On a mission to a newly discovered planet, an astronaut finds gallium abundances of 61.29 % for 69Ga and 39.71 % for 71Ga. What is the atomic mass of gallium for this location? The mass of 69Ga is 68.7200 amu. The mass of 71Ga is 70.9200 amu.

The cardiovascular system consist of

Are the following statements true or false? A. Two pi bonds comprise a double bond. B. Bonds formed from atomic p orbitals are always sigma bonds. C. Side-to-side overlap results in a bond with electron density above and below the bond axis. D.

4. A burning candle is an example of a chemical reaction taking place. What i can be inferred about this reaction? Choose the correct answer." A. Mass is not conserved. B. The reaction absorbs energy. C. The reaction releases energy D.

Here is a question of the Extreme Ice Survey 1) What inspired James Balog to do the Extreme Ice Survey?

What is the volume of a container that holds 25.0 g of carbon dioxide gas at stp?

At 25C, K = 0.090 for the reaction:H2O (g) + Cl2O (g) 2HOCl (g) Calculate the concentrations of all species at equilibrium for eachof the following cases: (a) 1.0g H2O and 2.0g Cl2O are mixed in a1.0-L flask. (b) 1.0 mol pure HOCl is placed in a 2.

Which of the following is the largest volume? 1.2 x 101 m3 1.2 x 108 cm3 2.0 x 104 dm3 1.2 x 108 mm3

Many substances can go through physical and chemical changes. Which of the following is an example of a physical change?

Which contains more molecules: a mole of hydrogen or a mole of chlorine

How are sex chromosomes different from other chromosomes