Std 8 gujarati ch 8 aj annd / standard 8 gujarati ch 8 swadhyay / dhoran 8 gujarati path 8

The enthalpy change of the reaction C_3H_8(g)+H_2(g) rarr C_2H_6(g)+CH_4(g) , at 25^@ , will be Given that: heat of combustion values under standard condition (The standard heat of formation of C_3H_8(g) is -103.8kJ/mol)

Find the variance and standard deviation of the random variable X whose probability distribution is given below : {:(x,0,1,2,3),(P(X=x),1/8,3/8,3/8,1/8):}

If +8 means 8 units forward, then -8 means 8 units

8 + (-8) = ?

Represent 0/8a n d8/8 on a number line.

Given that standard heat enthalpy of CH_(4), C_(2)H_(4) and C_(3)H_(8) are -17.9, 12.5, -24.8 Kcal/mol. The Delta H for CH_(4)+C_(2)Hrarr C_(3)H_(8) is :

Evaluate : 9/8 times 8/7 ÷ 8/7 + 4/8 + 9/8 times 8/7 times 7/8 + 4/8

Let A = {7, 8, 9, 10} and R = {(8, 8), (9, 9), (10, 10), (7, 8)} be a relation on A, then R is

8 cot^2A-8 cosec^2A is equal to a) 8 b) 1/8 c) -8 d) - 1/8

What is the common difference of an A.P. 8 1/8, 8 2/8, 8 3/8 ,………..