True or false: density multiplied by volume equals mass.
True or false: moles multiplied by molecular weight equals grams.
True or false: moles divided by molecular weight equals grams.
1)
Unit of density is g/mL
Unit of volume is mL
So,
Density * volume
= g/mL * mL
= g
This is unit of mass
Answer: True
2)
Unit of mol is mol
Unit of molecular weight is g/mol
So,
Mol * molecular weight
= mol * g/mol
= g
This is unit of mass
Answer: True
3)
Unit of mol is mol
Unit of molecular weight is g/mol
So,
Mol * molecular weight
= mol / g/mol
= mol^2/g
This is not unit of mass
Answer: False
True or false: density multiplied by volume equals mass. True or false: moles multiplied by molecular...
Dichloroethane CH.CI (Given: density - 1.25 g/mL) Molecular Weight Volume of Sample (read meniscus) = 22.0 mL Mass of Sample (use given density and volume) = Moles in Sample = Molecules = Total Atoms =
The mass unit associated with density is usually grams. If the volume (in mL or cm3) is multiplied by the density (g/mL or g/cm3) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation. If a large marshmallow has a volume of 2.00 in3 and density of 0.242 g/cm3, how much would it weigh in grams? 1 in3=16.39 cm3
How many moles of benzaldehyde (density d = 1.04 g/ml), (molecular weight mw = 106.12 g/mol) are required to react with 1.0 ml of acetone: (density d = 0.79 g/ml), (molecular weight mw = 58.08 g/mol)? 6. What is approximate theoretical yield for problem # 5 if you obtained 2.1 grams of dibenzylidene acetone (mw = 234.29 g/mol)?
b. What are its units? Is Density, extensive or intensive? C. 23. (True/ False) a) Physical Properties include color, melting point, solubility, and physical state at a specified temperature. (True/ False) b) Density= mass/weight. (True/ False) c) Extensive properties, such as mass and volume, depend on the size of the matter sample. (True/False) d) Density is not one of the physical properties of matter. (True/ False) 24. A weather balloon is inflated to a volume of 2.2 x 10 L...
calculate the molecular weight, mass, moles, theoretical mass,
& theoretical moles for C5H11OH, HCl (12M), & C5H11Cl
(IGNORE NUMBERS IN BOX)
CH3 H3C-CH2-C-OH + HCI -> A CH3 CH₃ CH₂ - CH2 - HyC-CH2-C2H CH₃-CH₂-C-HCO3 C CH3 -CH2=C-C! NODOHCOCO CHE CH₃ --NaCl molecular 88.148 34.460 106.59 Weight mass moles theoretical mass theoretical moles SECLOH NU. CH3 H₃C-CH₂-C-OH CH₃ CH₃ H3C-CH2-C-OH 1 CH2 - CHE CH3 CH₂H CH3 CH3-CH2-C-HCO3( CH3-CH2=c-4! Nенсое CH₃ CH3 - NaCl 34.460 106.59 molecular 88.148 weight mass...
I multiplied the concentration
of solute x volume of solution molar mass and got = 41241.123
grams; this does not seem right.
ow many grams of solute are present in 495 mL of 0.700 M KBr? Number
all of them please!!!!!
12. What is the volume, in liters, of 12.0 moles of bromine? Bromine is a liquid at room temperature and has a density of 3.12 g/cm 13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51x10 L? UNITS 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D=1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If...
Density is equal to the mass of a substance divided by its volume: density = mass of substance/volume of substance Water displacement can be used to find the volume of a solid by placing the object in a known volume of water. When the object is added to water, the measured total volume increases. This final volume is equal to the volume of the initial water plus the volume of the solid object added. To determine the volume of the...
for question #5, i divided #3 and #4 and then multiplied by
100. the answer the last expert gave me with the correct sig figs
was 5.431 and it was incorrect. ive tried different variations of
the answer and i am still getting it wrong. please help
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure except only a single titration was performed which required 15.04 mL of 0.100 M Na S203. The...
1) For the following determine the molecular weight and the molar mass. Round all mass to two decimal points. (5) Substance Melecular weight am Molar mass (g) LiP MON ZASO, Nichek) nitrate Irell) phosphate For the following mole calculations use dimensional analysis, showing the canceling of the units, and retain in your answer the number of significant figures in the measurements that is initially given to you. 2) Convert the following mass values to moles or mole values to masses....