What is the atomic number of an element whose atoms each contain 47 protons, 60 neutrons, and 47 electrons?

If electrons in an atom have the lowest possible energies, the atom in the ground state inert state normal state excited state

Neptunium-237 undergoes a series of α-particle and β-particle productions to end up as thallium-205. How many α particles and β particles are produced in the complete decay series? α particles β particles?

The flame is lit on a hot-air balloon, and it floats up into the sky. This is an example of what kind of energy conversion?

What do the symbols in parenthesis indicate? C7H16 (l) + 11O2 (g) 7CO2 (g) + 8H2O (l) a the physical state of each reactant and product b the catalyst used in the reaction c the number of atoms of each reactant and product d the unit of reactant and

A student decomposed a 1.25 gram sample of impure kclo3 (mm=122.5) and obtained 0.32 grams of oxygen. what is the percent purity of the original sample

A solution is made by dissolving 25.20 g of aluminum acetate in 185.0 mL of water. What is the concentration of acetate ions?

Which best describes how sediment forms? erosion breaks down rock and other material molten rock cools above earths surface loose material is cemented by pressure chemical changes cause sediment to compact together

How will you know whether a solution is saturated or supersaturated?

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.