14.255 g of a compound with the molecular formula C5H4N4 contains ______ carbon atoms. Report your answer in scientific notation and to 2 s.f. For example, if your answer was 6.0221 x 1023 you would report it as 6.0e23.

Q: A 19.00 kg sample of an unknown compound contains 0.06 kg of hydrogen, 11.01 kg of gold, 7.93 kg of…

A: Percent composition of any element in a compound is given by the following expression        percent…

Q: sample of the unknown compound was placed in a weighed drying pan and heated to give the data below.…

A: Given that the experimental data:   Mass of the drying pan m1= 1.445 g Mass of drying pan and…

Q: Which of these is true? 1. A molecular formula gives the actual number of each type of atom…

A: Based on the statement we can say that the statement is true or false.

Q: مان A₂B(g) +B(g) =A₂B₂ (g) 1 c = 16-4 2 Ag+ 2B (g) = A ₂ B₂ (g) kc = 28.2 Fc for the reactio 6 A (g)…

A: here we are required to find the equilibrium constant for the given reaction.

Q: Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g.…

A:

Q: Calculate the mass of carbon atoms in 0.767 moles of glucose, C6H12O6. Use the correct number of…

A: Given that: number of moles of glucose =  0.767 To find:  mass of carbon atoms in 0.767 moles of…

Q: made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2…

A: Given -> Weight of J2(QZ3)2 = 7.2 gram  Atomic mass of J = 19.00 g/mole Atomic mass of Q = 35.00…

Q: How many iodine atoms are present in 4.10 moles of diatomic iodine? Give your answer in scientific…

A: Given: The number of moles of diatomic iodine=4.10 moles To calculate: The number of iodine atoms.…

Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: How many grams of CH3CO2C5H11 must be weighed out to provide 3.22 x 1023 atoms of H? When you input…

A: Mole in terms of particles : 1 mol = 6.022 x1023 particles  where particles =…

Q: Co(NO3)2

A: a) First find out the moles of Co(NO3)2 :  moles = ( formula unit / Avogadro number )  Moles = (…

Q: A pure titanium cube has an edge length of 2.85 inin . How many titanium atoms does it contain?…

A: Edge length of pure titanium cube = 2.85 in Density  of titanium = 4.50 g/cm3

Q: What mass (in kg) does 4.41 moles of copper have?     0.784 kg     0.444 kg     0.280 kg…

A: Given -  No of moles =4.41 moles  Molecular mass of  copper (M) = 63.546  g / mol No of moles = 4.41…

Q: What mass of chlorine is contained in 80.3 g of ZnCl2?

A: %w/w = (mass of chlorine in ZnCl2/mass of ZnCl2) × 100

Q: A certain organic compound has the formula C9H11O2.  A sample of this compound weighs 85.88 grams.…

A: The formula of the given organic compound is C9H11O2.  Mass of the compound=85.88 grams. The molar…

Q: Sucrose has the molecular formula C12H22011. If a sucrose sample contains 9.0 x 1024 atoms of…

A: Given, Sucrose has the molecular formula: C12H22O11 A sucrose sample contains, Number of atoms of…

Q: Consider these compounds: A. Zn3(PO4)2 B. Ag₂CO3 C. Ca3(PO4)2 D. Ag₂SO4 Complete the following…

A: The question is based on the concept of solubility product principle. It states that when a weak…

Q: The molecular formula of rimantadine is C12H21N.    How many carbon atoms are in 80.44 grams of…

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

Q: 10) Draw a disassociation of Hydrochloric acid and water.

A:

Q: How many moles of C are present in 0.732 moles of Benadryl? Express your answer to three significant…

A:

Q: 6.90 x 1024 formula units of sodium nitrite, NaNO₂ Express your answer with the appropriate units.…

A: Multiple  questions

Q: The correct result (indicating the proper number of significant figures) of the following…

A: To determine the correct result with the appropriate number of significant figures, we need to…

Q: Two different compounds both contain Element X and Element Y.  Compound I has 1.000 g Element X and…

A: Two different compounds both contain Element X and Element Y. Compound I has 1.000 g Element X and…

Q: How many (NH4)2CO3 formula units are there in 16.9 g of (NH4)2CO3? Enter your answer using the…

A:

Q: a. How many grams of C are present in 1.76 grams of carbon tetrachloride? Mass= 9 C b. How many…

A:

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: You can also calculate percent composition from a formula. This is similar to percent abundance in…

A:

Q: A newly found compound was discovered to contain 4 iron atoms. If the molar mass of this compound is…

A:

Q: A certain organic compound has the formula C8H12O2. A sample of this compound weighs 1.05 grams.…

A: To determine number of atoms of hydrogen in sample We need to calculate moles of sample present .…

Q: the context is "Cosmone is a molecule used by fragrance manufacturers to provide a rich and elegant…

A: The solution is as follows:

Q: a. How many ATOMS of phosphorus are present in 2.41 grams of phosphorus pentachloride? atoms of…

A: -> number of moles are obtained when weight is divided by atomic mass or molar mass . -> 1…

Q: The formula for carbon monoxide is CO. a. How many molecules are in 7.67 grams of carbon monoxide?…

A:

Q: A hypothetical element exists as two isotopes: I = 85.50 amu and II = 88.70 amu. If the percent…

A: