0 Element X has 2 naturally occurring isotopes. The first isotope has an
atomic mass of 44.00 amu and its natural abundance is 74.18%. The
second isotope has an atomic mass of 41.10 amu. What is the atomic mass
of Element X? (round up your answer to 4 significant figure) *

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt