The chemical equation of rusting of iron is given

Chemistry

1 answer:

artcher [175]2 years ago

6 0

Answer:

${ \tt{(a). { \bf{reactants : { \tt{iron \: and \: oxygen}}}}}} \\ { \bf{products : { \tt{iron(iii)oxide}}}} \\ \\ { \tt{(b).}} \: { \bf{1.204 \times {10}^{24} \: atoms}} \\ { \tt{(c).}} \: { \tt{4Fe +3 O _{2} → 2Fe _{2}O _{3}}} \\ \\ { \underline{ \blue{ \tt{becker \: jnr}}}}$

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Which of the following is the correct set up AND answer to convert 6.25 x

BlackZzzverrR [31]

Answer:

Explanation:

How many mols do you have?

1 mol = 6.02 * 10^23 atoms

x mol = 6.25 * 10 ^32 atoms

1/x = 6.02*10^23 / 6.25 * 10^32 Cross multiply

6.02 * 10^23 * x = 1 * 6.25 * 10^32 Divide by 6.02 * 10^23

x = 6.25 * 10*32/ 6.02 ^10^23

x = 1.038 * 10^9 mols which is quite large.

Find the number of grams. (Use the value for copper on your periodic table. I will just use an approximate number.)\

1 mol of copper = 63 grams.

1.038 * 10^9 mols of copper = x

1/1.038 * 10^9 = 63/x Cross multiply

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Answer:

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3 years ago

Which isotope will spontaneously decay and emit particles with a charge of +2?

VikaD [51]

Answer: The correct option is 4.

Explanation: All the options will undergo some type of radioactive decay processes. There are 3 decay processes:

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$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha$

2) Beta-minus decay: It is a decay in which a beta particle is released. The beta particle released has a mass number of 0 and a charge of (-1).

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