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what mole h2 produced when .25g of z reacts with 10ml of hcl

Given that cos A = 5/13 and A and B are both acute angles, calculate the value of Sin2A and Cos2A

Establish the following identity: CosA/1-TanA + SinA/1-CotA = CosA-SinA

The fifth term of an exponential sequence (g.p)is greater than the first term by 13 and the half and the first term is greater than the third term by 9.find the common ratio and the first term

if a class has pupils numbering 200,what is the percentage of the boys,if the the girls are 35% in number

yoruba believe is about obatala was first sent by eledumare ,he got drunk by palm wine ,oduduwa was sent to created the earth

sent forth speech

pls do it for me