What does a steam engine do?

A. Steam enters a cylinder and pushes a piston.

B. Steam causes wheels to turn.

C. Steam expands and spins an axle.

D. Steam turns a turbine.

Which equation obeys the law of conservation of mass? 2Fe + 3O2 → 2Fe2O3 4Fe + O2 → 2Fe2O3 Fe + O2 → Fe2O2 4Fe + 3O2 → 2Fe2O3

Which type of compounds required you to balance the charges?

How to find oxidation state of a compound?

Atoms of lithium (li) and cesium (cs) both lose electrons and become positive ions when they from ionic bonds. which type of atom requires more energy to become an ion? why?

What happens when an acid and a base mix? Optimization Equalization Nebul IOR Neutralization

Na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels. na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels. a. True b. False

How many protons does one atom of sulfur have

Which shows the electron configuration for zinc (Zn) ? [Kr]5s24d10 [Kr]5s24d6 [Ar]4s23d9 [Ar]4s23d10

What is the oxidation number of chromium in the ionic compound ammonium dichromate (nh4) 2cr2o7?

Draw an ecosystem with 10 biotic and 5 abiotic factor