Sắp xếp các hợp chất: HF, HI, HBr, HCl theo chiều giảm dần tính axit. A. HF > HCl > HBr > HI. B. HF > HBr > HI > HCl.
C. HF > HBr > HCl > HI. D. HI > HBr > HCl > HF

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )