1. a) Calculate the mass percent of NaHCO3 based on the manufacturer's list of ingredients: 325 mg aspirin, 1000 mg citric acid, 1916 mg NaHCO3. Use the average mass of a whole tablet provided by your instructor.  Average mass of whole Alka-Seltzer® tablet = 3.2g 1. b) Mass % of NaHCO3 in a whole tablet (%)

Q: 8.* A4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water when heated.…

A: The question is based on the concept of experimental chemistry. we have to calculate the empirical…

Q: Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1…

A: mass percentage of water = Mas of waterMass of hydrate x 100

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

A:

Q: 15. This ForeverspinTM top os made of pure carbon, with an Atomic Mass of 12. This top weights 9…

A: P

Q: Freya weighs an empty crucible and finds it to have a mass of 95.83 g (including the lid). After…

A: 1. Mass of the hydrate to start with = Mass of beaker with hydrate - Mass of empty beaker = 95.83 g…

Q: 3. If a student had access to a balance for this procedure, they would also be asked to weigh each…

A: • % Composition of A in mixture = Mass of AMass of Mixture x 100Given,Mass of Iron = 2.85g.Mass of…

Q: What about the percent N in the ammonia ion NH4+?

A: Ionic weight of ammonium ion, NH4+ is 18.04 amu.

Q: Given the data below, calculate the mass of copper in the original sample. Mass of original sample…

A: This question can be solved using simple subtraction.

Q: 5. Aspirin has the formula CyH3O4. How many atoms of oxygen are there in a table weighing 360 mg? a.…

A:

Q: An electric current is passed through 60.0 mL of water (H2O). This converts the water into 53.33 g…

A: Given  Volume of water = 60 mL  Mass of Oxygen  = 53.33 gram Mass of hydrogen gas  = 6.67 gram…

Q: Select the set-up for the mass % of fluorine, F, in PF3. O (27/42) x 100 O (9/42) x 100 O (19/50) x…

A:

Q: A.)What mass of cobalt contains the same number of atoms as 77.0 g of fluorine?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which accurately show the law of conservation of matter (mass)? A) when 2 oxygen molecules…

A: There is a mistake in the question. The mass of clay should be 12 gm before cutting it into two. I'm…

Q: Which observation illustrates the law of conservation of mass? O The C:O mass ratio of a particular…

A: From the given observation, which observation illustrates the law of conservation of mass = ?

Q: A tablet of Tylenol has a mass of 0.611g. It contains 251mg of its active ingredient, acetaminophen,…

A: Mass percent of acetaminophen is equal to the mass of acetaminophen divided by the mass of tablet…

Q: [References] A mixture of CuSO, and CUSO, 5 H,0 has a mass of 1.215 g. After heating to drive off…

A:

Q: The mass of a single vanadium atom is 8.46×10-23 grams. How many vanadium atoms would there be in a…

A: Density is the physical quantity that relates mass of a substance with its volume.Mathematically,…

Q: At first, it seemed like the poisoned Russian agent might have ingested thallium in the form of…

A: the minimum amount of thallium to kill an average adult= 8*102 mg concentration= 0.45m conc = no of…

Q: Calculate the mass percent composition of each of the following Part A. 6.00 g of Si and 5.55 g of O…

A: Mass percentage can be calculated using the following formula: mass percent=masstotal mass×100

Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a aluminum atom…

A:

Q: Part A Calculate the mass percent composition of iron for Fe2 O3 (hematite). Express the mass…

A: Mass percent of component = (mass of component / total mass of compound ) × 100

Q: Cu20(s) -170.7 92.4 CuO(s) -156.1 42.6 Cu(s) 33.2

A:

Q: Given the following mixture of two compounds 35.00 mL of X (MW =70.00 g/mol)(density 1.156 g/mL) and…

A: Given : volume of X = 35 mL and density of X = 1.156 g/mol Hence mass of X = density * volume =…

Q: A 37.99 gram sample of a hydrate of COCL2 was heated thoroughly in a porcelain crucible, until its…

A: Given mass of the hydrated sample of CoCl2=37.99 grams. Give mass of anhydrous sample of CoCl2…

Q: If liquid bromine has density = 3.12 g/mL, how many Br2 molecules are present in a 1.0-mL sample of…

A: Given: Density of liquid bromine (d) = 3.12 g/ml The volume of liquid bromine =1.0 ml To find:…

Q: How many water molecules are in 6.00 raindrops? Assume that there are 20.0 raindrops in 1.00 mL of…

A: Density is defined as: It is the ratio of mass per unit volume 1 mole of any chemical species…

Q: How to calculate the percent by mass of water in unknown?

