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3 years ago

How is a mole like a dozen?

Chemistry

2 answers:

nasty-shy [4]3 years ago

7 0

The mole is a unit for counting 6.02 1023 representative particles.

The dozen is used to count 12 items

12345 [234]3 years ago

3 0

Answer:

Answer in explanation.

Explanation:

The mole is a unit for counting 6.02 1023 representative particles. The dozen is used to count 12 items.

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Predict with a reason, what would happen to a packet of potato chips that is packed with air when it is taken to o high mountain

olga2289 [7]

Explanation:

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2 years ago

Convert a speed of 259 cm/s to units of inches per minute. Also, show the unit analysis by dragging components into the unit‑fac

igomit [66]

Answer:

$6118.11\frac{in}{min}$

Explanation:

Hello,

In this case, by knowing that 1 inch equals 2.54 cm and 60 seconds equals 1 min, the resulting value results:

$=259\frac{cm}{s}*\frac{1in}{2.54cm}*\frac{60s}{1min}\\ \\=6118.11\frac{in}{min}$

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3 years ago

What is the atomic number? what is the atomic mass (a.k.a. mass number?

Oksanka [162]

Is the number of protons in an atom, or the total positive charge of an atom.

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2 years ago

Please help make sure its correct thanks

Wewaii [24]

The empirical formula of metal iodide : CoI₃(Cobalt(III) Iodide)

<h3>Further explanation</h3>

13.02 g sample of Cobalt , then mol Co(MW=58.933 g/mol) :

$\tt mol=\dfrac{mass}{Ar}=\\\\mol=\dfrac{13.02~g}{58.933}\\\\mol=0.221$

Mass of metal iodide formed : 97.12 g, so mass of Iodine :

$\tt =mass~metal~iodide-mass~Cobalt\\\\=97.12-13.02\\\\=84.1~g$

Then mol iodine (MW=126.9045 g/mol) :

$\tt \dfrac{84.1}{126.9045}=0.663$

mol ratio of Cobalt and Iodine in the compound :

$\tt 0.221\div 0.663=1\div 3$

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2 years ago

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lisabon 2012 [21]

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2 years ago