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3 years ago

11) A sample of rhenium of suspected extrasolar origin (translation: not from this solar

Chemistry

1 answer:

jarptica [38.1K]3 years ago

4 0

Answer:

Atomic number 75 is dedicated to an element named rhenium and has been given Re as its chemical name.

Explanation:

With a really low concentration it is one of the rarest metals that is found in Earth's crust.

Like all other elements rhenium also has certain isotopes among with 185 and 187 are the most stable ones. Hence these two are the ones that are naturally available abundance is 34% and 63% respectively.

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What is the transmittance of 35.3%

andrey2020 [161]

This might be wrong,but im pretty sure its 0.10 m

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3 years ago

Which of the following tends to form anions when bonding with other elements?

yarga [219]

Answer: it’s D

Explanation:

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3 years ago

Write balanced equations for the following reactions

Arte-miy333 [17]

Answer:

See explanation

Explanation:

The shorthand nuclear reaction equations have been given; the first particle in the parentheses is a reactant particle while the second particle is a product particle. These can now be rewritten as the longhand equations as follows;

238/92U + 4/2 He -------> 241/94Pu + 1/0 n

238/92U + 4/2 He ------> 241/94Pu + 1/0 n

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3 years ago

Sulfur has an atomic mass of 32 u and Avogadro's number is 6 × 1023 formula units/mole. The number of sulfur atoms in 1 g of sul

Vikki [24]

Answer:

The number of sulfur atoms in 1 g of sulfur is:- $1.875\times 10^{22}$ atoms

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by $N_0$ .

Avogadro constant:-

$N_a=6\times 10^{23}$

Given atomic mass of sulfur = 32 u

Which means that:-

32 g of sulfur contains $6\times 10^{23}$ of atoms

Also,

1 g of sulfur contains $\frac {6\times 10^{23}}{32}$ of atoms

So, The number of sulfur atoms in 1 g of sulfur is:- $1.875\times 10^{22}$ atoms

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3 years ago