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Irina-Kira [14]
3 years ago
12

If a color change occurs when two solutions are mixed has a chemical reaction likely occurred?

Chemistry
1 answer:
goldfiish [28.3K]3 years ago
4 0

Answer: yes

Explanation:

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Help pleaseeeeeeeeeeeeeeeeeee
Nataly [62]

Answer:

1) Constructive Interference

2) Hits a surface and bounces back

3) Antinodes

7 0
3 years ago
Read 2 more answers
For a particular isomer of C 8 H 18 , the combustion reaction produces 5113.3 kJ of heat per mole of C 8 H 18 ( g ) consumed, un
ale4655 [162]

Answer:

ΔH°f(C₈H₁₈(g)) = -210.9 kJ/mol

Explanation:

Let's consider the combustion of C₈H₁₈.

C₈H₁₈(g) + 25/2 O₂(g) ⟶ 8 CO₂(g) + 9 H₂O(g) ΔH°rxn = − 5113.3 kJ

We can calculate the standard enthalpy of formation of C₈H₁₈(g) using the following expression.

ΔH°rxn = 8 mol × ΔH°f(CO₂(g)) + 9 mol × ΔH°f(H₂O(g)) - 1 mol × ΔH°f(C₈H₁₈(g)) - 25/2 mol × ΔH°f(O₂(g))

1 mol × ΔH°f(C₈H₁₈(g)) = 8 mol × ΔH°f(CO₂(g)) + 9 mol × ΔH°f(H₂O(g)) - 25/2 mol × ΔH°f(O₂(g)) - ΔH°rxn

1 mol × ΔH°f(C₈H₁₈(g)) = 8 mol × (-393.5 kJ/mol) + 9 mol × (-241.8 kJ/mol) - 25/2 mol × 0 kJ/mol - (− 5113.3 kJ)

ΔH°f(C₈H₁₈(g)) = -210.9 kJ/mol

5 0
3 years ago
Write a balanced equation for zinc sulfate heptahydrate + sodium carbonate —> zinc carbonate + sodium sulfate
tensa zangetsu [6.8K]

Answer:

I gotta go - but think heat or solubility, what can you drive away with heat and by what is it is not soluble...it is a catch all answer - but rarely is there ONE WAY ONLY! Good luck.

Explanation:

3 0
3 years ago
A child walks 35 meters in 7 seconds. Calculate the child's speed.
Zolol [24]
5 mph hope this helps
8 0
3 years ago
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What is a sentence using composition.<br>​
klemol [59]

Answer:

Son aquellas en las que hay más de un verbo núcleo de predicado, por lo que dos o más oraciones forman una más grande; por ejemplo: A Carlos le gusta el fútbol, pero a María solo le gusta el cricket.

Explanation:

7 0
3 years ago
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