Vitamin C has the formula C6H8O6.  Calculate the number of Vitamin C molecule in a 0.250g table of pure Vitamic C.

Q: A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO) solution to a reaction flask.…

A: Given: Volume is 145.0 mL 0.00260 mol/L of calcium sulfate

Q: The volume of blood ejected by the humming birds heart per beat is approximately 1cm3. The average…

A: Volume of blood ejected in one beat = 1 cm3 Volume of blood ejected in 1250 beats (1 min): Volume=1…

Q: A chemist must prepare 0.700 L of 1.00 M aqueous zinc nitrate (Zn(NO,),) working solution. He'll do…

A: Given: The concentration of the stock solution of zinc nitrate, (M1) = 6.12 mol/L=6.12 M. The…

Q: A medication calls for 750 mL of D10W1/4NS to be administered over 12 hours. Calculate the quantity,…

A: Given that : The volume of D10W1/4NS solution = 750 mL Total time = 12 hrs We have to calculate the…

Q: How many grams of N a Cl would need to be added to 558.00 grams of water to lower the freezing point…

A: Given : freezing point of solution = -12.8 oC. And mass of water i.e solvent = 558.00 g = 0.558 Kg…

Q: After sitting on a shelf for a while, a can of soda at a room temperature (69°F) s placed inside a…

A: Given: Ta = the temperature surrounding the object = temp. of refrigerator = 37oF To = initial…

Q: What volume is occupied by 4.75 moles of liquid acetone, C3H6O? (density = 0.791g/mL)

A: Given: The number of moles of C3H6O , (n)=4.75 moles. The density of C3H6O , (d)=0.791g/mL The molar…

Q: Aqueous hydrobromic Acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The balanced equation of the reaction is given and the moles of HBr and NaOH are calculated as…

Q: Cyanidin chloride (C15H11O6Cl) contains the cyanidin ion, a pigment found in many berries. Calculate…

A: Here, we have to calculate number of moles of cyanidin chloride present in 7.2 mg.

Q: The sulfur in an 8-tablet sample of the hypnotic drug captodiamine, C21H29NS2 (359.6 g/mol) was…

A: Given :  Molar mass of captodiamine = 359.6 gm/mol  Mass of BaSO4 recovered = 0.3343 g  molar mass…

Q: the us national institute of standards and technology used mercury gauge as a primary standard for…

A: given, mass of mercury = 225 kilogram = 225000 grams density of mercury = 13.6 g/mL

Q: A sample of O2 gas at a given temperature and pressure has a density of 1.30 g/L. What is the…

A:

Q: How many grams of Xe are contained in 454 mL?

A: Density of a substance is given as the mass per unit volume. The density is directly proportional to…

Q: Calculate the volume in in3 of a 5.0 kg bar of copper.

A: The relation between volume and mass is given as: Density = mass/volume So, volume = mass/density…

Q: If ammonia is dissolved in water and the total weights are 80 g at 19%, what are the weights of…

A: The mass of the solution is = 80 g The percent concentration of the solution is = 19 % The weight of…

Q: The physical fitness of athletes is measured by “VO2 max,”which is the maximum volume of oxygen…

A: Given, VO2 max for an average male = 45 ml VO2 max for a world-class male athlete = 88.0 ml (a) Mass…

Q: A chemist makes 320. mL of calcium sulfate (CaSO,) working solution by adding distilled water to…

A:

Q: In a butane lighter, 9.8 gg of butane combines with 35.1 gg of oxygen to form 29.6 gg carbon dioxide…

A:

Q: Which of the following shows an accurate representation of a sample of gas containing hydrogen and…

A: We are given a sample of gas containing both hydrogen gas and oxygen gas. Also we are given 4…

Q: A chemist prepares a solution of magnesium fluoride (MgF,) by measuring out 0.0118 µmol of magnesium…

A:

Q: A chemist determines by measurements that 0.035 moles of chlorine gas participate in a chemical…

A: Moles of Cl2= 0.035 moles  Molar mass = 70.90 g mol-1 Then,

Q: What is the symbol for the quantity defined by this expression: - log [H3O+]

A: This expression tells that the blank is the negative logarithm of the hydronium ion concentration.…

Q: DNA crystals are 0.144nm^3. What is the volume in milliliters?

A: Given volume of DNA crystal is 0.144 nm3. We have to convert the volume to mililiters.

Q: The normalty of 0.14 mol/L Al2O3

A: When molarity is multiplied by the n- factor we get normality. Al2O3 has the n-factor of 6.

