11 A sample of CO2 (s) and a sample of CO2 (g) differ in their

(1) chemical compositions

(2) empirical formulas

(3) molecular structures

(4) physical properties

What is the identity of the resulting atom

The energy that is transferred due to a temperature difference

Give the correct nuclide symbol for gallium-71. How many protons and neutrons are in this isotope?

Calculate the lattice energy for NaF (s) given the following sublimation of energy + 109 kj/mol Hf for F (g) + 77 kj/mol first ionization energy of Na (g) + 495 electron affinity of F (g) - 328 enthalpy of formation of NaF (s) - 570 kj/mol A.

A family visiting Europe goes to the hospital because their child is sick. The child has a temperature of 39.0 C. Calculate the temperature in degree F.

What are the primary elements of the earths layres?

How long does it usually take fir a rock to undergo a stage within the rock cycle

Calculate the ph of a solution formed by mixing 150.0 ml of 0.10 m hc7h5o2 with 100.0 ml of 0.30 m nac7h5o2. The ka for hc7h5o2 is 6.5 * 10-5.

Lead (ii) carbonate decomposes to give lead (ii) oxide and carbon dioxide: pbco3 (s) ? pbo (s) + co2 (g) how many grams of lead (ii) oxide will be produced by the decomposition of 2.50 g of lead (ii) carbonate?

Galena, a mineral of lead, is a compound of the metal with sulfur. Analysis shows that a 234-9 sample of galena contains 203 g of lead.