1. How many grams of Si are present in 2.01 grams of silicon dioxide grams Si. 2. How many grams of silicon dioxide contain 1.38 grams of O ? grams silicon dioxide.

Q: How many Mg2+ ions are present in 0.500 g of magnesium phosphate?

A: Magnesium phosphate = Mg3(PO4)2 Molar mass(MM) = 262  g Mass of Mg3(PO4)2 = 0.500 g Moles of…

Q: 1. How many MOLES of carbon tetrabromide are present in 1.74 grams of this compound ? moles. 2. How…

A:

Q: A Sample of pure Calcium fiuoride With a mass of 15.0g Contains 1.709 of calcium. How much calcium…

A: This question can be solved using proportion method as:

Q: Calculate the number of mol corresponding to:a. 20.0 g He b. 0.040 kg Na c. 3.0 g Cl2

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

Q: Label the diagram to correctly convert 68.97g of Na to moles of Na 1. : 68.97g of Na : 1 mol Na :…

A: To convert g to mol we have to multiple g with some converting factor to get mole.

Q: 2Fe2O3 + 3C → 3CO2 + 4Fe   C. How many grams of Fe are produced from 1.88g of C?

A: First, we need to convert grams of Carbon to moles of carbon, and using stoichiometric calculation…

Q: 3- calculate the number of (O) atom in 1.5 g of glucose (C6H1206).

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 1) How many zinc (Zn) atoms are contained in 5.16 moles of Zn?

A: Mole is described as the amount of a substance which consist of  exactly the Avogadro number of…

Q: (a) Write “true” or “false” for each statement. (a) A mole ofhorses contain a mole of horse legs.…

A: The number of moles is given by mass divided by molar mass. One mole of each substance contains the…

Q: Solve this

A: The mole is a very important unit which is used to convert the mass of a substance to number of…

Q: A 10 gram sample of NaCl will have the same percent composition (percent by mass) of Na and Cl than…

A:

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

Q: determine the numbers of moles or molecules (or formula units) in each sample: A) 34.0 g sodium…

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

Q: Which one is heavier 3 moles of H2o or 1 mole of H2SO4

A: Number of moles of H2SO4 = 1   Number of moles of H2O   = 3

Q: Determine the molecular formula for a compound consisting of 95.21% carbon and 4.79% hydrogen with a…

A:

Q: 32. How many grams of Li;N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Calculate the moles of Magnesium (Mg) present in 93.5 g of Mg?

A:

Q: A type of steel used for bicycle frames contain 5g of manganese in every 400 g of steel. How much…

A: Given: Mass of manganese in 400 g of steel = 5 g And total mass of steel in bicycle = 2200 g

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: 4 Fe + 3 O2 2 Fe2 O3 What is the mole ratio of Fe2 O3 to O2?? 4 to 3 2 to 3 3 to 2 O3 to 4

A: Given reaction is,  4 Fe + 3 O2 -> 2 Fe2O3 We need to determine molar ratio of Fe2O3 and O2 .

Q: Threonine is an amino acid with the formula C4H9NO3C4H9NO3. Determine the number of moles of carbon…

A: Formula of Threonine = C4H9NO3  Mass of threonine = 48.15 g Moles of carbon = ?

Q: How many molecules are contained in a pentanal (C5H10O) sample with a mass of 5.27 g?

A: 1 mole of any substance contains Avagadro number (6.023 *1023) of species. therefore, 1 mole of…

Q: How many moles of allicinare present in 5.00 mg of this substance?

A: Allicin is a chemical compound that characteristic smell of garlic. The chemical formula of allicin…

Q: a. How many molecules of water are present in 3.86 moles of this compound? molecules 22 b. How many…

A: The relationship between number of molecules and moles is  Number of molecules of any compound =…

Q: 1. How many MOLES of dioxygen difluoride are present in 1.20 grams of this compound ? moles. 2. How…

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

Q: Consider 1.00 g of Copper (Cu) metal. How many Cu moles are present in this sample? How many Cu…

A: Since moles of element = mass of element / Atomic mass of element  Atomic mass of Cu = 63.5 g/mol…

Q: Which has more hydrogen atoms? A mole of CH4 or two moles of H2? Provide an explanation.

