4. From 1940, there have been four main laboratories that have worked to produce elements with atomic numbers greater than 92. Describe what IUPAC’s role would be in such a situation. Points to consider include:
- What are the criteria that must be followed for an element to be made?
- How does the element name get chosen? And who is allowed to choose?
- Which scientist is given the credit for making the element?

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

The rules of engagement (roe) working group is often used to (select all that apply.)