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3 years ago

An experiment was carried out to determine whether drinking caﬀeinated soda increases pulse rate.

Chemistry

1 answer:

Gelneren [198K]3 years ago

3 0

Answer:

Explanation:

The value of n that satisfies the equation 7/n=8/7 is

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Iwhich

Irina18 [472]

Answer:

KCl is an Ionic compound

Explanation:

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3 years ago

PLS I REALLY NEED HELP DUE FODAY

Gekata [30.6K]

<u>Answer:</u> The equilibrium constant for the reaction is 54.47

<u>Explanation:</u>

The equilibrium constant is defined as the ratio of the concentration of products to the concentration of reactants raised to the power of the stoichiometric coefficient of each. It is represented by the term $K_{eq}$

The given chemical equation follows:

$H_2+I_2\rightleftharpoons 2HI$

The expression for equilibrium constant will be:

$K_{eq}=\frac{[HI]^2}{[H_2][I_2]}$

We are given:

$[HI]_{eq}=1.3544\times 10^{-2}M$

$[H_2]_{eq}=4.5647\times 10^{-3}M$

$[I_2]_{eq}=7.378\times 10^{-4}M$

Putting values in above expression, we get:

$K_{eq}=\frac{(1.3544\times 10^{-2})^2}{(4.5647\times 10^{-3})(7.378\times 10^{-4})}\\\\K_{eq}=54.47$

Hence, the equilibrium constant for the reaction is 54.47

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3 years ago

Which one of these is not involved in a Combustion reaction ?

vlada-n [284]

Answer:

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7 0

2 years ago

What are types of elements from ionic attractions

sladkih [1.3K]

First, we have the ionic elements. This type of elements involved completely transferring of one ion to another in order to form a bond. There is also the type which forms the covalent bond which involves only sharing of the electrons. Those that exhibits the polar bonds and also the hydrogen bonding.

5 0

3 years ago

A 40.15 gram sample of a hydrate of Na2SO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. Af

mario62 [17]

Answer:

The formula of the hydrate of the sodium sulfate is : $Na_2SO_4.7H_2O$