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Anna71 [15]
3 years ago
10

Maria and Carla were hiking when Maria tripped, fell, and sprained her ankle. Carla took out the first-aid kit and unwrapped a c

old pack. Carla popped a vial that was inside the cold pack. The two chemicals inside the pack mixed together and the pack began to get icy cold. Carla applied the pack to Maria's ankle. What kind of reaction occurred in the cold pack? What evidence supports your answer? HELP
Chemistry
2 answers:
statuscvo [17]3 years ago
5 0
It is an endothermic reaction, the chemicals (probably water and ammonium nitrate) require more energy to react therefore it absorbs heat from it's surrounding to power the reaction and thus lowering the surrounding temperature. <span />
mash [69]3 years ago
4 0

Answer:

It is a chemical change because heat energy is absorbed and the pack gets colder

Explanation:

I G0T IT RIGHT 0N USATEST PREP

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A turtle moves at a speed of 1.0km/h. How fast is the turtle moving in meter per second
e-lub [12.9K]

Answer:

The speed of the turtle is 9.41 centimeters per second.

Explanation:

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Explanation:

5 0
3 years ago
Please help!! I don’t think I did this right.?
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Answer:

It was done correctly, Your answer is completely correct.

Explanation:

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3 years ago
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Different kinds of wood have different densities. The density of american white oak wood is generally 0.77 g/cm3. If Jim grabs a
mixas84 [53]

Answer:

m= 29.645 g

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

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V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

density of wood = 0.77 g/cm³

volume= 38.5 cm³

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Solution:

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7 0
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Which of the following is true concerning ψ²? A) ψ² describes the probability of finding an electron in space. B) ψ² describes t
Ilia_Sergeevich [38]

Answer:

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3 years ago
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3 years ago
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