Hoà tan x gam NaCl vào 180g nước thu được dung dịch NaCl 10%. a) Tính khối lượng của NaCl đã pha.
b) Tính khối lượng dung dịch NaCl sau khi pha.

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

Your awser would be a acetone

The answer is neonhope it

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source: