Select all the items on the following list that are ions.

cu

po4-3

hco3-

al+3

hg2+2

na2co3

fe

zn

Which of these does not describe the wright brothers first attempts at flight

Why does a group of warmer atoms take up more volume than a group of cooler atoms?

When aluminum is mixed with iron ii oxide iron metal and aluminum oxide?

Which statement could best be concluded from the ideal gas law?

If 1.0g of rubidium and 1.0 g of bromine are reacted what will be left in measurable amounts in the reaction

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these

What is the mass of a box of nails

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy

How many Joules are equivalent to 75 Calories?