During transmutation the number of (protons, neutrons) always (increases, decreases).

What was Johann Dobereiner's contribution to the development of the periodic table? He arranged the elements according to increasing atomic mass. He arranged the elements according to increasing atomic number.

How many molecules of substance B are produced when 29.3g of substance A reacts? The molar mass of substance A is 19.2g/mol. Convert the mass of A to moles. moles of A: Step 2: Convert the number of moles of A to the number of moles of B.

Identifying Isotopes Identify the parent isotope and daughter isotope in this nuclear reaction: Ram Rn + He Which is the parent isotope?

Which sentence describes two atoms that form an ionic bond? O A. Each atom has a large electronegativity. B. Each atom has a small electronegativity. O C. The difference in their electronegativities is less than 1.7. O D.

The addition of which substance will decrease the solubility of AgNO3 in water? 1) 0.1 M potassium chloride 2) 0.1 M barium chloride 3) 0.1 M sodium nitrate 4) 0.1 M sodium carbonate

Which part of the body does colchicine affect the most

Balance and identity the type of chemical reactions. Mg (s) + HNO3 (aq) - > H2 (g) + Mg (NO3) 2 (aq)

Which radioactive element is used to determine the absolute age of late pleistocene animal remains?

Compare the practical uses and limitations of nuclear fission and fusion. Include in your answer a detailed description of the two processes, comparing and contrasting them in terms of the types of atoms involved, the conditions needed to get the

Why can two igneous rocks have the same minerals but different names?