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SOVA2 [1]
3 years ago
7

What variables can be used to determine the pressure exerted by a gas?

Chemistry
1 answer:
Molodets [167]3 years ago
3 0
Pressure = force/area
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3 years ago
What is the isotope notation for an ion of silver-109 with a charge of positive 1
Arisa [49]

Answer:

The isotope notation for an ion of silver-109 with a charge of positive 1 is _{47}^{109}Ag^{1+}.

Explanation:

The elements with same atomic number with different mass numbers are called isotopes.

The isotopes of silver is as follows.

_{47}^{109}Ag,_{47}^{107}Ag

From the above two isotopes have same atomic number and different mass number.

From the given,the isotope notation for an ion of silver-109 with a charge of positive 1

It can be represented is as follows.

_{47}^{109}Ag^{1+}

General representation of isotope is as in attachment.

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3 years ago
Identify the correct statement regarding the mole. a. A mole of oxygen gas contains 6.02 1023 atoms. b. A mole of chlorine gas c
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Answer:

b. A mole of chlorine gas contains 2 (6.02 * 10^23 ) atoms.

c. A mole of carbon dioxide contains two moles of oxygen molecules (CO2)

e. A mole consists of the number of particles in exactly 12g of naturally occurring carbon.

Explanation:

A mole of oxygen gas (O2) contains 2 (6.02 * 10^23) atoms

A mole of Ammonia gas (NH3) has a mass of 17.031g/mol

A mole is defined as the unit used in measurement of the amount of substances in the International System of Units.

A mole was initially defined as the number of particles in exactly 12g of naturally occurring carbon.

Therefore, options b, c and e are correct

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