<h3><u>Answer;</u></h3>
AlF₃
<h3><u>Explanation;</u></h3>
- A formula unit is the empirical formula of any ionic or covalent compound.
- In this case; the possible formula unit; AlF₃
- Aluminium fluoride is a chemical compound. Its chemical formula is AlF₃.
Answer: 24.6kpa
Explanation:
This is a classic case where Boyle's Law can be applied.
The equation for Boyle's Law is given as: P1V1 = P2V2
Where P1 = initial pressure
P2 = final pressure
V1 = initial volume
V2 = final volume
From the question, P1 = ?, P2 = 98.2kpa , V1 =4L , V2 =1L
P1V1 = P2V2
P1 x 4L = 98.2 kpa x 1L
Make P1 subject of formula we then have:
P1 = 98.2kpa X 1L / 4L
= 24.6kpa
Complete question is;
Identify the type of reaction in the chemical reaction below:
2P205 ➡️ 4P + 502
single replacement
synthesis
decomposition
combustion
double replacement
Answer:
Decomposition
Explanation:
We. An see in the question that the compound 2P205 is broken down into simpler substances which are phosphorus (P) and oxygen (O).
Now, this is a decomposition reaction because a decomposition reaction is one in which a compound is broken down into simpler substances
Answer:
This question is incomplete. The completed question is below
Procedure
1. Read and complete a lab safety form.
2. Place about 50 copper pellets into a plastic petri dish. Place the cover on the dish, and secure it with tape.
3. Hold the dish by the edges. Gently vibrate the dish from side to side no more than 1–2 mm. Observe the pellets. Record your observations in your Science Journal.
4. Repeat step 3, vibrating the dish less than 1 cm from side to side.
5. Repeat step 3, vibrating the dish 3–4 cm from side to side.
if the pellets represent particles in matter, what do you think the shaking represents?
Explanation:
This procedure seeks to illustrate the "properties" of particles in matter. The shaking of the pellets represents the movement of the particles of matter (which occurs in liquids and gases). This is because the movement of particles in a liquid and gaseous state freely moves around (reason the petri-dish was vibrated so the pellet particles which serve as the liquid/gaseous particles can move freely).
NOTE: The particles in a solid have a highly restricted movement (or no movement) because of the compact nature of the particles within the solid.
Answer:
kinetic energy
Explanation:
all moving objects have kinetic energy. when an object is an motion it changes its position by moving in a direction: up,down, forward, or backward
