Two atoms that have the same number of protons must be the same_________.
2 answers:
Hey I think it’s element but I’m not sure
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After 1 half life, 1/2
After 2 half lives, 1/4
After 3 half lives, 1/8
Answer:
please give the answer choice.
Answer:
The volume of STP will be 0.03 plss mark me brainliest
Answer:
A Sink
Explanation:
Anything greater than 1g/cm3 will sink in water
NaOH
Na=23
O=16
H=1
SO,NaOH=23+16+1
NaOH=40g/mol
42% of 40=42/100x40
oxygen is the compound
density=mass/volume
1.30=mass/6
mass=7.8g
