To which series would the emitted light belong if an electron in a hydrogen atom underwent a transition from level n = 5 to level n = 1?

What is the force that caused the early earth's molten to move and flow?

A hydrate of CoCl2 with a mass of 6.00g is heated strongly. After cooling, the mass of the anhydrate is 3.27g. a) How many grams of H2O were lost from the hydrate?

A small hot-air balloon is filled with 1.00*106 L of air (d = 1.20 g/L). As the air in the balloon is heated, it expands to 1.12*106 L. What is the density of the heated air in the balloon?

What if you drop a small magnet repeatedly it become demagnetized. explain. what is happening sub-atomically?

Calculate the mass defect for beryllium-9, the only isotope of beryllium. The mass of beryllium-9 is 9.012182 amu. The mass of a proton (p11) is 1.00728 amu; the mass of a neutron (n01) is1.00866 amu, and the mass of an electron (e10) is0.00055 amu.

A) Write the formula of the conjugate base for acid HF. b) Write the name of the conjugate base found in part A.

What is the general term for a compound not containing the element carbon?

determine the specific heat of a material if a 35g sample absorbed 96 J as it was heated from 293 K to 313 K?

A compound that changes color when it comes into contact with an acid or base is an?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming all of the energy from the food was transferred into the water?