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Kipish [7]
3 years ago
14

“It is important we work together on this project; we want our group to succeed.” This statement reflects __________.

Chemistry
1 answer:
Nady [450]3 years ago
5 0

Answer: Option (d) is the correct answer.

Explanation:

When people or group of people work collectively or work together in order to achieve a certain aim then it is known as collectivism.

In collectivization, people help each other.

Thus, we can conclude that it is important we work together on this project; we want our group to succeed.” This statement reflects collectivization.

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How much energy (in Joules) is required to convert 129 grams of ice at −23.0 °C to liquid water at 18.0 °C?
Karo-lina-s [1.5K]

Answer:

The energy that is required for the process is:

6230.7 J + 42957 J + 9715.2 J = <u>58902.9 joules</u>

Explanation:

This is a calorimetry problem:

Q = m . C . ΔT

Q = heat; m = mas; C is the specific heat and

ΔT = Final T° - Initial T°

Q = C lat . m

Q = Heat

m = mass

C lar = Latent heat of fusion

First of all we calculate the heat for ice, before it takes the melting point. (from -23°C  to 0°C)

Q = 129 g . 2.10 J/g°C . (0°C - (-23°C)

Q = 129 g . 2.10 J/g°C . 23°C → 6230.7 joules

Then, the ice has melted. To be melted and change the state it required:

Q = C lat . m

Q = 333 J/°C . 129 g → 42957 joules

And in the end, we have water that changed its T° from O°C to 18°C

Q = 129 g . 4.184 J/g °C . (18°C - 0°C)

Q = 9715.2 Joules

The energy that is required for the process is:

6230.7 J + 42957 J + 9715.2 J = 58902.9 joules

5 0
3 years ago
Name two control substance?
guapka [62]
The two control bases would be water and salt.
6 0
3 years ago
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Convert 125 kPa to atm<br><br>A. 12,700 atm<br><br>B. 0.164 atm<br><br>C. 1.23 atm​
JulijaS [17]

Answer:

c sounds like the most reasonable answer rember to always divide the pressure value by 101

6 0
3 years ago
What happens to the kinetic energy of a ball if its velocity is increased to twice its original value?
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Answer:

idk

Explanation:

4 0
3 years ago
Calculate the amount, in moles, of 2.5 L of a 5.0 M sulfuric acid, H2SO4.
cricket20 [7]

Answer:

12.5 moles H2SO4

Explanation:

Calculate the amount, in moles, of 2.5 L of a 5.0 M sulfuric acid, H2SO4.

5.0 M means 5 moles per liter.

so in 2.5 L we have

5.0 X 2.25 = 12.5 moles H2SO4

4 0
3 years ago
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