The melting point is the temperature where a solid becomes liquid. The melting point of acetone is -95°C. What state of matter would you expect to exist for actone at -96°C? solid liquid gas not enough information

What is the symbol of the element in Group 4A(14) and Period 2?

152 A 352.44 Your Answer: 155 T 362.31 Answer 153 units Gö G D 355.67 156 X 154 365.88 359.12 157 You time travel 100 years into the future and learn that several new elements have been discovered, as pictured. These elements are frequently found as oxides, and need to be separated in order to extract the pure element. Before going through this effort, it is useful to know what amount of the element can be extracted. How many moles of element A can be extracted from 175 grams of A5012? N 369.52

1) In Raiders of the Lost Ark, Indiana Jones tried to remove a gold idol from a booby-trapped pedestal.  He replaces the idol with a bag of sand.  If the idol has a mass of 2.00 kg, how many litres of sand must he place on the pedestal to keep the mass sensitive booby-trap from activating? (Density of sand is 3.00 g/cm3)

What is the average mass for hypothetical element X? 17X, with a mass of 16.97 units is 22.45% abundant and the only other isotope is 19X with a mass of 19.01 units.

Chromium reacts with oxygen to form three different compounds, X, Y and Z. It was found that, for every gram of chromium in Compounds X, Y and Z, there were 0.308 g, 0.462 g and 0.924 g of oxygen, respectively. (a) Show that the above data illustrate Dalton’s Law of Multiple Proportions.(b) Using these data, derive simple formula of compounds X, Y and Z.