What is the atomic number of zirconium? 39 40 41 42

The transfer of energy between algae and herbivores is about 5 percent. 10 percent. 2 percent. 1 percent.

Which element would have a similar chemical reaction as lithium (Li) ? * Carbon (C) Helium (He) Sodium (Na) Beryllium (Be)

At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3: 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g) ΔH = - 89.4 kJThe decomposition of KClO3 proceeds spontaneously when it is heated.

How to treat stream water for drinking

The decay curve shown below approximates the decay of phosphorus-32. what is the approximate half-life of phosphorus-32?

Chemical reactions are used to produce a variety of products, such as

How many grams are in 0.21mol sample of ethyl alcohol?

What is the scientific equesion to make antimatter?

How many molecules of molecular oxygen react with four molecules of NH3 to form four molecules of nitrogen monoxide and six molecules of water?

How many unchanged atoms would remain after 3 half-lives if the initial sample had 600 atoms? Explain.