Who extended the idea that the mass of the atom was concentrated within the nucleus?

What creates the charge in an electrical current? Electrons Protons Neutrons Protons and Neutrons

A car with a 14 gallon gas tank gets 22 miles per gallon. How far can the car travel on a full tank of gas?

What is group 18 of the periodic table called?

A 4.000 g sample of iron was heated from 0.0°C to 21.0°C. If it has a specific heat of 0.440 kJ/kg °C, how many kilojoules of heat does it absorb?

The student uses 25.0cm3 of 1.60mol/dm3 sodium hydroxide to prepare the crystals. 2NaOH (aq) + H2SO4+8H2O->Na2SO4 10H2O Calculate the maximum mass of hydrated sodium sulfate crystals that can be formed

How many atoms are in a sample of 68.7 grams copper (Cu) ?

What is the mass of 3 L of water vapor at 120◦C and 388 torr?

List three things you would need to consider to determine whether or not a chemical system is at equilibrium?

How many moles of methane gas molecules, CH4, are in 11.2 liters of methane at standard conditions? a. 11.2 moles b. 27.2 moles c. 179.2 moles d. 0.5 moles

The valve between a 2.00-L bulb, in which the gas pressure is 1.80 atm, and a 3.00-L bulb, in which the gas pressure is 3.40 atm, is opened. What is the final pressure in the two bulbs, the temperature remaining constant?