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timofeeve [1]
4 years ago
12

Please help me on this question (4a)

Chemistry
1 answer:
drek231 [11]4 years ago
5 0
You have to draw the arrow going out of the coffee cup and into the environment. Since the coffee is hot, heat will ecscape in order for it to reach room temperature
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PLEASE HELP ASAP!
Airida [17]

Answer:

Direct relationship

Explanation:

I took the test. Good luck!

7 0
3 years ago
Read 2 more answers
Convert 35 joules into calories.<br> OR 1.410 cal<br> OC 82,500 cal<br> OD. 1.420,000 cal
lesya692 [45]

Answer:

0.83Cal

Explanation:

Given parameters:

   Amount of energy given;

      35J;

 Convert to Cal;

         1 calorie  = 42 joules

         x calories  = 35 joules

   Cross multiply;

         42x = 35

             x = \frac{35}{42}   = 0.83Cal

7 0
3 years ago
The density of silver is 10.49 g/mL. If a sample of pure silver has a volume of 12.993 mL, what is the mass of the silver?
r-ruslan [8.4K]

Answer:

see the pic for more detail

4 0
3 years ago
IM ON A TIME LIMIT ANSWER FAST ILL GIVE 20 POINTS AND A BRAINEST ANSWERHow will a short-term environmental change most likely af
gtnhenbr [62]

Answer:

first and 4th

Explanation:

4 0
3 years ago
Explain how using dimensional analysis could have prevented this crash
emmainna [20.7K]
Dimensional analysis is a convenient technique to determine if the solution you're following would lead you to the answer that you're looking for. It is the manipulation of units. Like units are cancelled whenever they appear on the numerator and the denominator side. For example, if the speed is 5 m/s and the time is 2 s, the distance would be:

(m/s)*(s) = m

So, you would know that the solution would be 5*2 because it yields the unit for distance. 

Hence, dimensional analysis could prevent crash by calculating the right velocities or distances of the two vessels to prevent collision.
4 0
4 years ago
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