If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage of calcium is --- O 20.57% O 36.57% O 15.57% O 5 4a 30.36% O Other:

Q: the insecticide DDD contains only c,h, and cl. When 3.2 g is combusted, 6.162 g of Co2 and 0.9008 g…

A: Given : DDD contains only C, H and Cl atoms. Mass of DDD combusted = 3.2 g Mass of CO2 produced on…

Q: What is the percentage of hydrogen in C6H14? The molecular weight of C is 12.011 g/mol, of H 1.00794…

A: There are some steps to find percent of an element present in a compound. Those steps are - 1) find…

Q: A hydrate of Na2CO3 has an initial mass of 4.31 g before heating and 3.22 g after.      What is the…

A: The initial mass of hydrate of Na2CO3 before heating is = 4.31 g The mass of Na2CO3 after heating is…

Q: what mass of cerrusite PbCO3 (MM= 267.21g/mol) contains 110g of O

A:

Q: 6Li + N2 --> 2Li3N If 50 g Li react with 40 g N2, what is the maximum mass of lithium nitride…

A: To Solve this problem we will the given balanced chemical equation.  First we will find the limiting…

Q: MgSO4•7H2O what is themolar mass g/mol?

A: We can calculate the molar mass of MgSO4•7H2O by adding the mass of all atoms which are present in…

Q: Which of the following cartoons correctly represent the reaction shown N2 + 3H2 -> 2NH3 O a atom of…

A: Given reaction: So, according to this balanced equation, 1 mol N2 reacts with 3 mol H2 to produce 2…

Q: 8.3.01 x 1023 CH₂O molecules moles CH₁₂0 9. 1.00 x 1025 Na atoms moles No

A: Here, we have to find the number of moles of C6H12O6 in 3.01×1023 C6H12O6 molecules and the number…

Q: 1 How many are the oxygen atoms in 111 g of Ca(OH)2? (Atomic mass of Ca = 40)

A: Given 111g of Ca(OH)2

Q: How many carbon atoms are present in 0.2523 g of retinal (C20H28O, molar mass=284.4 g/mol)?

A: The carbon atoms in 0.2523 g of retinal can be calculated as:

Q: 4.) The following reaction creates ammonia, a very useful chemical industrially. (Molar masses: N2…

A: Note: As per our guidelines, we are supposed to answer only the first question when multiple…

Q: Phosphoric acid can be prepared by reaction of sulfuric acid with “phosphate rock" according to the…

A:

Q: Tetraethyl pyrophosphate, TEPP, is 33.11% carbon,6.95% hydrogen, 38.59% oxygen, and 21.35%…

A: First, we need to calculate the number of moles of each element in 100g of the compound. We do this…

Q: Consider the mixture of propane, c3h8 and o2 a. What is the percent, by mass, of carbon in propane?

A: The molecular formula of propane is = C3H8 The mass percent of the carbon in propane is =?

Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: What mass of oxygen difluoride OF2, contains the same number of fluorine atoms as 5.20 g of…

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

Q: A 22.2g sample of lead (207.2 g/mol) was completely reacted with excess nitrogen (14 g/mol) in a…

A: Empirical formula :-  The chemical formula which shows only the  simplest mole ratio of atoms of…

Q: What quantity of atoms of carbon are produced by the complete reaction of 7.09 grams of magnesium…

A:

Q: If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage…

A: Given that Weight of  calcium oxalate (CaC2O4) = 2g  Weight of  ammonium oxalate ((NH4)2C2O4) = 0.15…

Q: Consider the equation CH4+202–>CO2+2H2O If the experimenter uses 9.2 grams of CH4 and enough O2, how…

A: The number of moles of a molecule is related to its molar mass as: Number of moles = MassMolar mass…

Q: Glucose has the empirical formula CH2O and an empirical formula weight of 30.0 amu. If the molecular…

A: Molecular formula = (empirical formula)n n = molecular weight / empirical formula weight molecular…

Q: What is the mass percent composition of S in Al,(50,,? 21.38 % O9.372 % 42.73 % )35.97 % 28.12 %

A: The compound give is Al2(SO4)3. Assuming 1 mole of the compound. Molar mass of Al2(SO4)3 = Atomic…

Q: For the reaction: N2 + H2= NH3. if you start with 45.901 grams of nitrogen, how nany grams of NH3 do…

A: Given :-  N2 + H2 → NH3  amount of N2 = 45.901 g  To be calculated :-  amount of NH3 formed (in…

Q: How many C atoms are present in a 5.03 ng sample of nitrobenzene, C6H5NO2?

A: In this question, we will determine the number of C atoms in the given mass of Nitrobenzene sample.…

Q: How many calcium atoms are in 1 g of CaO? O 9.553 x 10-23 O 7.201 x 1023 O 1.074 x 1022 O 1.422 x…

A:

Q: Which contains the greatest mass of oxygen?   0.75 mol of ethanol (2C H5 OH)   1.0 mol of water…

A: Which contains the greatest mass of oxygen?

Q: Number of atoms of C in 10 moles of CAH10 are: O 24.09x10^23 O 240.88x10^23 O 4.15x10^23 O…

A:

Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 gH and…

A: 3rd option is correct that is 58.5%

Q: How many H atoms are present in a 6.43 ng sample of nitrobenzene, C6H5NO2?

A: Step 1: Calculation of moles of nitrobenzene Given,mass of nitrobenzene = 6.43 ng = 6.43 ng × ( 10-9…

Q: If element X has a molar mass of 41g / mol, and element Z has a molar mass of 23 g / m * the molar…

A: Molar mass of element X = 41 g/mol Molar mass of element Z = 23 g/mol

Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

A: Dear student since it is a multiple type question, according to guidelines here I am solving only…

Q: What is the mass of exactly 1 mole of each of the compounds? N,O: Fe(CIO),: Fe(CIO, )3:

A:

Q: Find the percentage by mass of oxygen (O) in N2O4 if it is 30.4% nitrogen (N) by mass.

A: We have given that Percent by mass of nitrogen in N2O4 = 30.4% Mass of N2O4 = 92.011 g/mole Percent…

Q: If you have a sample of 55.2 grams of LizCO3, how many atoms of Li¿CO3 are in your sample?

A:

Q: How many O atoms are there in (2.23x10^2) grams of CaCO3 (MM = 100.09 g/mol)?

A: According to the molecular formula of CaCO3, 1 molecule of CaCO3 contains 3 atoms of O. So, 1 mol of…