Calculate the atomic mass of Carbon:
Calculate the atomic mass of Carbon: 11. Calculate the atomic mass of Carbon 12C 14, 1"C...
Calculate the atomic weight of element carbon (C), and element uranium (U). The isotope abundance: 12C, 98.90%; 13C (13.00335 amu), 1.10%; 238U (238.05078 amu), 99.28%; 235U (235.04392 amu), 0.72%, assuming 14C and 234U are negligible.
3. Use the following table of data to calculate the molar mass of naturally occurring carbon: Isotope 12C Isotopic Molar Mass (g mol'') 12.00000 13.00336 Abundance (%) 98.93 13C 1.07
(1): Do you expect the mass of 12C and 13C the same? if not, how do we report "average atomic mass" for carbon? what additional information we need to get the average atomic mass for carbon? (1b) If an element has two isotopes, for example 12C, and 13C, list what they have in common and list what they differ.
Radioactive Carbon-11 has a half life of only 20.3 minutes and an atomic mass number of 11 u. Calculate the activity of 3.58 g of Carbon-11. Answer should be in Bq.
(c) Calculate the mass of the 1 electron gained by chloride anion in atomic mass units
1. The remains of a pre-historic human are found. The mass of carbon in the sample is 8.5kg. The activity i.e. the number of decays per second is 700 decays/second. In living matter the ratio of 14c/?C=1.3. 10-12 14C is radioactive, whereas 12C is stable. Carbon's atomic mass is 12g per 6.02.102 atoms. The halflife of carbon is 5730 years. Make sure to label the different parts of your answer! a) How many carbon atoms are in the sample? b)...
The ions entering the mass spectrometer have the same charges. After being accelerated through a potential difference of 2.30 KV. singly charged 12ction moves in a circle of radius 111 cm in the magnetic field of a mass spectrometer. What is the magnitude of the field? Use these atomic mass values: 12c, 12.0 u: 14C, 14.0 u: 160, 15.99 u. The conversion between atomic mass units and kilograms is 1 u = 1.66 x 10-27 kg T
HELP PLEASE ITS ON ATOMIC MASS AND NUCLEAR PROCESSES thanks ˝ Astronomy homework - due Friday, Express all your answer in atomic mass units, u (See below.) There is another fusion process for converting hydrogen into helium in stars that have a mass of more than 1.5 M , where 1 M represents the mass of the sun. I've indicated some of the steps in this process below but left out one of the by-products of each reaction. Please determine...
please explain too 1) There is 1.3 radioactive carbon-14 atoms for every trillion carbon atoms in living organisms. Carbon-14 beta decays to nitrogen-14 with a half-life of 5730 years. (a) What is the activity due to carbon-14 in a 5o kg person? (Assume that 18% of the mass is carbon.) (b) Calculate Q for the decay. (c) what is the annual radiation done that a pernon e.eives fion their own arn-ht thenua C 14.003242 u N 14.003074 u 1) There...
Use the average atomic mass to calculate the mass in grams present in 5.10 x 10 mol of calcium. b Use the average atomic mass to calculate the mass in grams present in 1.05 millimol of boron, c Use the average atomic mass to calculate the mass in grams present in 101 mol of aluminum a Use the average atomic mass to calculate the number of moles of the element present in 6.55 g of neon mol b Use the...