Question

1+2+3-4-5-6+7+8+9-10-11-12+13+.....-2020​

Answer 1

Answer:

..??......

What would be the pH of 0.5M solution of sodium nitrite in water ? (\rm K_{a}K

a

of \rm HNO_2= 7×10^{-4}HNO

2

=7×10

−4

) ( Assume 1-\alphaα = 1 )

Answer 2

Answer:

Let's simplify step-by-step.

1+2+3−4−5−6+7+8+9−10−11−12+13+x−2020

=1+2+3+−4+−5+−6+7+8+9+−10+−11+−12+13+x+−2020

Combine Like Terms:

=1+2+3+−4+−5+−6+7+8+9+−10+−11+−12+13+x+−2020

=(x)+(1+2+3+−4+−5+−6+7+8+9+−10+−11+−12+13+−2020)

=x+−2025

Answer:

=x−2025

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