If the pressure is held constant and a balloon decreases in volume what is the sign of work?

What is the most likely electronegativity value for a metallic element? (1) 1.3 (2) 2.7 (3) 3.4 (4) 4.0

What mass of lithium phosphate is needed to prepare 500. ml of a solution having a lithium ion concentration of 0.125 m?

Can you make alcohol by putting abunch of cut up fruits in a bag for about 2 weeks?

11. are the horizontal rows on the periodic table. a. Periods c. Columns b. Groups (Families) d. Halogens

How would the equilibrium of an exothermic reaction at 25°c be affected if the temperature of the system were reduced? (hint: apply le chatelier's principle) ?

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?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False