What is the net charge of an element that has 15 protons, 17 neutrons and 18 electrons?

Using the combined gas law, if the volume of a gas at 155kPa changes from 22L to 10L. What is the new pressure if the temperature remains constant?

In 3-5 sentences, tell what would likely happen to water, plants, and animals if Earth was closer to the sun than it is today.

What are the superheavy elements and where are they located on the periodic table

7. While prospecting in the North Woods, Joe found a gold nugget which had a density of 19.2 g/cm3. Joe dropped the gold into water in a graduated cylinder, the water level increased by 15.0 mL. How many grams of gold did he have? (Ans: 288 g)

Calculate the work (kJ) done during a reaction in which the internal volume expands from 18 L to 49 L against a vacuum (an outside pressure of 0 atm).

When delta h is negative the reaction will be endothermic?

Why the atoms k2so4 bond

Whats the relationship between the temperature and the density of a substance

If you can smell a cleaning solution from across the room, you are experiencing the result of which liquid property? viscosity surface tension cleavage planes volatility

What is the effect of 1 mol dm-3 hydrochloric acid on a bulb? Explain why this effect happens.