A. Convert the following Fahrenheit temperatures to Celsius (you may use a calculator): 98.6°F (normal body temperature)

68°F (room temperature)

20°F (a cold day)

b. Convert the following Celsius temperatures to Fahrenheit:
10°C

30°C

-40°C (that’s cold!)

What material does not melt at any temperature

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

Agroup of students working in a high school chemistry lab believe they have discovered a new element! how exciting! upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons. 1. what is the atomic number of this element? ¬¬ 2. what is the mass number of this element? 3. is this really a new element? explain your reasoning. 4. give the name and symbol for this 5. when the students discovered it, did they find a solid, a liquid, or a gas? explain your reasoning.