What are the mass of protons and neutrons

3. Besides the major types of radioactive decay, there are two others: positron emission and electron capture. • Compare and contrast positrons with electrons. • Explain how positron emission works and how it causes transmutations.

What is the definition of a gas

Fourth period metalliod a very semiconductor material

Which group of elements is the most unreactive? Why?

Starting with benzene as the only aromatic compound available, synthesis the following compound using any necessaryreagents. Will the compound form a stable carbo-cation when treated withconcentrated sulfuric acid? Fully justify your answer.

Which substance is the most soluble at 28°C?

Predict the major product (s) formed when hexanoyl chloride is treated with excess etmgbr, followed by h2o.

Classify the properties based on whether they describe metals or nonmetals. They are good conductors of heat and electricity. They are brittle and break into sharp pieces. They are flexible and can be made into wires.

A gas occupies a 1.5 L container at 25 degrees Celsius and 2.0 atm. If the gas is transferred to a 3.0 L container at the same temperature, what will be its new pressure? a) 3.0 atm b) 2.0 atm c) 1.0 atm d) 4.0 atm

The maximum amount of n2h4 (hydrazine) that can be prepared from 14 grams of nitrogen and 28 grams of hydrogen by the reaction n2 + 2 h2 = n2h4 is?