Q: A chemist prepares a solution of mercury(1) iodide (Hgl,) by measuring out 0.01l g of mercury)…

A:

Q: What volume of nitrogen gas (N2) is equal to 3.42x10^22 molecules

A: At STP:- 1 mol N2= 22.4L 1 mol N2= 6.022 x 1023 N2 molecules  6.022 x 1023 N2 molecules = 22.4 L…

Q: A sample of O2 gas at a given temperature and pressure has a density of 1.30 g/L. What is the…

A: Density of O2 = 1.30 g/L Molar Mass of O2 =32 g/mol Density of C3H8 = unknown Molar mass of C3H8 =…

Q: Nitrogen and oxygen combine to form nitric oxide: N2 + C O2 → 2NO. Name the law used for the…

A: Nitric acid chemically denoted as NO is a colorless gas and is one of the major oxides of nitrogen.…

Q: Given: Ammonia Density of Ammonia: 0.73 kg/m³ Atomic Weights: H=1; C=12 ; N=14 ; O=16 ; Na=23 ;…

A:

Q: 1 Sr(NO3)2 (aq) with 9.8 X 10" aq)? of the following is entirely 3.5 x 107, ppt forms 2.5 x 10-11,…

A: SrF2 ----> Sr2+(aq.) + 2F-(aq.) Reaction Quotient  Qsp = (6.6×10-2)(9.8×10-6)2 = 6.34 ×10-12

Q: Q10. How many moles of point to 102 degC? The r Assume that the density c

A: When a non volatile solute is dissolved in a solvent, its boiling point is raised. And the elevation…

Q: A) H.PO. B) H:PO. С) НРО D) H:CO H:PO, +H HPO. +H* PO + H* HCO + H

A: We wil identify intracellular buffer

Q: Sulfur dioxide gas, SO₂(g), contributes to acid rain. Natural sources of sulfur dioxide include…

A:

Q: 1. HNO,„H,SO, 2. СH, CІ, AICI,

A: The first step reaction is the nitration of benzene : Nitration happens when one (or more) of the…

Q: A chemist must prepare 0.250 L of 1.00 M aqueous sodium carbonate (Na, CO, working solution. He'll…

A:

Q: A chemist prepares a solution of calcium sulfate (CASO) by weighing out 0.06781 g of calcium sulfate…

A:

Q: The distance from Earth to the Sun is 1.50 x 10 km. What is the distance expressed in gigameters?…

A: Convert Km to Gm ---

Q: 13.2. A blimp rises because it is filled with Helium gas which has a smaller molecular mass than air…

A: The expression of the ideal gas equation as follows: PV = nRT

Q: You wish to prepare 200 grams of 12.9 % NH,CH3COO. You will need grams of ammonium acetate and mL of…

A: In order to determine the concentration of any chemical species various terms can be used.…

Q: A sample of clean, dry air is found to be 20.9% oxygen by volume. How many milliliters of oxygen are…

A: % volume by volume =( volume of solute/ volume of solution )×100 volume of oxygen = 20.9%

Q: hite) + 3H2 +49.03kJ C6H6 cation:

A: Mass of carbon = 5.81 g Moles of Carbon = 5.81/12 = 0.484 mol □H = = 49.03 kJ

Q: x256Lr → 101yMd + 24HE

A: Given : Incomplete nuclear reaction.  To find : values of x and y. Solution : As we know that, in…

Q: Confused

A: It is required to calculate, to what height above the surface, in km, will the mini marshmallow…

Q: Which is not a physical property of chlorine? The color of gaseous chorine is green. Chlorine…

A: A physical property is any property that is measurable without changing the composition of matter.…

Q: How many units between the freezing point and boiling point of water do two of the three temperature…

A: As we know that three common temperature scales in use today are the Fahrenheit, Celsius, and Kelvin…

Q: What is the standard 2C5H10(1) + 1502(g

A: Change of enthalpy during the formation of 1 mole of the substance from its constituent elements…

Q: A chemist prepares a solution of magnesium fluoride (MgF,) by measuring out 0.0152 µmol of magnesium…

A: Given that,  Moles of MgF2 added to 200 mL(= 0.2 L) flask = 0.0152 µmol = 0.0152×10-6 mol

Q: A 1.06 den silk fiber has reached its maximum tenacity value. How many grams (force) would it take…

A: Given: Specification of silk fiber = 1.06 den It has reached maximum tenacity value. We know that,…

Q: How many gallons of octane, C3H18, having a density of 0.703 g/cm3, would have to be burnec

A:

Q: A chemist adds 400.0 mL of a 3.3 mol/L silver nitrate (AGN0,) solution to a reaction flask.…

A: The molarity is a unit of concentration of a solution. It is defned as the number of moles of solute…