Gold has a half life of 7653Yrs. How many years would it take for 200g sample to be reduced to 25g?

Convert 0.0052 meters to millimeters. 0.52 millimeters 0.0000052 millimeters 5.2 millimeters 52 millimeters

Which explanation of the solar system best fits the observations of the planets and how they orbit the sun? Question 20 options: A comet hit the sun and sent off fragments that became the planets.

What bonds hold protons and neutrons together?

A compound is 2.00% H by mass, 32.7% S by mass, and 853% O by mass. What is its empirical formula? The final step is to use the mole ratios of the elements to write the empirical formula The mole ratios of the elements are: mole ratio of H:S:0 =

Area of society was strengthened by Linnaeus's contribution to science?

Calculate the molar solubility of ca (io3) 2 in each solution below. the ksp of calcium iodate is7.1 * 10-7.

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.07 m by 3.00 m by 3.77 m? Answer in units of kg.

A gas made up of atoms escapes through a pinhole 0.155 times as fast as h2 gas. write the chemical formula of the gas.

Calculate the mass percent composition of lithium in Li3PO4. A) 26.75 % B) 17.98 % C) 30.72 % D) 55.27 % E) 20.82 %

What is the golden rule of lighting safety?