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Llana [10]
3 years ago
13

A bathtub is half full of warm water. How could the

Chemistry
2 answers:
Montano1993 [528]3 years ago
8 0

Answer: It is A,B. and C.= Add hot water to the tub.

Heat the water in the tub without adding more water.

Add more water at the same temperature to the tub.

Explanation: I got it correct.

WITCHER [35]3 years ago
6 0

Answer: A. B and C

Explanation:

I'm pretty sure this is right....

Have a great day :)

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klemol [59]

Answer:

flourine

Explanation:

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1 year ago
How to figure out if a reaction is exothermic or endothermic?
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Exothermic is when energy is released
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A 100g of sample of a compound is combusted in excess oxygen and the products are 2.492g of CO2 and 0.6495 of H2O. Determine the
ruslelena [56]

The empirical formula : C₁₁O₁₄O₃

<h3>Further explanation</h3>

The assumption of the compound consists of C, H, and O

mass of C in CO₂ =

\tt \dfrac{12}{44}\times 2.492=0.680~g

mass of H in H₂O =

\tt \dfrac{2.1}{18}\times 0.6495=0.072~g

mass of O :

mass sample-(mass C + mass H)

\tt 1-(0.68+0.072)=0.248`g

mol of  C :

\tt \dfrac{0.68}{12}=0.056

mol of H :

\tt \dfrac{0.072}{1}=0.072

mol of O :

\tt \dfrac{0.248}{16}=0.0155

divide by 0.0155(the lowest ratio)

C : H : O ⇒

\tt \dfrac{0.056}{0.0155}\div \dfrac{0.072}{0.0155}\div \dfrac{0.0155}{0.0155}=3.6\div 4.6\div  1\\\\\dfrac{11}{3}\div \dfrac{14}{3}\div \dfrac{3}{3}=11:14:3

3 0
3 years ago
This sphere contains all of the frozen water on Earth
ozzi
I believe the correct answer is the geoshpere. I hope this was helpful.
8 0
4 years ago
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The burning of gasoline in an automobile engine is an example of a(n) _____.
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It is an exothermic reaction because the heat is released.
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