2.1 billion years
2,139,000,000 to be exact
Argon has 24 known isotopes.
True, if you would like an example look at Indian arrow heads or early architecture all use rocks.
Explanation:
it should be option number (D) Iron (III) oxide
Answer:
17.5 g
Explanation:
Given data
- Mass of solution to be prepared: 50.0 grams
- Concentration of the salt solution: 35.0%
The concentration by mass of NaCl in the solution is 35.0%, that is, there are 35.0 grams of sodium chloride per 100 grams of solution. We will use this ratio to find the mass of sodium chloride required to prepare 50.0 grams of a 35.0% salt solution.
