Answer:
Biodiversity is the existence of many different types of of organisms living together (coexisting). This can be many species, types of organisms, or sizes of organisms living in the same environment.
Explanation:
You can either use an ice table or the Henderson-Hasselbalch equation. I would use the Henderson-Hasselbalch equation since that is the easiest method to use in my opinion. The Henderson-Hasselbalch equation is pH=pKa+log([A⁻]/[HA]).
pKa=-log(Ka) (which equals 1.77 in this question)
[A⁻]=concentration of conjugate base (0.386M in this question)
[HA]=concentration of acid (0.451M in this question)
When you plug everything in you should get a pH of 1.697.
I hope this helps. Let me know if anything is unclear or you want me to explain anything in more detail.
Answer:
Explanation:
First, let's look at the Periodic Table.
We see that aluminum is a metal, while oxygen is a non-metal.
Now, let's recall three types of bonds
- Ionic: typically forms between a metal and a non-metal
- Covalent: usually forms between non-metals
- Metallic: tends to form with metals
Since we have a metal (Al) and a non-metal (O), aluminum oxide must have an <u>ionic bond.</u>
Answer:
The Sun releases energy by fusing four hydrogen nuclei into one helium nucleus.
Explanation:
nuclear energy
Answer:
0.295 g Co
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
- Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Explanation:
<u>Step 1: Define</u>
3.01 × 10²¹ atoms Co
<u>Step 2: Identify Conversions</u>
Avogadro's Number
Molar Mass of Co - 58.93 g/mol
<u>Step 3: Convert</u>
<u /> = 0.294552 g Co
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
0.294552 g Co ≈ 0.295 g Co