Answer:
Calculating Atomic Mass
Change each percent abundance into decimal form by dividing by 100. Multiply this value by the atomic mass of that isotope. Add together for each isotope to get the average atomic mass.
Explanation:
have a nice day
Answer:
A. The relationship between the Sun,Moon,and Earth
Explanation:
Scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large. 3 000 000 000 000 000 000 000 000 000 000 000 000 000 tons, ... This makes it convenient to represent very large or very small numbers using exponential notation.
Answer:
9.18g
Explanation:
Step 1: Write the reduction half-reaction
Au³⁺(aq) + 3 e⁻ ⇒ Au(s)
Step 2: Calculate the mass of gold is produced when 15.0A of current are passed through a gold solution for 15.0min
We will use the following relationships:
- 1 mole of electrons has a charge of 96486 C (Faraday's constant).
- 1 mole of Au is produced when 3 moles of electrons circulate.
- The molar mass of Au is 196.97 g/mol.
The mass of gold produced is: