula of cisplatin is PtCl2(NH3)2. How many hydrogen atoms are present in 81.8 mg of cisplatin? (Avogadro's number is N0 = 6.022e+23) a) There are 2.24e+21 hydrogen atoms present. b) There are 9.85e+26 hydrogen atoms present. c) There are 9.85e+20 hydrogen atoms present. d) There are 1.64e+20 hydrogen atoms present. e) There are 9.85e+23 hydrogen atoms present.

Q: How many atoms or ions of each element are in 157.3 g of the following substances? (a) H₂ x 1025 H…

A:

Q: Naturally occurring chlorine is 75.78% 35Cl (atomic mass 34.969 u) and 24.22% 37Cl (atomic mass…

A: Given :  Atomic mass of lighter isotope i.e 35Cl (A1) = 34.969 u  Percentage abundance of lighter…

Q: The mass of an organic compound was found to be 58.053 86 by mass spectrometry. Is the sample C₂HN₂,…

A: The solution is given below -

Q: A) What is the formula of magnesium melonite dihydrate?  B) What is the mass % of melon in copper…

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Q: (a) A compound MX2 is formed from the M²+ and X¯ ions. The compound contains 86.8% of X by mass. In…

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Q: OC) 5.06 x 1024 How many atoms of carbon are in 23.1 g of caffeine (C8H10N4O2)? A) 8.00 B) 7.16 x…

A: Formula of caffeine = C8H10N4O2  Mass of caffeine = 23.1 g  Molar mass of caffeine = 8(molar mass of…

Q: An unknown compound contains nickel, phosphorus, and oxygen. When analyzed, a 100.0 g sample was…

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Q: 1) Avogadro's Number, Moles, and Molar Mass a) How many xenon atoms are in 1.248 mol of xenon? b)…

A: The objective of the question is to apply the concepts of Avogadro's number, moles, and molar mass…

Q: Determine the molecular or formula mass of each of the following compounds. (For this exercise,…

A: When the masses of all the atoms present in a molecule are added, the value obtained is referred to…

Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: Given the following reaction,  I2O5(g) + CO(g) --> CO2 (g) + I2(g)  a) If 50 g of iodine(V) oxide…

A: An equation representing the reaction between I2O5 and CO that yields I2 and CO2, for which three…

Q: 1. Consider the reaction 1,0g)+5CO(g) 5C0g)+16) a) 80.0 grams of iodine(V) oxide, I,O, reacts with…

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Q: The molecular formula for benzene is C6H6. What is its empirical formula?

A: We have to predict the empirical formula of benzene.

Q: - Why do we use the "mole" in chemistry. How does it relate to the periodic table? a) What is the…

A: The relationship between mole and mass is as follows:       Mole = Mass Molar mass ⇒Mass =…

Q: A thyroid condition called goiter can be treated by increasing iodine in the diet. Iodized salt…

A: The topic of the question relates to the use of iodine in the treatment of goiter, a condition…

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: 9. Which of the following has the greatest number of particles? (A) 9.012 g of Be (B) 1 mole of Na…

A: The no of moles is the ratio of given mass to that of molar mass of that substance.  For more than…

Q: How many Fe(NO3)3 formula units are there in 351.0 g Fe(NO3)3 ?

A:

Q: Explain why one of the carbocations below is much more stable than the other. Illustrate with an…

A: Carbocations are positively charged reactive intermediates formed during a reaction. They only have…

Q: A 3.87g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.30x1022 N2O…

A: a) 1 molecule of N2O contains 2 nitrogen atoms, Hence, 5.30 ×1022 N N2O molecules will contain…

Q: 0.93 g sample of NaCr(SO4)2.XH20 was heated in a crucible to get a constant mass. If the mass of the…

A: In this question, we want to determine the value of x in the given Compound. How we will determine,…

Q: 3. In the reaction Fe₂O3 + CO 2Fe + 3CO2, fifteen grams of Fe₂O3 was allowed to react with CO. How…

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Q: A) How many grams of Mgl, is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

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Q: How many molecules are there in 1,975.0 g of table sugar, sucrose, C12H22011?

A: Given,  1975 g of table sugar, C12H22O11

Q: CHEMWORK With the advent of techniques such as scanning tunneling microscopy, it is now possible to…

A: The advent of advanced techniques such as scanning tunneling microscopy has revolutionized the field…

Q: Mobic is a commercial drug that helps to treat arthritis. It has an empirical formula of…

A: The given value of molar mass of drug is 1406 g mol-1. The given empirical formula is C14H13N3O4S2.…

Q: A.)If 4.76  mL of seawater contains about 5.46×10-14  moles of gold, how many atoms of gold are in…

A: Given, A.)If 4.76  mL of seawater contains about 5.46×10-14  moles of gold, number atoms of gold are…

Q: What is the molecular mass in amu of copper(I) sulfate? Use these values from the periodic table…

A: The answer to the following question is given as:

Q: Octane (C8H18) is a primary component of gasoline. If you fill a beaker with 2.00 moles of octane,…

A:

Q: molecules

A:

Q: In a chemical reaction, using 1 mol AgBr can get 1 mol NHĄB . If there is 4.15 g AgBr , we can get…

A: Given : In a reaction, 1 mole of AgBr is capable of producing 1 mole of NH4Br. And mass of AgBr…

Q: 5.) Ethylene glycol is a coolant widely used in automobiles. If its molecular formula is C2H6O2, how…

A: Number of moles is defined as the amount of the substance divided by the molecular weight of the…

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

A: Number of gold atoms = 2.5 ×1020  Atomic mass of gold = 197 g/mol

Q: How many ions of nitrate (NO3-) are present in 14.33 g of iron (III) nitrate (Fe(NO3)3)?

A:

Q: A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields…

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Q: A hydrate of copper(II) chloride has the following formula: CuCl2.xH2O. The water in a 3.41-g sample…

A: When the molecules exist with the bonding of the specific number of water molecules in their lattice…

Q: 1. Sucrose (C12H22O11), commonly known as “table sugar”, is a carbohydrate formed from the…

A: Sucrose has a molecular formula of C12H22O11 We are asked the percentage of each element

Q: 5. How many atoms in (use Avogadro's number. 6.02X1023 atomic (a) 2.82 mol of Zn (b) 1.5 mol of Cu…

A: The objective of the question is to calculate the number of atoms in given moles of substances, find…

Q: How many moles of arsenic is 2.345 x 1019 atoms? How many moles of carbon are in a 1.00 carat…

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Q: The molecular formula of isoquinoline, C9H7N, which is used in the synthesis of dyes. Its molar mass…

A: Molecule formula of isoquinoline is C9H7N , it's molar mass?

Q: What is the molar mass for the compound Orchidium Nitrate - Or(NO3)2? Orchidium has an average…

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Q: 4.) How many moles are present in 9.15 x 1021 molecules of CO2? (type the final answer with a…

A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".