The half-life of 131I is 8.021 days. What fraction of a sample of 131I remains after 24.063 days

How does the movement of particles of matter change when matter goes from solid to liquid?

The sum of pH and pOH for any aqueous solution equals

An 8.50 grams block of aluminum is heated with 54.98 kJ of energy. The temperature changed from 22.8 C to 94.6 C. What is the specific heat capacity of aluminum?

Which law states that at constant temperature the pressure of a given amount of gas in inversely proportional to the volume of the gas? Combined gas law Gay-Lussac's law Charles's law Boyle's law Ideal gas law

What people were involved in the abolitionist movement w / Frederick Douglass?

Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it? weak acid Strong base strong acid weak base

The standard enthapy of combustion of solid urea co (nh2) 2 is - 632kjmol-1 at 298k

What happens to an isotopes during radioactive

Why does the effective nuclear charge increase across a row of the periodic table?

Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?