Who wants to here my life story, but to get the points you half to actually read it, and this actually happened to me and my sister jaidenstreck. So I was in foster care for 5 years of my life, then I was adopted, then my grandmother died, then my aunt died, and then my parents got divorced, and then here I am still going through the divorce with my mom and my sis jaidenstreck, though I have another sister with, R. A.D, look it up it’s real, and she’s literally broke my family into a million pieces, so she’s with my dad and I really hate her and him, then the corona virus, ag it’s been a long long long long year, and my question is why this happened to me?

2020 is the answer

Explanation:

i read it

but idk everything happens for a reason

Explanation:

c. 75.7

i think that is the right

when 25.0 ml of 0.700 mol/l naoh was mixed in a calorimeter with 25.0 ml of 0.700 mol/l hcl, both initially at 20.0 °c, the temperature increased to 22.1 °c. the heat capacity of the calorimeter is 279 j/°c.

the equation for the reaction is:

naoh + hcl → nacl + h₂o

moles of hcl = 0.0250 l hcl ×

0.700

mol hcl

1 l hcl = 0.0175 mol hcl

volume of solution = (25.0 + 25.0) ml = 50.0 ml

mass of solution = 50.0 ml soln ×

1.00

ml soln

= 50.0 g soln

δt=t2-t1

= (22.1 – 20.0) °c = 2.1 °c

the heats involved are

heat from neutralization + heat to warm solution + heat to warm calorimeter = 0

q1+q2+q3=0

nδh+mcδt+cδt=0

0.0175 mol ×

δh

+ 50.0 g × 4.184 j·g⁻¹°c⁻¹ × 2.1 °c + 279 j°c⁻¹ × 2.1 °c = 0

0.0175 mol ×

δh

+ 439.32 j + 585.9 j = 0

0.0175 mol ×

δh

= -1025.22 j

δh=1025.22j0.0175 mol= -58 600 j/mol = -58.6 kj/mol