Please help :)

complete the following nuclear equations and identify x in each case:

What is the chemical formula of the following compound

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph