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Keith_Richards [23]
3 years ago
11

Your favorite beach has 42 large sand dunes throughout the course of the year wind erosion destroys eight sand dunes and create

new ones how many sand dunes would there be the end of the year
Chemistry
1 answer:
a_sh-v [17]3 years ago
8 0
42- 8 = 34 sand dunes must be the answer

hope so it helps
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vekshin1

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Explanation:

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I need help on a CER
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4 years ago
A 100.0 g sample of aluminum released 1680 calories when cooled from 100.0c to 20.0 c what is the specific heat of the metal
vovangra [49]

Answer:

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Explanation:

Step 1 : Write formule of specific heat

Q=mcΔT

with Q = heat transfer (J)

with m = mass of the substance

with c = specific heat ⇒ depends on material and phase ( J/g °C)

with ΔT = Change in temperature

For this case :

Q = 1680 Calories = 7033.824 J ( 1 calorie = 4.1868 J)

m = 100.0g

c= has to be determined

ΔT = 100 - 20 = 80°C

<u>Step 2:  Calculating specific heat</u>

⇒ via the formule Q=mcΔT

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7033.824 = 8000 *c

c = 7033.824 /8000

c = 0,879228 J/g °C

or 0.21 Cal / g°C

The specific heat of aluminium is 0.8792 J/g °C  or 0.21 Cal/g °C

6 0
3 years ago
list three sources of error that could account for the differences between your values for the enthalpy of fusion of water and t
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3 years ago
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Answer: sp2

Explanation:

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