3 years ago

How many neutrons are there in a neutral argon atom? Show how you found your answer on your scratch paper.

1 answer:

5 0

There are 22 neutrons in an argon atom. you simply subtract the proton count (atomic number) from the average atomic mass. WORK: 40-18=22

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Calorimeter containing 1000 grans of water the initial temperature of water is 24.85 degrees . the heat of water is 4.184 j/g de

kvasek [131]

<h3><u>Answer;</u></h3>

10.80 ° C

<h3><u>Explanation;</u></h3>

From the information given;

Initial temperature of water = 24.85°C

Final temperature of water = 35.65°C

Mass of water = 1000 g

The specific heat of water ,c = 4.184 J/g °C.

The heat capacity of the calorimeter = 695 J/ °C

Change in temperature ΔT = 35.65°C - 24.85°C

= 10.80°C

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3 years ago

Which is a characteristic of a strong base

Allisa [31]

The third one, it releases H+ions into a solution.

7 0

4 years ago

For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 13.1 moles of methane, CH4 ?

BARSIC [14]

Answer:

7.0

Explanation:

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3 years ago

Caffeine (C8H10N4O2) is a stimulant found in coffees and teas. When dissolved in water, it can accept a proton from a water mole

Olenka [21]

Answer:

See figure 1

Explanation:

If we want to find the acid and the Brønsted-Lowry base, we must remember the definition for each of these molecules:

-) Acid: hydrogen donor

-) Base: hydrogen acceptor

In the <u>caffeine structure,</u> we have several atoms of nitrogen. These nitrogen atoms have the ability to <u>accept</u> hydronium ions ( $H^+$ ). Therefore the caffeine molecule will be the base since it can accept

If caffeine is the base, the water must be the acid. So, the water in this reaction donated a hydronium ion.

<u>Thus, caffeine is the base and water the acid. (See figure 1)</u>

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3 years ago

What happens to the length of shadows as noon approaches on a sunny day?

Tems11 [23]

Answer:

The answer is D

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3 years ago

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