What is in the center of an atom? what is this portion of the atom called?

Draw the diazonium cation formed when cytosine reacts with nano2 in the presence of hcl.

Which of the following has the ability to allow water to flow through

If a neutral atom has a mass of 12 amu and an atomic number of 5, determine the number of protons, neutrons, and electrons in the atom.

16. The three major types of volcanoes are

How are concentration and chemical reaction rate related? a. lower concentrations can lead to faster reactions. b. higher concentrations can lead to faster reactions. c. concentration has an unpredictable effect on reaction rate.

What is the mass (in grams) of 9.09x10^24 molecules of methanol (CH3OH) ? AND How many moles of N are in 0.183g of N2O?

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.