To prevent accidental poisoning, you should NOT . A.
mix chemicals in well ventilated areas
B.
follow the instructions on the label
C.
keep materials in unlabeled containers
D.
use chemicals in well ventilated areas

the answer is option c

Explanation:

if we keep materials in unlabelled containers we can mix them up and use 2 dangerous acids to make an explosion

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19