What does the graph show?
the s and p waves travel the same distance through earth's crust in the same amount of time.
the p wave travels through earth's crust more quickly than the s wave travels.
it takes the p wave 18 minutes to travel 6,000 km through earth's crust.
it takes the swave 11 minutes to travel 8,000 km through earth's crust.

The P Wave travels through Earth's crust more quickly than the S wave travels

Explanation:

P and S waves are types of seismic waves that travel through Earth's crust.

Some basic data we can read from this graph are:

- it takes around 13 minutes for P wave to travel 10000 kilometers.

- it takes around 25 minutes for S wave to travel 10000 kilometers.

Based on this data, we can conclude that, since P wave takes less time then S wave to travel the same distance, that means that it moves through Earth's interior more quickly.

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