I’m pretty sure it would be B
57.0 is it rounded to three sig figs. You count three spaces then round from there, which would be the zero and you would round down because the four is there.
The test for this is fairly simple.
We take a glowing match or splint near the gas sample, if the glow intensifies, oxygen is present.
If a lit splint or match goes out with a popping sound, this means that hydrogen is present.
M/V=D
65.14/35.4≈1.84
The density of the sulfuric acid would be about 1.84g/mL
Answer:
Dry ice undergoes sublimation, an endothermic change at room temperature.
