Hubei China, Ten hospitals were used to do a trial for Remdesivir drugs. Patients age 18 and above was admitted with a laboratory confirmed SARS COV 2 infection. Patients were assigned to intake 0.20 g of Redmesivir on the first day and followed by 0.10 g on the following days. How much molecules of Remdesivir was used on the first day? A. 1998 x 1018 molecules of C27H35N6O8P B. 1998 x 1019 molecules of C27H35N6O8P C. 1998 x 1020 molecules of C27H35N6O8P D. 1998 x 1021 molecules of C27H35N6O8P

Q: . Consider the reaction. Pb(SO4)2+2Zn⟶2ZnSO4+PbPb(SO4)2+2Zn⟶2ZnSO4+Pb If 0.422 mol0.422 mol of zinc…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: a) Patients who have a zinc deficiency can take tablets consisting of a hydrated zinc sulfate,…

A: #(a): Mass of hydrated zinc sulfate tablet, ZnSO4.XH2O = 5.073 g  Mass of anhydrous sulfate,…

Q: 3.150 The compound 2,3-dimercaptopropanol(HSCH2CHSHCH2OH), commonly known as BritishAnti-Lewisite…

A: Given: Molecular formula of 2,3-dimercaptopropanol or BAL = HSCH2CHSHCH2OH = C3H8OS2 Molecular mass…

Q: silver sulfadiazine burn- treating cream creates a barrier against baterial invasion and realeases…

A:

Q: The active ingredient in Tum is calcium carbonate. a). What is the chemical formula of calcium…

A: A.Chemical formula of calcium carbonate is CaCO3. B. Molar mass of calcium carbonate is 100g/mol.…

Q: 2. Fermentation is a complex chemical process of wine making in which glucose is converted into…

A: Given- balanced Chemical equation -    C6H12O6 -------> 2C2H5OH + 2CO2    Mass of glucose = 500.4…

Q: Iso-pentyl acetate (C;H1402), the compound responsible for the scent of bananas, can be produced…

A: Given:  grams of iso-pentyl acetate produced = 1 × 10-6  g  Atomic mass of C = 12.011 g/mol  Atomic…

Q: A major component of gasoline is octane (C3H18). When octane is burned in air, it chemically reacts…

A: The balanced reaction for burning of octane is  2 C8H18 + 25 O2 -----> 16 CO2 + 18 H2O Hence from…

Q: 3.102 Consider the reaction 2A + B C (a) In the diagram here that represents the reaction,…

A: From the balanced equation of reaction given, 2 molecules of A requires 1 molecule of B to form 1…

Q: A sunscreen preparation contains 2.50% by mass benzyl salicylate (2.50g benzyl salicylate/100g…

A: Given : weight of benzyl salicylate = 2.50 g in 100 g sunscreen  And one tube contains 4 ounces of…

Q: A sunscreen preparation contains 2.50% benzyl salicylate by mass. If a tube contains 4.0 oz of…

A: 1 tube of sunscreen contains = 4oz Mass of benzyl salicylate = 2.5 % by mass

Q: The molecular formula of allicin, the compound responsible for the characteristic smell of garlic,…

A:

Q: 8. Consider the reaction: MnO2 + 4HCI → MnCl2 + Cl2 + 2H20 If 0.86 mole of Mn02 and 48.2 g of HCl…

A: 1- Calculate the moles of HCl first :  moles of HCl = ( mass / molar mass of HCl )  moles of HCl = (…

Q: Anhydrous CuSO4 can be used to remove water (an impurity) from gasoline. When the CuSO4 absorbs the…

A: Reaction corresponding to absorption of water by copper sulfate is: CuSO4+5H2O→CuSO4.5H2O Hence, 1…

Q: The green color of leaves is due to thepresence of chlorophyll, C 55 H 72 O 5 N 4 Mg. A fresh…

A: Chlorophyll is a green pigment that absorbs sunlight and helps plants absorbs energy and utilize…

Q: DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction. 2…

A: The given reaction is as follows: 2C6H5Cl        +   C2HOCl3  →   C14H9Cl5  +  H2OChlorobenzene…

Q: Part 2: The Concept of Limiting Reactant 2. Water is formed by burning H2 (g) in the presence of O2…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Nitrogen dioxide reacts with itself under extreme temperatures and pressures, forming dinitrogen…

A: Explained as follows

Q: 2C2H2(g)+5O2(g)⟶Δ4CO2(g)+2H2O(g) How many moles of C2H2 are required to produce 0.63 mol of H2O?

A: Given reaction :-   2C2H2(g) + 5O2(g) ⟶ 4CO2(g) + 2H2O(g) reaction is balanced.

