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3 years ago

If you have a balloon inside a car at noon during a hot summer day, the balloon molecules

Chemistry

2 answers:

aleksandrvk [35]3 years ago

6 0

Answer:

it decreases

Explanation:

because its false

earnstyle [38]3 years ago

3 0

Answer:

True

Explanation:

The pressure will increase because the heat will make the molecules move around and spread out more.

If you want I could go into more detail with the explanation.

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Which of the following is a change of state?

Step2247 [10]

Answer:

I think C. Hope this Helps!

Explanation:

5 0

3 years ago

Question 2.3

SVETLANKA909090 [29]

Answer:

Your answer is :- C [OH-] = 10 x 10-7 mol dm-3

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5 0

3 years ago

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A positively charged substance is brought near the ion. What will most likely happen and why

d1i1m1o1n [39]

<u>Answer:</u> It repels positive ion and attracts negative ion.

<u>Explanation:</u>

There are 2 types of ions:

1. Cations: These ions are positively charged ions which are formed when a substance looses electrons.

2. Anions: These ions are negatively charged ions which are formed when a substance gains electrons.

It is known that, like charges repel each other and unlike charges attract each other.

As, it is given that the substance is positively charged, so it will attract anion and repel cation.

4 0

3 years ago

You are trying to make balloon sculptures. You twist the balloons gently, but they keep popping. Besides trimming your nails, ho

Ivan

Use gloves so your nails wont puncture it and because its soft

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3 years ago

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In a typical analysis, 15 ml of an aqueous solution containing an unknown amount of acetylcholine had a ph of 7.65. When incubat

melomori [17]

pH of the acetyl choline solution before incubation = 7.65

$[H_{3}O^{+}]=10^{-7.65}=2.24*10^{-8}M$

pH of the solution after incubation = 6.87

$[H_{3}O^{+}]=10^{-6.87}=1.35*10^{-7}M$

The difference in concentration of hydronium ion before and after incubation

= $1.35*10^{-7}M$ - $2.24*10^{-8}M$ = $1.126*10^{-7}M$

This difference in hydronium ion concentration can be attributed to the increase in the concentration of acetic acid, which is formed when acetylcholine is hydrolyzed by acetycholinesterase. The mole ratio of acetylcholine to acetic acid is 1:1.

Therefore the moles of acetylcholine = $15 mL * \frac{1L}{1000mL}*\frac{1.126*10^{-7}mol }{L}=1.689*10^{-9}mol$

7 0

3 years ago