ارجو من استاذتي حل الاسئله مع الشرح
8. Calculate the number of moles of h2o formed when 0.200 mole of ba(oh)2 is treated with 0.500 mol of hclo3 according to the chemical reaction shown below.
Ba(oh)2 + 2 hclo3 → ba(clo3)2 + 2 h2o
(a) 0.400 mol
(b) 0.600 mol
(c) 0.500 mol
(d) 1.00 mol
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9. Which of the following has a greater mass:
(a) 2 atoms of potassium (k)
(b) 5.1 x 10-23 mole of helium (he)
(c) 1 mole of magnesium (mg)
(d) all of the elements are equal in masses
حوليها كلها لكتله وراح تعرفي ايش هو الي حيكون اعلى كتله منهم
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10. How many milliliters would you need to prepare 60.0 ml of 0.200 m hno3 from a stock solution of 4.00 m hno3?
(a) 3 ml
(b) 60 ml
(c) 24 ml
(d) 1000 ml
هذا سهل ياعسل من قانون m1v1=m2v2
عوضي وراح يطلع لك الناتج
انا طلع لي 3 لمن حليته
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