Formulas are like steps to solve an equation but in cemistry a formula is 2 or more elements combined to make something
Answer :
Explanation : When diatomic hydrogen gas and diatomic nitrogen gas reacts spontaneously it forms ammonia gas as the product.
we will have the following reactions; As all the reactants and products are in the gaseous state the subscript (g) is given to the molecules.
But this is not a balanced equation, as on the right side of reactants we have 2 hydrogen atoms and 2 nitrogen atoms which gives the product which has one nitrogen and three hydrogen in the compound state.
So, balancing the equation, we get,
We multiplied 2 with the diatomic hydrogen molecule which resulted in production of 2 moles of ammonia as the product.
So, the complete balanced equation is;
It is B. More slowly than a Gas.
Answer:
2.6166 moles
Explanation:
stp means: T=273k p=101.3kpa
R= 8.31(constant) v=58.6
using the ideal gas law; pv=nRt
101.3 x 58.6 = n x 8.31 x 273
n= (101.3 x 58.6)\(8.31 x 273)
n= 2.6166moles
Volume Ca(OH)2 = mL ?
Molarity = 0.35 M
Volume HI = 278.3 mL / 1000 => 0.2783 L
Molarity HI = 0.32 M
number of moles HI :
n = M x V
n = 0.32 x 0.2783
n = 0.089056 moles of HI
mole ratio :
<span>Ca(OH)2 + 2 HI = CaI2 + 2 H2O
</span>
1 mole Ca(OH)2 ------------- 2 moles HI
moles Ca(OH)2 -------------- 0.089056 moles of HI
moles Ca(OH)2 = 0.089056 x 1 / 2
moles Ca(OH)2 = 0.089056 / 2
= 0.044528 moles of Ca(OH)2
Volume of Ca(OH)2 :
M = n / V
0.35 = <span>0.044528 / V
V = 0.044528 / 0.35
V = 0.127 L in mL :
0.127 x 1000 = 127 mL
hope this helps!</span>