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Lemur [1.5K]
3 years ago
7

A Venn diagram is used to compare and contrast different topics. The items that are unique to each topic are represented in the

separate sections of the circles, and the items that are common to both topics are represented in the center overlapping sections. Harlow creates this Venn diagram comparing and contrasting endothermic and exothermic processes. What can be added to the Examples section of each circle? A) Endothermic: ice melting into water, and a heat pack becoming warm
Exothermic: a glow stick glowing, and fireworks exploding
B) Endothermic: ice melting into water, and an instant ice pack turning cold
Exothermic: fireworks exploding, and gasoline burning
C) Endothermic: a glow stick glowing, and a heat pack becoming warm
Exothermic: an instant ice pack turning cold, and ice melting into water
D) Endothermic: gasoline burning, and an instant ice pack turning cold
Exothermic: ice melting into water, and an instant ice pack turning cold
Chemistry
2 answers:
emmainna [20.7K]3 years ago
5 0

The answer is,

<u>B. Endothermic: ice melting into water, and an instant ice pack turning cold Exothermic: fireworks exploding, and gasoline burning</u>

Please rate <u>Brainliest</u>  (:


CaHeK987 [17]3 years ago
4 0
<span>An exothermic reaction is one in which there is the production of heat whereas an endothermic reaction is one in which heat is absorbed. For the choices above, the answer would be letter B. Ice melting in water and an ice pack turning cold absorbs heat which is why it is an endothermic reaction. Exploding fireworks and gasoline burning gives off heat which is why it is an exothermic reaction.</span>
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What mass of lead (II) chloride is produced when 200.0 mL of a 0.250 M solution of sodium chloride is mixed with 200.0 mL of a 0
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Answer:

Option d. 6.95 g

Explanation:

First of all, we state the reaction:

2NaCl + Pb(NO₃)₂ → PbCl₂ +  2NaNO₃

We determine the moles of each reactant, to state the limiting

Firstly we convert volume frm mL to L

0.200 L . 0.250M = 0.05 moles of NaCl

0.200L . 0.250M = 0.05 moles of Pb(NO₃)₂

Acording to stoichiometry we know that relation is 1:2, so the limiting reagent is the NaCl.

For 1 mol of Pb(NO₃)₂ I need 2 moles of NaCl

For 0.05 moles of Pb(NO₃)₂ I would need, the double → 0.1 moles

(We only have, 0.05 moles of NaCl)

Stoichiometry to the formed product is 2:1

From 2 moles of NaCl I produce 1 mol of PbCl₂

From 0.05 moles I would produce, the half → 0.025 moles

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8 0
3 years ago
What is the answer to y=1/2-x+1​
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Answer:

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4 0
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iVinArrow [24]

Answer:

its c and A

Explanation:

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