Answer:
1.Physical. People measure water by themselves.
2.Physical. People chop wood.
Explanation:
(this is all I can answer for you. you have to explain it by yourself tho.)
I dont know if I'm correct so you should double check.
Answer:
Superscript 235 subscript 92 upper U plus superscript 1 subscript 0 n right arrow superscript 90 subscript 38 upper S r plus superscript 143 subscript 54 upper X e plus 3 superscript 1 subscript 0 n.
Explanation:
B
Answer:
They are irreversible
Explanation:
This is because it cannot be separated by physical means
Answer: option 2
Explanation: each nitrogen is reduced from zero to -3 and Each H is Oxidised from 0 to +1
Since oxidation no of Nitrogen in molecular N2 is always zero and for H2 also zero.
In NH3, x+3(+1)=0
X+3=0
X=-3
And and hydrogen shows +1 Oxidation no when it is combined with non metal(like N,O,cl) and with -2 with metal like Na,Ca etc.
And zero in molecular form H2.
