A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope.

The compound bao absorbs water and carbon dioxide readily and is used to dry gases and organic solvents. What is its name?

Consider the following specific heats: copper, 0.384 J/g· ◦C; lead, 0.159 J/g· ◦C; water, 4.18 J/g· ◦C; glass, 0.502 J/g· ◦C.

How do you actually know the chemical formulae for the ionic compound

Convert 25.0g of KMnO4 to moles

The atomic masses of the two stable isotopes of boron; boron-10 (natural abundance:19.78%) and boron-11 (natural abundance:80.22%) are 10.0129 amu and 11.0093 amu, respectively. calculate the average atomic mass of boron 10.41 amu 10.95 amu 10.

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.