Which has the greatest half life, carbon-14, potassium-40, or uranium-238

What about electrons allow them to be some of the fastest traveling sub atomic particle?

Which of the following is an example of an endothermic process? condensation evaporation burning freezing

Is 0.49 smaller than 0.72

A decrease in height of a column in a mercury barometer means that

Using the periodic table, explain the difference between hydrogen, deuterium, and tritium - i. e. hydrogen-1, hydrogen-2, and hydrogen-3. A) Allotropes vary in their number of protons - so they contain 1, 2, and 3 protons, respectively.

Which of the following is an example of an electric force that occurs in atoms

5. What is another name for Newton's first law in your own words.

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 1023 atoms in 1 mol. How many atoms are present in 48.60 g of Mg? 3.32 10^-24 atoms 1.96 10^-21 atoms 1.20 10^24 atoms 7.11 10^26 atoms

Add 3.76 * 104 and 5.5 * 102 and write the answer in scientific notation. A. 9.26 * 104 B. 9.26 * 106 C. 3.82 * 106 D. 3.82 * 104

In a dynamic equilibrium between the liquid state and the gas state, what is true about the rate of evaporation? a. greater than rate of condensation b. less than rate of condensation c. equal to rate of condensation d. cannot be determined.