Physical change because you didn't change the chemical compound
Answer:
omeone tell me something
Shut up and take my money
I've got pockets full of gold
No, I don't owe nothing
Stop acting funny
I've seen greedy people hungry
Up in swarms, I've seen them running
Coming for more
Explanation:
Answer:
Br
|
Br-P-Br
|
Br
Explanation:
To calculate the valance electrons, look at the periodic table to find the valance electrons for each atom and add them together. P is in column 5A, so it has 5, Br is in column 7A, so it has 7 (multiply by 4 since there are 4 Br atoms to give 28) and there is a 1- charge, so add one more electron. 5+28+1=34, so there are 34 electrons to place. P would be the central atom, so place it in the middle. Place each Br around the P (as shown above) with a a single line connecting it. Each line represents 2 electrons, so 8 total have been place, leaving 26 remaining. Place 6 electrons around each Br (2 on each of the unbonded sides), which leaves 2 electrons remaining. The remaining pair of unbound electrons will be attached to the P between any two Br atoms. Phosphorus doesn't have to follow the octet rule, so it actually ends up with 10 valance electrons.
<u>Answer</u>:
balanced equation: CH₄ + 2O₂ → CO₂ + 2H₂O
<u>Explanation</u>:
Given sample: CH₄ + O₂ → CO₂ + H₂O
- The carbon is same, so no need to change.
- Hydrogen 2 less on left side so putted "2" before H₂O = "2H₂O"
- so now, there is total 4 oxygen on left side to balance put 2 before right side oxygen like this "2O₂"
changes applied: CH₄ + <u>2</u>O₂ → CO₂ + <u>2</u>H₂O
