calculate the number of moles present in 272 grams of iron (III) nitrate.  Round your answer to 2 decimal places

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: How many grams of ibuprofen are in 0.540 moles?

A: number of moles = mass/molar mass  mass = moles × molar mass

Q: A container has 5.30 x 1023 molecules (aka atoms) of bromine gas. Calculate the mass (in g) of…

A: A container has 5.30 x 1023 molecules (aka atoms) of bromine gas. We have to calculate the mass (in…

Q: How many daL of bromine are in 15.7 x 1022 molecules?  (The density of bromine is 3.1 g/cm3) The…

A: Given: The density of bromine = 3.1 g/cm3 We have to find How many daL of bromine are in 15.7 x 1022…

Q: A sample of chlorine has a mass of 49.4 grams. How many Cl atoms are there in the sample?  atoms…

A: Chlorine mass of  = 49.4gm Calculate the  =  1 - how many cl atom of sample  2 - how many cl2…

Q: 1) Determine the number of moles in each sample: a) 38.2g sodium chloride b) 36.5g nitrogen monoxide…

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Q: What is the mass (in grams) of 8.10 x 1023 molecules of C6H12O6 ? Remember to report proper number…

A: In multiplication and division we report final answer to least significant figures in available…

Q: The molecular formula of aspirin is C9H8O4. How many aspirin molecules are present in one…

A:

Q: What is the mass percentage of carbon in C6H12O3? Express your answer as a percentage (i.e., out of…

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Q: Calculate the grams of sulfur in 8.022x1025 formula units of Lithium sulfate

A: The mass of formula unit of a substance is defined as the sum of atomic masses of all the atoms in a…

Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: What is the percentage of oxygen in a 500 g sample of potassium sulfate? Report your answer to the…

A:

Q: How many molecules are in each sample? A. 2.8g H2O (Express your answer using two significant…

A: Given  (a)   Mass of H2O   = 2.8 gram         Number of molecule = ?  (b)  mass of N2 = 40.8 gram…

Q: How many milligrams in a gram? O 0.01 O 101 O 10,000 O 10 O 0.0001 O 0.1 O 103

A: Gram and milligram are units used for weights.  1 kilogram = 1000grams 1 gram = 1000 miligrams

Q: What is the weight of the grams of Na equivalent to the same number of atoms as those in 15 g of K?

A: Given: Mass of potassium= 15 g  The molar mass of potassium = 39.098 g/mol Moles of potassium=Mass ÷…

Q: What is the mass in grams of 4.57 × 10²⁵ molecules of Cl₂? I get the write and but the wrong number…

A: Mole concept: The number of molecules in one mole of chlorine is equal to the Avogadro number. The…

Q: Assume that the ratio of moles of Cl to moles of Cu are 1.84.  If we can represent the formula by…

A: The ratio of moles of any two substances in a balanced chemical reaction is called molar ratio.…

Q: If you have a total of 5.2 grams of a mixture and 2.0 grams of that mixture is determined to be…

A:

Q: How many moles of NaOH are in 8.2x10^27 formula units of NaOH? Round your answer to the 1 decimal…

A: To calculate the number of moles of NaOH are in 8.2x10^27 formula units of NaOH.

Q: Calculate the mass (in grams) of 4.69 x 1024 carbon atoms.

A: Given : 4.69 × 1024 carbon atoms.  We know 6.022 × 1023 atoms = mass of one mole

Q: On 12 and 13 I got a negative scientific on one and a positive on the other. Did I make a mistake…

A: General chemistry12. The number of atoms or molecules in a mole of any substance is equal to…

Q: Calculate how many minutes it would take you to place 4.9 moles of carbon atoms on a paper if you…

A: Given : Moles of carbon atoms= 4.9 moles 0.0015 moles in 6 minutes are taken on a paper.  To find:…

Q: many grams of O2 are in 1.51 x 1023 molecules

A: 1 mole contains molecules equal to avagadro's number  Molar mass of O2= 32 g/mol It means 32 g O2 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: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific…

A:

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: Answer:- This question is answered by using the simple concept of chemical formula analysis of the…

Q: Urea, chemical formula (NH,)½CO, is used for fertilizer and many other things. Calculate the number…

A:

Q: How many C atoms are present in 8.94 · 1020 CH3C(O)H molecules? Express your answer in scientific…

A: Scientific notation is way to express the numbers that are too big or small to be written…

Q: Find the percent, by weight, of each component.

