How many molecules of silicon tetrahydride are present in 3.82 grams of the substance? to the nearest thousandths

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Mass percent expresses the solute concentration in any mixture. The division of weight of dissolved…

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: We know that   To find the percentage by mass of each element in the given compounds we have to use…

Q: Heart disease is linked to high blood cholesterollevels. What is the percent composition of…

A: Percentage composition of each element defines the amount of that particular element present with…

Q: How many molecules are contained in 7.35 mol NH3 ?

A: Here, we have to Calculate number of molecules present in 7.35 mol NH3.

Q: Calculate the mass in grams of 3.60 moles of chromium(II) bromide?

A: Molar mass is the mass of 1 mole of a substance.

Q: How many grams of K2CrO4 are found in a sample containing 0.186 moles of this compound?

A:

Q: What amount (mole) of C2H3Cl3O2 molecules are in 498.4 g chloral hydrates

A: Molecular formula of chloral hydrate = C2H3Cl3O2 Weight of C2H3Cl3O2 = 498.4 gram

Q: How many molecules are in 502.1 g of LIF?

A: Mass of LIF = 502.1 g Molecular weight = 25.939 g/mol Molecule= ?

Q: How many moles of C4H8O2are in 6.00 g of butyric acid?

A: Given  Mass of C4H8O2 = 6 gram  Number of mole = ?

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: How many particlcs arc there in 1.43 grams of a molccular compound with a molar mass of 233 g/mol?

A: Given data contains, Mass of molecular compound is 1.43 grams. Molar mass of the compound is 233…

Q: Galantamine is a drug given to patients who have Alzheimer's disease. Its chemical formula is…

A:

Q: A sample of propanol, C3H3O, contains 0.383 mol of the compound. What is the mass of the sample, in…

A:

Q: A compound containing only sulfur and arsenic is 30.0% S by mass; the molar mass is 428 g/mol. What…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: How many mole are there in 691.3 mg of strontium permanganate?

A:

Q: How many moles of tetracycline (C₂₂H₂₄N₂O₈) are in 92.1 grams?

A: Before going to find out moles of tetracycline, We first find out molecular weight of C22H24N2O8 ,…

Q: 0.5505 moles of sodium bicarbonate in grams.

A: Mole is defined as the amount of atoms that are in exactly 12 grams of carbon-12. One mole of a…

Q: hat is the percent composition by mass of copper in 80.0kg of copper (ii) phosphate

A: To calculate the percent composition by mass of copper in 80.0kg of copper (ii) phosphate.

Q: How many atoms are present in (2x10^0) moles of an element?

A:

Q: What is the mass of carbon in grams found in one molecule of the compound C7H8O4?

A: The atomic mass of carbon is 12 g. Thus, the mass of one atom of carbon in the molecule is…

Q: How many moles are equal to 4.5 x 1023 molecules of carbon monoxide? (Round to two decimal places).

A: No of CO molecules = 4.5 × 1023 molecules No fo moles = to be determined

Q: What is the number of moles present in 862 g of calcium hydrogen sulphate?

A: Given data contains, Mass of calcium hydrogen sulfate is 862g. Molar mass of calcium hydrogen…

Q: What would the empirical formula be for a compound that contains only nitrogen and oxygen and is…

A: Find the solution below

Q: How many moles of (NH4)3PO4 are contained in 0.917 g of this compound?

A: Given that: Mass of (NH4)3PO4 = 0.917g Moles of (NH4)3PO4 = ?

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: How many atoms in 4.93  mol O2?

A: One molecule of O2 contains two oxygen atoms. According to the Avogadro concept, we know that one…

Q: how many molecules are there in 1×10^-4 mole of benzene C6H6?

A: Given that, Number of moles of benzene = 1.0×10-4 moles

Q: What is the mass percent composition of oxygen in a compound having the empirical formula C20H34O4?

A:

Q: What percentage of NH4NO3 is nitrogen?

A: Mass percent of element  is the mass of element present in 100g of the compound. Mass percent of…

Q: How many moles of carbon dioxide (CO2CO2) are in 34.9 g34.9 g of the compound?

A: Given:Mass of CO2 = 34.9 gMolar mas of CO2 = 44.01 g/mol.

Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

Q: How many molecules of silicon tetrahydride are present in 3.82 grams of the substance

A: According to mole concept, molar mass or 1 mole of a substance contain Avogadro number of molecules…

Q: How many atoms are in 3.67x10^-5 mol of (NH4)2SO4?

A: Introduction:

Q: How many moles are present in 258.6 grams of magnesium oxalate, MGC204?

A: Given: The mass of magnesium oxalate =258.6 g   Molar mass of magnesium oxalate = 112.32 g/mole   No…

Q: How many number of moles are present in 100 g of CaCO3?

A: The number of moles of a compound can be calculated by the ratio between mass of the compound to its…

Q: How many moles of water, H2O, are present in 75.0 g of H2O?

A:

Q: How many moles of atoms are present in 5 moles of Al(OH)3?

A: To determine the number of moles of atoms present in 5 moles of Al(OH)3 , we need to consider the…

Q: 12. What is the mass of one mole of acetylsalicylic acid (aspirin), C₉H₈O₄?

A: The mass of one mole of substance in gram is equal to the molar mass of that substance. The mass is…

Q: There is a series of nitrogen oxides that have the general formula NxOy.  What is the empirical…

A: Given :-  General formula of nitrogen oxide = NxOy  Percent composition by mass of N = 25.94%  To…

Q: How many millimoles are in 3.93 x 1025 bismuth(V) hydrogen carbonate formula units?

A:

Q: What is the percent by mass of oxygen in aspirin (C₉H₈O₄)?

A: The molecular weight of aspirin (C9H8O4) is  (12×9+1×8+16×4)=180 gm/mol The oxygen present in…

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Mass percent of an element:

Q: How many molecules are in 2.55 mol S8?

A: The moles of sulphur is 2.55 (given)Mol → Number of molecules

Q: Magnesium phosphate is an ionic compound which is widely used in medication to support the…

A: The formula of ionic compounds is written by following electrical neutrality principle, which states…

Q: How many moles are there in 313.87 g of Hexane

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.