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3 years ago

And identify the type of reaction Fe2O4 + Al → A1,03 + Fe

Chemistry

1 answer:

Alona [7]3 years ago

6 0

Oxidation-reduction (redox) reaction

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Aluminum oxide reacts with hydrochloric acid to produce salt. What is the name of the salt produced?

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Answer:

IT IS CHLORIDE!

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3 years ago

The half-life of a radioactive isotope is the amount of time it takes for a quantity of that isotope to decay to one half of its

Sedaia [141]

Radio active decay reactions follow first order rate kinetics.

a) The half life and decay constant for radio active decay reactions are related by the equation:

$t_{\frac{1}{2}} =$ $\frac{ln 2}{k}$

$t_{\frac{1}{2}} = \frac{0.693}{k}$

Where k is the decay constant

b) Finding out the decay constant for the decay of C-14 isotope:

$Decay constant (k) = \frac{0.693}{t_{\frac{1}{2}}}$

$k = \frac{0.693}{5230 years}$

$k = 1.325 * 10^{-4} yr^{-1}$

c) Finding the age of the sample :

35 % of the radiocarbon is present currently.

The first order rate equation is,

$[A] = [A_{0}]e^{-kt}$

$\frac{[A]}{[A_{0}]} = e^{-kt}$

$\frac{35}{100} = e^{-(1.325 *10^{-4})t}$

$ln(0.35) = -(1.325 *10^{-4})(t)$

t = 7923 years

Therefore, age of the sample is 7923 years.

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3 years ago

An ionic bond involves the.....

Svetllana [295]

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities, and is the primary interaction occurring in ionic compounds

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The other difference is that some animals have medusa in their life or polp in their life cycle.

Hope these two differences helps :D

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2 years ago

Thinking and questioning is the start of the scientific inquiry process. Please select the best answer from the choices provided

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Yes thats true! You always have to think about the question or project before you start a science experiment! :)

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