Explanation:
metallic conduction:the movement of electrons through a metal, with no changes in the metal and no movement of the metal atoms.
I hope this help uuhh............
Answer:
105
Explanation:
Density = mass/volume
therefore volume = mass/density
826/7.9=105 (To three significant figure)
Answer:
This isotope has 59 electrons giving it a charge of -2.
Explanation:
To find this we have to understand isotope relates to the mass of the nucleus. This isotope has 59 electrons to counter the protons and give it a negative charge.
Answer:
(1) See below, (2) About 8.4 pH, (3) About 3.981 * 10⁻⁶ mol dm⁻³
Explanation:
1. A buffer is a solution that resist pH when adding a basic or acidic compound. It's purpose is to neutralize added acids and bases.
2. Remember that the formula for pH is -log [H+]. We have a 0.1 M solution of baking soda in water with [H+] of about 4.0 × 10⁻⁹. Therefore we can calculate the pH as follows...
pH = -log (4.0 × 10⁻⁹)
pH = -(-8.39794...) = (About) 8.4 pH of 0.1 M of baking soda
3. This question has a similar set up...
pH = -log [H+]
[H+] = inverse of log^- pH
[H+] = 10^-5.4 = (About) 3.981
10⁻⁶
Answer:
<u>Question</u><u> </u><u>1</u><u> </u><u>:</u>
• A compound is ionic if it is made up of a metal or a cation (+) and a non metal or anion (-)
<u>Question</u><u> </u><u>2</u><u> </u><u>:</u>
• While naming ionic compounds, follow the formula → "metal" + "non-metal ending with <em>ide</em><em> </em>"
• i.e; Sodium Chloride:

<u>Question</u><u> </u><u>3</u><u> </u><u>:</u>
• The answer above that question is perfect.
<u>Question</u><u> </u><u>4</u><u> </u><u>:</u>
1 atom → Mono. But it is highly recommended to ignore it
2 atoms → DI
3 atoms → TRI
4 atoms → TETRA
5 atoms → PENTA ( such as pentaoxide )
7 atoms → HEPTA ( such as heptaoxide )
<u>Question</u><u> </u><u>5</u><u> </u><u>and</u><u> </u><u>6</u><u>:</u>
Are perfectly answered.