A 21.8 g sample of water contains how many water molecules?

Q: many molecules?

A: As we know, Moles = Number of molecules/6.02×1023 Number of molecules =  Moles × 6.02×1023

Q: Name the compound or supply the chemical formula:

A: As per the rules, the name or symbol of cation is written first followed by that of anion. If the…

Q: How many grams of water (18.02 g/mol) would contain 6.54x10^24 hydrogen atoms?

A: Given :Molar mass of water = 18.02 g/molNumber of H-atoms = 6.54 x 1024We need to calculate the…

Q: A 12.35 g sample of aluminum hydroxide contains how many mol of hydroxide ions?

A:

Q: Analysis of a 29.1 g sample of water revealed a mass percent for lead of 4.35%. Calculate the number…

A: Mass percent of lead is equal to the mass of lead divided by the mass of water multiplied by 100.

Q: 80 grams of sodium hydroxide contains how many molecules?

A:

Q: empirical formula of the compound? List the elements in standard order for carbon compounds:

A:

Q: Determine the number of formula units in 3.15 mol CaBr2

A:

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: A sample of hydrogen sulfide, H2S, has a mass of 56.75 g. Calculate the number of hydrogen sulfide…

A: Number of molecules can be calculated by using following formulaNumber of molecules = moles ×…

Q: 1. The formula for ibuprofen is C13H1802. How many moles of ibuprofen are present in 250.0-mg…

A: Here, we can answer only the first question which allows us to determine the number of moles of…

Q: A sample of hydrogen sulfide, H2S, has a mass of 57.25 g. Calculate the number of hydrogen sulfide…

A: Given data,Mass of H2S=57.25gMolar mass of H2S=34.1g/mol

Q: What is the mass of a phosphorus pentachloride molecule ? grams

A: 1 mol phosphorus penta chloride have mass equal to it's molar mass  Mole=mas/molar mass…

Q: How many moles are present in 67.6 grams block of ice?

A: The number of moles (n), mass (m) and molecular mass of a sample of a compound (M) are related as:

Q: calculate the theoretical percent of potassium chloride in potassium chlorate.

A: Since mass is missing in the term mass percent of potassium chloride in potassium chlorate. Hence I…

Q: A sample of ammonia has a mass of 98.5 g. How many molecules are in this sample?

A:

Q: a) How many moles of methanol are present in the sample? b) Calculate the number of methanol…

A: Since you asked multiple questions, so as per Q&A guidelines of portal i solved first three part…

Q: In a hydrate, the ratio of salt molecules to water molecules is a _____number.

A: A hydrate is an ionic compound that has a definite amount of water molecules attached to its…

Q: 2, how many moles of water can form?

A:

Q: How many sulfite ions are contained in 99.6 mg of sodium sulfite?

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: How many hydrogen atoms are in 1.0kg of water?

A:

Q: How many molecules are contained in two 270.-mg tablets of petricillin

A: Number of moles = mass/molar mass  1 mol contains 6.022 × 1023 molecules

Q: how many water molecules can a teaspoon hold?

A: Volume of 1 teaspoon = 4.93 mL Volume of teaspoon = volume of water = 4.93 mL = 4.93×10-3 L

Q: What is the number formula units in a 9.99 mol sample of CaO

A: Relationship between number of moles and formula units is given below:

Q: How many chlorine molecules are contained in a 151.34 g sample of chlorine?

A: To know the number of molecules, first we have to know the number of moles. Moles = Given mass /…

Q: A cleaning bottle contains 83.1 g of ammonia. How many molecules of ammonia are in the bottle?

A:

Q: How many MOLECULES of dioxygen difluoride are present in 9.22 grams of this compound ?

A: We know, 1 mole of a compound contains 1 Avogadro number of molecules, where 1 avogadro number =…

Q: A 15.6 g sample of magnesium carbonate contains 3.2 g of magnesium. What is the percent Magnesium in…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: 48.1g of aluminum hydroxide to molecules of aluminum hydroxide

A: Consider the given information is as follows; Mass of aluminum hydroxide = 48.1 g…

Q: What mass of barium bromate, Ba

A:

Q: A hydrate of Barium nitrate contains 73.46% salt by mass. Determine the formula of the hydrate.

A:

Q: How many moles of water can be formed from 5 moles of oxygen gas?

A:

Q: A water bottle contains 54 g of water. How many water molecules are contained in the bottle?

A: Given data is as follows: The mass of the water = 54 g The molar mass of Water (H2O = 18 g/mol As we…

Q: A 78.0-g sample of an unknown compound contains 12.4 g ofhydrogen. What is the percent by mass of…

A: Given: Weight of the compound = 78 g Weight of hydrogen = 12.4 g The calculation of the % by mass is…

Q: The number of molecules in 76g of fluorine

A:

Q: How many MOLECULES of water are present in 9.27 grams of this compound?

A: Given :-  Amount of water = 9.27 g  To calculate :-  Number of molecules in the given amount

Q: What mass of CCl4 contains 7.0x1026 molecules of CCl4

A:

Q: How many molecules of water are present in 3.4 g of water?

A: A numerical problem based on mole concept, which is to be accomplished.

Q: What is the mass of 9 water molecules?

A: Given : Number of water molecules i.e H2O = 9 molecules

Q: In a laundry tablet, there are 0.750 grams of potassium carbonate. Calculate the number of molecules…

A: Given information,       Mass of potassium carbonate is 0.750 g.

Q: How many water molecules are in a block of ice containing 1.50 mol of water (H2O)?

A: Given : Moles of water i.e H2O = 1.50 mol

Q: How many water molecules are in 36 grams of water

A: Given,Mass of water = 36 gMoles of water can be calculated as:

Q: How many grams of Na are present in a 15 g sample of NaCl?

A: The number of moles for a given chemical species can be defined as the ratio of mass to the molar…

Q: Element Color Key # of Atoms # of Atoms (Reactants) (Products)

A:

Q: How many total atoms in 23.7 g of water ?

A: Stoichiometry is mainly based on the calculation of moles, molar mass and volumes. These two values…

Q: How many water molecules are in 23.7 g of water

A: Given,  mass of water = 23.7 grams Here, number of moles = mass of water / molar mass { molar mass…

Q: How many molecules of water make up 5.7 moles?

A: A mole is the amount of a substance that contains 6.02*10^23 representative particle of that…

Q: How many grams of ammonia can be formed from 0.383 g of H2. Use correct sigfigs

A: The given data: The mass of hydrogen gas = 0.383 g To determine =The mass of the ammonia produced.

Q: What is the percent of NaOH by mass for 120 g of NaOH in 1000 g of water?

A: 120 g of NaOH in 1000 g of water.Mass of the solution is mass of the solute plus mass of the…

Q: How many water molecules are in 23.7g of water?

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.…