Examine the odd numbered elements. For example step through the odd numbered elements between atomic numbers 31 and 51. Which of the following is true? Isotopes of odd numbered elements usually have even mass numbers O Isotopes of odd numbered elements usually have odd mass numbers It is also interesting to explore how the number of stable isotopes an element has depends on atomic number. Explore the trend of number of stable isotopes vs. atomic number by stepping through each atomic number and noting how many isotopes are displayed for each. It is not necessary to click on any of the radio buttons. Which of the following trends is observed? Elements with even atomic numbers have more isotopes than elements with odd atomic numbers. Elements with odd atomic numbers have more isotopes than elements with even atomic numbers.

9. A hypothetical element (Engineerium, En) has 2 stable isotopes: 123 En and 125 En. If the average atomic weight of En is 124.27 amu, what is the isotopic abundance of each of the stable isotopes?

Question : A sample of a compound has a mass of 41.13 g. The sample is found to contain 37.28 g of carbon and 3.85 g of hydrogen. What is the percentage composition of the compound? 90.6% carbon and 9.4% hydrogen O9.4% carbon and 90.6% hydrogen O 13.3% carbon and 10.8% hydrogen 90.6% carbon and 4.7% hydrogen O 3.1% carbon and 3.8% hydrogen Question 4 Which substance contains the greatest amount (in moles)? 8 g of hydrogen, H2 28 g of nitrogen, N2 35 g of chlorine, Cl2 4g of methane, CH4 Question 6 How many grams are there in 0.0042 mol of sodium oxide, Na, 0? 0.26 g 0.16 g O26.1 g 0.0026 g 260 g Show transcribed data

why didnt you convert to kelvin with temperature.   this confuses me because h has the units kelvin   could you please plug in units and show me how they cancel?

check the image for question

4. Argon has 3 stable isotopes: 36 Ar, 38 Ar, and 40 Ar with natural abundances of 0.3365%, 0.0632%, and 99.6003% respectively. The atomic weights of these 3 isotopes are 35.9675 amu, 37.9627 amu, and 39.9624 amu respectively. Calculate the average atomic weight of Ar.

Q2. Use the SEMF to obtain an expression for the Z value of the isobar which will have the lowest mass for a given value of A. Hence, determine which nuclide with A = 103 is predicted to be the most stable.