A: Percent by mass is calculated by using the formula,

Q: A hydrated compound with a mass of 7.00g is heated. Its mass after heating is 5.63g. What is the…

A:

Q: If 2.00 grams of Epsom salts are allowed to dehydrate in a warm oven overnight, the mass of the…

A: Since No of mole of epsom salt (MgSO4.xH2O) will be equal to no of mole of MgSO4. On solving we…

Q: The seven most abundant ions in seawater make up morethan 99% by mass of the dissolved compounds.…

A: Since you have posted questions with multiple subparts, we will answer the first three subparts for…

Q: 2. A particular brand of beef jerky contains 0.0552 % sodium nitrite (NaNO2) by mass and is sold in…

A: Given: % NaNO2=0.0552 % 1 bag contains 8 oz sample Mass of sample= 8 x 28.35 g =226.8 g

Q: what is the mass in grams of 1.49 x 10^17 chromium atoms?

A:

Q: An analytical chemist measures the amount of Elements E and E, in four samples of an unknown…

A: A pure substance will have the same composition of the elements present in it. The percentage of…

Q: It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the…

A: Given: Mass of KF hydrate i.e. KF·nH2O = 31.43 g. And the mass of anhydrous KF after heating = 19.40…

Q: Given your experience in mass determinations and volumetric glassware, which factor used in…

A: The density can be determined by using the following formula,

Q: B. C10H1604 compound? A. Mixing NaCl with H₂O C. Wax burning Q12. Which of the following does not…

A: Question no. 12 as specified.

Q: Question 2

A: Given information:Density of copper = 8.97 g/cm3Mass of pure copper = 1.00 kg

Q: ncal Teaction: CuCl, 2H,Oc) MGlor mass, maeratia ,mass ratio You will use steel wool since it is…

A: Given reaction,  Fe (s)  +  CuCl2.2H2O (aq)    FeCl2 (aq)  +  Cu (s)  +  2H2O (l)

Q: A mole in chemistry is: a. a counting unit of 6.02 x 10²³ grams. b. a counting unit of 6.02 x 10²³…

A: We know that ,                    1 Mole = 6.023 x 10^23 atoms…

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

A:

Q: 4. A 3.5 M sample of hydrochloric acid, HCl, has a density of 1.45 g/ml. What is the mass % (wt/wt)…

A: Molarity of HCl = 3.5M = 3.5 mol/L density of HCl solution = 1.45 g/mL Assume total Volume of HCl…

Q: 1.547 grams of hydrated MgSO4 is heated in a crucible. After heating, 0.7554 grams of anhydrous…

A: We have to predict the water of hydration.

Q: What is the mass of fresh water (ρ= 1.00 g/cm3) in a 78.0 Ltank?

A: Given : density of water = 1.00 g/cm3  Volume of tank = 78.0 L

Q: 2. A student performs a separation mixture and obtains the following data: Mass (g) 75.254 g 80.524…

A: Since mass of empty beaker =75.254 g mass of beaker + mixture = 80.524 g => Mass of mixture =…

Q: The mass % of Fe in Iron III chromate (Fe2(CrO4)3) is __________.

A: The molar mass of Fe2(CrO4)3 is 459.671 g/mol. Molar mass of Fe is 55.845 g/mol But in Iron III…

Q: What is the volume of water graduated cylinder mass = 75.00 water mass = 45.00, water +bic mass =…

A:

Q: Why would the collective mass of twenty pennies not be equal to ‘20 x’ the mass of any individual…

A:

Q: a. What is the mass in grams of 5.01 x 1023 a. What is the mass in grams of 5.01 × 10° atoms of…

A:

Q: An 8.53 mg sample contains 1.72 mg of phosphorous.  What is the mass percentage of phosphorous in…

A: Given  mass of phosphorous = 1.72 mg mass of compound = 8.53 mg  Formula : mass percentage of…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.