true
Chemistry, 10.10.2019 18:30 dazzlecaptain212
Different isotopes are used to find the age of artifacts older than 60,000 years
true
or
false
Answers: 1
Chemistry, 22.06.2019 09:30
Why do cells appear different in distilled water than they do in 10% salt water?
Answers: 2
Chemistry, 22.06.2019 12:00
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Different isotopes are used to find the age of artifacts older than 60,000 years
true
true
Physics, 29.08.2019 14:00
Health, 29.08.2019 14:00
Mathematics, 29.08.2019 14:00
Mathematics, 29.08.2019 14:00
Spanish, 29.08.2019 14:00
Chemistry, 29.08.2019 14:00
Social Studies, 29.08.2019 14:00
English, 29.08.2019 14:00