A: Interpretation: Which has more hydrogen atoms, a mole of CH4 or two moles of H2 is to be determined.

Q: 1. How many GRAMS of barium fluoride are present in 2.28 moles of this compound ? grams. 2. How many…

A: For any given element or compound moles of any substance is the ratio of mass taken of that…

Q: 1. How many MOLECULES of water are present in 3.00 moles of this compound ? molecules. 2. How many…

A:

Q: Determine DS for this process, with 2.78 moles of gas at constant temperature:

A: Here, expansion of Helium gas is taking place at constant temperature. Hence, it is an isothermal…

Q: 1.2.How many moles of sodium bicarbonate are present in the 5.00 g?

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Please check my work on percent composition (chemistry.) 1. Use the Percent of Al, Si, and O to get…

A: In this question, we will determine the Empirical formula of the compound  For, the empirical…

Q: Determine the molecular formula for a compound with 92.3% carbon and 7.70% hydrogen with a molecular…

A: Given, A compound in which,percentage of Carbon =92.3 %percentage of hydrogen =7.70 %molecular mass…

Q: 1. How many GRAMS of iron(II) carbonate are present in 1.93 moles of this compound ? grams. 2. How…

A: Formula used :-  Number of moles :- given mass/molar mass

Q: a. How many moles of dinitrogen monoxide are present in 3.79 × 1022 molecules of this compound?…

A:

Q: 3. The average atomic mass of an atom is expressed in c. g/mol a. grams b. amu d. moles 4. Which…

A: Choose the correct option of the following --

Q: a. How many grams of magnesium sulfide, MgS, are present in 1.76 moles of this compound? grams b.…

A: Known: The molar mass of MgS is 56.38 g/mol.

Q: 1. How many GRAMS of lead(II) phosphate are present in 3.99 moles of this compound ? grams. 2. How…

A:

Q: 1. How many GRAMS of calcium fluoride are present in 3.21 moles of this compound? grams. 2. How many…

A:

Q: And set up the mole ratio of O2 to C4H9OH =    CO2 to O2= Confused on how to do the ratios.

A: mole ratios is the ratio of moles of one component to the moles of another component in a balanced…

Q: Which has the most F atoms: 3 g CH3F , 3 g HF , or 3 g KF ?

A:

Q: 1. Determine mass (in mg) of carbon that contains 0.050 moles.

A:

Q: 2. How many moles of I, are in 8.23 moles of Nal 2Nal 1 Cl, > 2NACI +11,

A: From 2 moles of NaI produces 1 moles of I2 so Apply mole ratio.

Q: Calculate mass of .555 moles of magnesium fluoride

A: This question is based on the mole concept. Molar mass of any compound is equal to the mass of the 1…

Q: 1. How many MOLECULES of carbon tetrafluoride are present in 2.25 moles of this compound ?…

A: The number of moles of a substance is determined as the number of molecules, atoms or ions upon…

Q: 16) Determine the number of atoms in 48.3 g sample of zine (65.38g Zn= Imole Zn

A:

Q: Calculate the number of moles of fluorine atoms in 61.7 mL of CHClF2 (density=1.49 g/mL)

A: Mass of CHClF2 is calculated as follows:

Q: 1. How many MOLECULES of tetraphosphorus decaoxide are present in 2.87 moles of this compound ?…

A: 1. Moles of tetraphosphorus decaoxide= 2.87moles Molecules of tetraphosphorus decaoxide in 2.87…

Q: 1. How many MOLES of dinitrogen tetroxide are present in 4.67 grams of this compound ? moles. 2. How…

A: Mole of substance is defined as given mass divided by its molar mass.

Q: Calculate the number of molecules in 27.6 grams of glucose, C6H1206. 9.23 x 1022atoms 1.05 x 1023…

A: