The electronic configuration of an element is 1s22s22p6. How many valence electrons does it have? 2 4 6 8

What is the role of shrimp with respect to salmon in him food chain A. Predator B. Prey C. Parasite D. Host

relationships exist between the algae and coral?

Is ice and salt endothermic or exothermic

What is the equilibrium associated with ka3 for h3po4?

How many moles are there in 64 molecules of carbon

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?