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DiKsa [7]
3 years ago
5

I SUCK AT SCIENCE SO HERE

Chemistry
2 answers:
olganol [36]3 years ago
4 0
It is endothermic because light energy is required for the reaction
densk [106]3 years ago
3 0
When I was on the phone with my bio teacher I asked she said endothermic
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In a separate experiment beginning from the same initial conditions, including a temperature Ti of 25.0°C, half the number of mo
NNADVOKAT [17]

Answer:

- 178 ºC

Explanation:

The  ideal gas law   states that :

PV = nRT,

where P is the pressure, V is the volume, n is number of moles , R is the gas constant and T is the absolute temperature.

For the initial conditions :

P₁ V₁ = n₁ R T₁    (1)

and for the final conditions:

P₂V₂= n₂ R T₂    where   n₂ = n₁/2     then    P₂ V₂ = n₁/2 T₂    (2)

Assuming V₂ = V₁ and  dividing (2) by Eqn (1) :

P₂ V₂ = n₁/2 R T₂  / ( n₁ R T₁)      then  P₂ / P₁ = 1/2 T₂ / T₁

4.10 atm / 25.7 atm = 1/2 T₂ / 298 K ⇒ T₂ = 0.16 x 298 x 2 = 95.1 K

T₂ = 95 - 273 = - 178 º C

6 0
3 years ago
Milk is heterogeneous mixture why​
Tanzania [10]

Answer:

Milk is essentially a colloidal dispersion of fat in water. ... However, the fact remains that the fat and water components cannot be mixed together from a solution. There are therefore, two distinct immiscible liquid phase's present, which is why it is a heterogeneous mixture.

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A root is an example of a/an-<br><br> A: tissue <br> B: cell type<br> C:organ<br> D:organism
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Explanation:

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How many joules would be absorbed for the water in Problem 1
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5000 cal X 4.184 J/cal =

Explanation:

20,920 jules

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Multiple Choice Questions 1. Which of the following statement best describes an atom? A. Protons and electrons are grouped toget
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C is Correct

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Protons and Neutrons make up the Nucleus while Electrons surround the nucleus in circular orbits with continuous rotation.

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