Armaans Armaans

14-10-2022
Chemistry

Answered

A new element (E) has been discovered to have two naturally occurring isotopes, E216 and E
219. If the average isotopic mass of E is 217.00 grams/mol, what is the percent abundance of each isotope?

I need help please?

Answer :

Other Questions

Fictitious element Az has two common isotopes. What is the average atomic mass (in amu) of Az given that seven-ninth of the isotopes have a mass of 325.2 amu, w

What is the molecular formula of a compound that has an empirical formula of CO4 and a mass of 228 g/mol. 2. What is the simplest form for C4H24O12

What is the mass of H3BO3 in grams that is produced from the reaction of 39.2 g of B₂H, in excess water? Molar masses are given below. MM H3BO3 = 61.834 g/mol

Mass = 16.0 g Volume = 4.0 cm3.A student finds the mass of the sample to be 17.5 grams. What is the student's approximate percent deviation (percentage of error

Consider the reactions: A-2Β ΔΗ1 A-3C ΔΗ2 What is AH for the reaction 2B-3C? ΟΔΗ1 + ΔΗ2 Ο ΔΗ2 - ΔΗ1 Ο 2x (ΔΗ1 + ΔΗ2) Ο ΔΗ1 – ΔΗ2

For the reaction: 2 A (g) + B (s) ⇌ 2 C (s) + D (g) Kp = 8210 At 298 K in a 10.0 L vessel, the known equilibrium values are as follows: 0.021 atm of A, 0.22 mol

In the following equation, how many grams of O2 are needed to react with 24.0 g of NH3? 4 NH3(g)+302(g) → 2N2(g)+6H₂O(1) a) 45.1 b) 22.6 c) 33.9 d) 45.0 e) 135.

The Lewis dot model of a molecule is shown. H c=o H Based on the model, which of the following is true? (5 points) O a Ob Oc d Oxygen is the least electronegati

The Lewis dot model of a molecule is shown. H c=o H Based on the model, which of the following is true? (5 points) O a Ob Oc d Oxygen is the least electronegati

1. What causes convection currents to form in the ocean? Differences in water density Differences in water depths Differences in water quality 2. Which of the f