A:

Q: The chemical formula for diethyl amine is: (CH;CH,),N H 2 Calculate the molar mass of diethyl amine.…

A: Mass of one mole of substance is known as molar mass of substance. It may be calculated by adding…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: Given : Chemical formula of acetic acid = CH3COOH  And moles of carbon in acetic acid sample = 42…

Q: Calculate the mass in grams of each sample 5.20×1020 H2O2 molecules

A: Molar mass of any compound is the mass of that compound in which Avogadro's no. of molecules are…

Q: 85 mL of 7 M C21H23NO5 contains how many moles of carbon? Your answer should have two decimal…

A: Given: Concentration of C21H23NO5 = 7 M Volume of solution = 85 mL = 0.085 L…

Q: How many C atoms are present in the sample of C3H8 with mass 7.11 g? Avogadro's number is 6.022 x…

A: Given : Mass of C3H8 = 7.11 g

Q: How many grams of Mg3(PO4)2 are there in 2.3 moles of Mg3(PO4)2 ? Round your answer to 2 decimals.…

A:

Q: How many formula units are in 30.912 g of potassium permanganate? Give answer to the correct number…

A: A numerical problem based on formula unit, which is to be accomplished.

Q: mmonium nitrate: NHẠNO3(s) N20(g) + 2H209) How many g of dinitrogen monoxide can be made from 1.62 x…

A: In this question, we want to determine the mass of N2O gas in gram unit.  You can see details…

Q: 18. What is the number of grams of N2(g) that contains 9.02 x 1023 molecules? A. 18.7 grams B. 42.0…

A: Given the number of molecules of N2(g) =9.02×1023 moleculeswe are asked to calculate the amount of…

Q: How many moles Fe(OH)3 are there in 286 g of Fe(OH)3? Round your answer to 2 decimals. Your Answer:…

A:

Q: How many moles of NaOH are in 2.2x1024 formula units of NaOH? Round your answer to 1 decimal place.

A: Amount of substance is one of the seven basic physical quantities. Its unit is mol. For an element,…

Q: Find the percentage by mass of Cl in CaCl2 if it is 36.1% Ca by mass. (Round your answer to one…

A: (1) The percentage by mass of Cl is 63.8% in CaCl2 if it is 36.1% Ca by mass.      (2) the…

Q: What is the mass (in grams) of 9.39 x 1024 molecules of methanol (CH4O)? First determine the molar…

A:

Q: Calculate the formula mass of N2H4 to 2 decimal places.

A: To calculate the formula mass of N2H4.

Q: How many potassium ions are in 53.0 g of K3PO4? - 4.51 x 10^23 - 8.19 x 10^23 - 5.01 x 10^22 - 1.51…

A:

Q: Part A: How many atoms of hydrogen does it contain?         Express your answer using four…

A: Given: Number of carbon atoms in C6H12O6 = 1.300 × 1021 atoms.

Q: How many helium atoms are there in a helium blimp containing 534 kg of helium?   Express the number…

A: Mole= mass/molar mass  Molar mass of Helium =4g/mol So first Calculate mole Then atoms…

Q: Find the mass in grams of 0.91 mol of iron (II) oxide, FeO. Round your answer to two decimal places.

A:

Q: Calculate the mass in grams 3 sig figs . Of 0.0591 miles of aluminum sulfate

A: Given:  Moles of aluminum sulphate = 0.0591 moles  Molar mass of Al2(SO4)3 = 342.15 gm/mol

Q: how many molecules are in the sample 2.0 g H2O? Express your answer using two significant figures.

A: Number of moles of water can be calculated as follows: No. of moles = MassMolar massNo. of moles =…