Sand at a beach becomes very warm after being exposed to sunlight for many hours due to what type of heat transfer?

Chemistry

2 answers:

erastova [34]2 years ago

7 0

Answer:

Explanation:

When lie down on hot sand, the energy flows from the sand to your body by conduction. Conduction is the transfer of heat between two things that touch each other.

andreev551 [17]2 years ago

3 0

Answer:

Explanation:

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The reactant concentration in a second-order reaction was 0.560 m after 115 s and 3.30×10−2 m after 735 s . what is the rate con

Aloiza [94]

Use the formula for second order reaction:

$\frac{1}{C} = \frac{1}{C_0} + kt$

C = concentration at time t
C0 = initial conc.
k = rate constant
t = time

1st equation : $\frac{1}{0.56} = \frac{1}{C_0} + 115k$

2nd Equation: $\frac{1}{0.033} = \frac{1}{C_0} + 735k$

Find $\frac{1}{C_0}$ from 1st equation and put it in 2nd equation:

$\frac{1}{0.033} = \frac{1}{0.56} - 115k + 735k$

$\frac{1}{0.033} - \frac{1}{0.56} = 620k$

k = 0.046

3 0

3 years ago

Please help me! Thank you! Love!

labwork [276]

Option E, 2, 7, 4, 6. The type of reaction is combustion reaction, as oxygen is being reacted with C2H6 to form new compounds.

Let me know if you need any further explanation :))
-T.B.