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2 years ago

An atom of oxygen (atomic number 8) has a mass number of 17. How many neutrons are in that atom?

Chemistry

1 answer:

ludmilkaskok [199]2 years ago

3 0

<h2>Answer: # of neutrons = 9</h2>

<h3>Explanation:</h3>

# of neutrons = mass number - atomic number

= 17 - 8

= 9

<h3>∴ number of neutrons in an atom of oxygen of mass number 17, is 9.</h3>

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3 years ago

Calculate a reasonable amount (mass in g) of your unknown acid to use for a titration. You will want about 30 mL of titrant to g

Vinil7 [7]

Answer:

"0.60 g" is the appropriate solution.

Explanation:

The given values are:

Volume of base,

= 30 ml

Molarity of base,

= 0.05 m

Molar mass of acid,

= 400 g/mol

As we know,

⇒ $Molarity=\frac{Number \ of \ moles \ of \ base}{Number \ of \ solution}$

On substituting the values, we get

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hence,

⇒ $Moles \ of \ acid=\frac{Mass \ of \ acid}{Molar \ mass \ of \ acid}$

On substituting the values, we get

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8 0

3 years ago

Force = 2.32 N<br> Acceleration = 0.19 m/s2<br> Mass= ?

Mkey [24]

mass = 12.2 kg

Explanation:

To find the mass we use the following formula (Newton's Second Law of Motion):

force = mass × acceleration

mass = force / acceleration

mass = 2.32 N / 0.19 m/s²

mass = 12.2 kg

Learn more about:

Newton's Second Law of Motion

brainly.com/question/834262

#learnwithBrainly

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3 years ago

6.201cm+7.4cm+0.68 cm+12.0cm

zimovet [89]

If you want the answer is centimeters is it going to be:
26.281 cm
If it make it easier for you to solve add 6.201 and 7.4 which will equal 13.601. Then add .68 to 13.601 which equals 14.281. Last add 12 to 14.281 which equals 26.281.

Hope this helps.

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3 years ago

4. A student was not sure that she accurately recorded the final temperature of her melting point sample. Therefore, she decided

Mumz [18]

Answer:

AWF DSF

Explanation:

W AFSDDDDDDDDD

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2 years ago