6. Radium decomposes at a rate proportional to the amount present. In 100 years, 100 mg of radium decompose to 96 mg. How many mg will be left after another 100 years? What is the "half life" (the time required to decompose half the initial amount) of radium?

Q: The term BOD stands for:   A) Biological Oxygen Demand B) Biochemical Oxygen Demand C) Biological…

A: Biochemical Oxygen Demand (BOD) is a key environmental indicator used to assess water quality.…

Q: Calcium has an FCC crystal structure, density of 1.55 Mg/m3, and atomic massof 40.08 g/mole.a.…

A: Given: The density of the material is ρ=1.55×106 gm3. The atomic mass of the element is A is A=40.08…

Q: It is seen that solids and liquids will have different coefficients of volume expansions for…

A: Coefficient of volume expansion:- The unit increase in the unit volume of any substance following…

Q: An elementary particle produced in a laboratory experiment travels 0.319 mm through the lab at a…

A: Step 1:Distance travelled by the elementary particle is 0.319mmRelative speed is 0.953cStep 2:The…

Q: What is the mass fraction of Sugar (C12H22O11) in a 0.6 molality (mol/kg) solution? How much more…

A:

Q: In an ion exchange process, which ion has a higher affinity for exchange: Potassium ions (K+) or…

A: Calcium ions has a very high affinity. According to the  general principles  The higher the charge,…

Q: We have an initial amount of H3N2Cl4 of 72 milligrams, and a half-life of 60 days. Find the decay…

A: With the help of the exponential curve growth and decay graph, we can analyze the material decay at…

Structure of materials

The word ‘structure’ means the thing that is built or constructed from combining the different interrelated parts on a definite location on the ground surface. The structure should be able to possess sufficient rigidity against the external loads that are applied to it.