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SCORPION-xisa [38]
2 years ago
15

What can you say about an atom with a -2 ion of oxygen-17? WILL GIVE BRAINLIEST

Chemistry
1 answer:
olga nikolaevna [1]2 years ago
3 0

Answer:

The mass number of an isotope is indicated in the name of the isotope by writing the name of the element followed by a hyphen and the mass number.

Explanation:

Examples include carbon-14, uranium-235, and oxygen-17.

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How do I solve the following word problem: The half-life of Phosphorus - 32 is 14.3 days. It is used to study a plant's use of f
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Half life is the time that it takes for half of the original value of some amount of a radioactive element to decay.

We have the following equation representing the half-life decay:

A=A_o\times2^{(-\frac{t}{t_{half}})_{}_{}}

A is the resulting amount after t time

Ao is the initial amount = 50 mg

t= Elapsed time

t half is the half-life of the substance = 14.3 days

We replace the know values into the equation to have an exponential decay function for a 50mg sample

A=\text{ 50 }\times2^{\frac{-t}{14.3}}

That would be the answer for a)

To know the P-32 remaining after 84 days we have to replace this value in the equation:

\begin{gathered} A=\text{ 50 }\times2^{\frac{-84}{14.3}} \\ A=0.85\text{ mg} \end{gathered}

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What structure contains ions that are arranged in an alternative repeating 3-D pattern ?
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What information about an atom's properties can you read from the periodic table?
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The principal thing that one can read from a periodic table is the atomic number which is the number in the box that the element symbol appears and it means the number of protons in the nucleus of its atom and this number  determines its chemical properties and is unique for each chemical element. The table is color coded to show the different types of elements ie "transition metals, alkali metals, noble gases" etc. and these different types are grouped together.
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If a certain mass of mercury has a volume of 0.002 m2 at a temperature of 20 celsius, what will be the volume of 50 celsius?
SIZIF [17.4K]

Answer: 0.0022m3

Explanation:

Initial volume of mercury V1 = 0.002m3 (note that the unit of volume can be cm3, m3, dm3 or liters)

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Final temperature T2 = 50°C

( 50°C + 273°C = 323K)

Final volume V2 = ?

According to Charle's law, the volume of a fixed mass of a gas is directly proportional to the temperature.

Mathematically, Charles' Law is expressed as: V1/T1 = V2/T2

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To get the value of V2, cross multiply

V2 = (323 x 0.002) / 293

V2 = 0.646 / 293

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Thus, the new volume of mercury will be 0.0022m3

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