Determine the number of grams H2formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 × 1023atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) →H2(g) + FeCl2(aq)

"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"

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

може ли да зареждате повече информация, моля

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest