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pashok25 [27]
2 years ago
5

In the chemical reaction:

Chemistry
1 answer:
tiny-mole [99]2 years ago
6 0

Answer:

d

Explanation:

d

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If a compound pulley has four
NeTakaya

Answer:

With four rope segments, the ideal mechanical advantage is 4. This means that the compound pulley multiplies the force applied to it by a factor of 4.

Explanation:

8 0
3 years ago
A 10.0 g ice cube is placed into 250 g of water with an initial temperature of 20.0 C. If the water drops to a temperature of 16
Radda [10]

the mass of ice taken = 10 g

the mass of water = 250 g

initial temperature of water = 20 C

the final temperature of water = 16. 8 C

specific heat of water = 4.18 J/g*K

the heat absorbed by ice to melt = heat loss by water

heat loss by water = mass X specific heat of water X change in temperature

heat loss by water = 250 X 4.18 X (20-16.8) = 3344 Joules

heat gained by ice = 3344 J

heat gained by ice = enthalpy of fusion X moles of ice

moles of ice = mass / molar mass = 10 / 18 = 0.56 moles

enthalpy of fusion = 3344 / 0.56 = 5971.43 J / mole

3 0
3 years ago
What is the molar mass of CHC13?
suter [353]

Answer:119.38 g/mol

Explanation:

Add the Molar mass of each element to get the final answer. Use the Periodic table to find the molar mass. Molar mass is located under neath the elements.

7 0
3 years ago
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How many more valence electrons does oxygen need to have a full outer valence shell?
sergejj [24]
Oxygen is in group 16 of the PTOE, so it has 6 valence electrons. In order to have a full outer shell it would need 2 more electrons. (second shell can hold a max of 8 electrons)
3 0
3 years ago
What is the difference between food web and food chain and what do they have in common?
abruzzese [7]

A food web is a system of interlocking and interdependent food chains.


A food chain is a hierarchical series of organisms each dependent on the next as a source of food.


Basically, the difference of the two is that a food web contains multiple different species in the same level that eat the animal below it's status. A food chain is one after the other.

7 0
3 years ago
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