When a radioactive atom emits an alpha particle, the original atom's atomic number decreases by four.

What type of potential energy does a stretched rubber band have? -Mechanical Kinetic energy -Chemical Potential energy -Elastic Potential energy -Electromagnetic energy

What is Grxn for the equation below? NaOH (aq) + HCl (aq) H2O (l) + NaCl (aq) -82.5 kJ -29.7 kJ 26,500 kJ 27,000 kJ

An isotope undergoes radioactive decay by emitting radiation that has a - 1 charge. What other characteristic does the radiation have? some shielding required no mass large mass high penetrating power

Consider the reaction A ⟶Products Use the following rate data to determine the order of the reaction with respect to the reactant A. [A] (M) Initial Rate (M/s) 0.10 0.015 0.20 0.015 0 1 2 3

Select all the discoveries for which ernest rutherford is credited. the emissions of radioactive elements the neutron the electron the proton

Is material that has a density of 0.2g/ml good for building a bridge or for making couch cushions

A solution of potassium cyanide, KCN, is made by dissolving 3.2 g of KCN in water. When this solution reacts with excess hydrochloric acid, HCl, it produces 0.30 g of poisonous hydrogen cyanide gas, HCN.

When carbon undergoes sp2 hybridization it forms

Give the formula for molarity

A 54-gram sample of an unknown material has a volume equal to 20 cm3. Based on its density, could the sample be aluminum? Explain