Given 1.00 grams of each of the following radioisotopes, Ca-37, U-238, P-32 and Rn-222, which would have the least remaining original isotopes after 100 years?

1) Ca-37

2) U-238

3) P-32

4) Rn-222

What was sodium used for in the past?

How much heat, in joules, is required to raise the temperature of 1.82 kg of water by 3.32°C?

What are the differences between mechanical & chemical weathering?

For a reaction where h is negative and s is negative, the reaction will be

Based on its location on the periodic table, which metal is likely to be less reactive than both strontium and sodium?

The two forms of oxygen, O2 (g) and O3 (g), have (1) different molecular structures and identical properties (2) different molecular structures and different properties (3) identical molecular structures and identical properties (4) identical

What is the difference between a distraction and a reaction

if carbon which has an electrongavity of 2.5 bonds with hydrogen, which has an electrongavity of 2.1, the bond between the two atoms will be classified as a (n) covalent bond

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A. 12 atoms of carbon (C) B. 6 atoms of carbon (C) C. 3 atoms of carbon (C) D. 2 atoms of carbon (C)

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.