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Over [174]
3 years ago
14

A hot lump of 35.8 g of copper at an initial temperature of 70.7 °C is placed in 50.0 mL H2O initially at 25.0 °C and allowed to

reach thermal equilibrium. What is the final temperature of the copper and water, given that the specific heat of copper is 0.385 J/(g·°C)? Assume no heat is lost to surroundings.

Physics
1 answer:
AURORKA [14]3 years ago
4 0

I upload the answer via Image because Brainly warned me that there were inappropriate links or words.

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Dr. Potter provides vaccinations against polio and measles.
vaieri [72.5K]

Answer:

hi zzayn i will solve this later

Explanation:

Let's establish that x= number of polio vaccinations and y=number of measles vaccinations.

Since Dr. P gave a total of 60 VACCINATIONS, we know that x+y=60. (This is equation #1)

We also know that Dr. P gave a total of 184 DOSES of the vaccinations and that the polio vaccine has 4 doses, while the measles vaccine has 2 doses. This means that our second equation is 4x+2y=184. (This is equation #2)

You can get either variable (x or y) by itself from equation #1. I always choose x.

x+y=60

-y.     -y

x=60-y

Now we can plug our x value into equation #2.

4x+2y=184

4(60-y)+2y=184

240-4y+2y=184

240-2y=184

-240    -240

-2y=-56

/-2 /-2

y=28 measles vaccines

So we know that Dr. P administered 28 measles vaccines. We need to plug our y value back into equation #1 (or, to make it easier, our switched around equation) to find the number of polio vaccines.

x=60-y

x=60-28

x=32 polio vaccines

3 0
3 years ago
Read 2 more answers
What is the average speed of a car that traveled 300 meters in 5.5 seconds?
allochka39001 [22]

Answer: 54.55 m/s

Explanation:

Distance = 300 m

Time = 5.5 s

Average Speed = Total Distance/Total Time

= 300/5.5

= <u>54.55 m/s</u>

Hope this helped..

4 0
2 years ago
A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following c
garik1379 [7]

Answer:

i think its B

Explanation:

i found the answer on another website hope its the right answer :)

6 0
2 years ago
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The greater the mass is in an object, the higher resistance to a change in movement the object will have.
Bond [772]
True. Since Inertia states this law, we are bound to believe greater mass = greater resistance in change of motion
3 0
3 years ago
Read 2 more answers
Temperature Dependence of the pH of pure Water
Mamont248 [21]

Answer:

At 100°C, the pH of pure water is 6.14. That is the neutral point on the pH scale at this higher temperature. A solution with a pH of 7 at this temperature is slightly alkaline because its pH is a bit higher than the neutral value of 6.14.

Explanation:

nonde

8 0
3 years ago
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