خلووونــــــــــــــا نجمع الـ 30 سؤال عن الكيمياء

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ياريت الي يجااوب يكون متاكد .....


the element in group 3a and period 3
a_ ga
b_sc
c_al
d_b



the systmatic name of Ag2Co3 is

a-silver(I) carbonate
b-silver(II) carbonate
c-silver carbonate




what the theoretical yield chromim (cr) that can by the reaction of 40,0 g

of cr2o3 with 8.00 of aluminum (Al) to the chemical reaction

2AL+CR2O3====> AL2 + 2cr

a_ 15.4
b_17.33
c_19.4
d_13.48



how many moles of SO3 are produced by eeaction of 10 g oxygen according to the reaction

2SO +Cr2O3 =====>Al2O3 + 2cr

a_1.0625
b_0.875
c_0.625
d_0.75



what is the mass of carbon in 10 g carbon dioxide co2

a_4.1
b_2.73
c_6.82
d_5.45




اتمنى الاجاااابه ....... ^^