Q: DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction: 2C6…

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

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: a) Calculate the molar mass of sucrose, C12H22O11.(b) How many moles of sucrose are present in:…

A: a) Molecular formula of sucrose is C12H22O11. Molar mass of carbon is 12.0107 g.mol-1. Molar mass of…

Q: Solid diiodine pentoxide is used in respirators to remove carbon monoxide from air. The reaction…

A: We have to predict the mass of CO  as well as mass of I2 .

Q: Benzene (C6H6) is a liquid with a density of 0.874 g cm-3. It reacts with oxygen to give carbon…

A: Given: Volume of benzene reacted = 21.3 cm3 Density of benzene = 0.874 g cm-3 We have to calculate…

Q: Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means…

A:

Q: 1. Over the years, the thermite reaction has been used for welding railroad rails, in incendiary…

A:

Q: Glucose (C6H12O6) reacts with excess oxygen to produce 150 g water. ?^?KE?^ + ?E → ??E + ?E? a)…

A: Glucose reacts with water to produce carbon dioxide and water as per the reaction  C6H12O6 + O2…

Q: 2. DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction:…

A:

Q: 1. The combustion of a sample of butane, C4H10 (lighter fluid), produced 3.75 moles of water. 2C4H10…

A: Consider the given balanced equation is as follows; 2 C4H10   +  13 O2   →    8 CO2   +   10 H2O…

Q: TCDD, also called dioxin (C12H4Cl4O2, molar mass 322.0 g/mol), is a potent poison. The average…

A:

Q: 11. In the equation:  C6H15N4O6 + N2O  C5H11N4O6 + CH4N2O   A. Which compounds are the reactants?…

A:

Q: The combustion of propane (C3H8) produces CO2 and H2O: C3H8 (g) + 02 (g) → CO2 (g) + H2O (g) The…

A: While calculating for a number of moles of product, we should have a balanced chemical equation…

Q: Silver sulfadiazine burn-treating cream creates a barrier against bacterial invasion and releases…

A: GIven: The mass of Ag2O (Silver oxide) is 25.3 g The mass of C10H10N4SO2 is 50.6 g The molar mass of…

Q: Methyl salicylate (oil of wintergreen) is prepared by heating salicylic acid, C, H O3, with…

A: Salicylic acid reacts with methanol and forms methyl salicylate. This is an esterification reaction.…

Q: A pharmacist prepares an antiulcer medicine by mixing 286 g Na2CO3 with water, adding 150 g glycine…

A: Given information, 286 g Na2CO3 with water 150 g glycine (C2H5NO2)

Q: 2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the…

A: Given:  The chemical formula is :  Fe3O4 sol a)   molar mass  =  3 Fe + 4 O =  (3 x 55.84)  +  (4 x…

Q: H2SO4(aq) + Pb(C2H302)2(aq) --> PbSO4(s) + 2 HC2H302(aq) Solutions of sulfuric acid and lead (II)…

A: The balanced reaction is – H2SO4 aq+ PbC2H3O2 aq→PbSO4 aq+2HC2H3O2aq

Q: A sample of 10.5g nitrogen reacts with 20.2 grams of hydrogen to produce ammonia.  3H2(g) + N2(g)…

A: Limiting reagent determination  find ratio of mol and stoichiometric coefficient, which will have…

Q: The following reaction occurs and 9.81 × 102º CO, molecules are produced. → CO2(g) + H,O(1)…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves…

Q: The gemstone tanzanite was first discovered in Tanzania in 1967. Like other gemstones, it contains…

A:

Q: 2. Photosynthesis is the process through which water and carbon dioxide are converted to sugar and…

A: Photosynthesis is a mechanism used by plants and other animals to transform light energy into…

Q: - Consider the reaction: 4Al(s) + 302(9) (a) If 9.00 moles of aluminum react with an excess of…

A:

Q: The compound diborane, B2H, was 9nce proposed for use as a rocket propellane. It can be produced by…

A: The given reaction is- 3LiBH4+BF3→2B2H6+3LiF The mass of LiBH4 = 24.6 g The molar mass of LiBH4 =…

Q: 4 S(s) +6 O2(g)→ 4 SO3(g) AH°xn = ? %3D Given: SO2(g) → S(s) + O2(g) ΔΗ rxn +296.8 kJ AH°ryn =…

A:

Q: Methyl salicylate (oil of wintergreen) is prepared by heating salicylic acid, C7 Hg O3, with…

A:

Q: The complete combustion of octane, C8H18, a component of gasoline, proceeds as is shown below. 2…

A:

Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of one mole of molecules of a substance is called…

Q: Nitroglycerin (C3H5N309 ) is a powerful explosive. Its decomposition may be represented by 4C3H5N309…

A: a mole of a substance will always weigh its molar mass at STP   moles =mass takenmolar mass

Q: A 4.04-g sample of methane is burned completely in air. (a) How many moles of H2O are formed? M (b)…

A: Mass of methane burned completely = 4.04 grams.  a) Number of moles of H2O produced = ?  b) Number…

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.