Which element is very toxic and reactive green gas?

What does 54 in mn-54 represent

Complete combustion of 7.40 g of a hydrocarbon produced 23.8 g of co2 and 8.11 g of h2o. what is the empirical formula for the hydrocarbon?

Which electron transition represents a gain of energy? A. from 2nd to 3rd shell B. from 2nd to 1st shell C. from 3rd to 2nd shell D. from 3rd to 1st shell

What is the smallest part of an element?

Water will evaporate rapidly at higher temperatures. What effect would the evaporation of water have on the temperature at which hyou observed the formation of crystals if you performed the experiment at higher temperatures? Explain your reasoning.

What source provides most of the energy consumed in the United States?

One way to experimentally measure the heat capacity of a Styrofoam cup calorimeter would be to melt a known mass of ice in warm water and measure hte temperature change.

For which gases does the ratio of PV to RT equal a constant? A. gases of very low temperature B. real gases C. gases at very high pressure D. ideal gases

Calculate how many Calories would be found in a breakfast consisting of the following: two eggs two pieces of toast buttered with one tablespoon of butter one 9 oz glass of orange juice

What are the electron configurations of an electrically neutral atom of sodium, electrically neutral atom of neon, and electrically neutral atom of oxygen?