How many hydrogen atoms are in an acyclic alkane with 13 carbon atoms?

How many moles of O2 are made from 4 moles of H2O

algol13

Eight moles of O2 are found in 4 moles of H2O

3 0

3 years ago

A nuclear reaction in which two atomic nuclei are combined to produce a single large nucleus and energy is released by the react

Naily [24]

I believe what you are looking for is Fusion<span />

5 0

4 years ago

Which of the following elements has the lowest normal boiling point? 4 points A. Ne B. He C. Ar D. Kr

yanalaym [24]

Answer:

B. He

Explanation:

8 0

3 years ago

What experimental evidence leads scientists to believe that only quantized electronic energy states exist in atoms?

MAXImum [283]

Absorption and emmision spectrum experiment.

3 0

3 years ago

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Calculate the pH of: (a) 0.1M HCl; (b) 0.1M NaOH; (c) 3 X 10% M HNO3; (d) 5 X 10-10 M HCIO.; and (e) 2 x 10-8 M KOH.

Shtirlitz [24]

Answer:

(a) $pH = -Log (0.1M) = 1$

(b) $pH = -Log (10^{-13}M) = 13$

(c) $pH = -Log (3x10^{-3}M) = 2.5$

(d) $pH = -Log (4.93x10^{-10}M) = 9.3$

(e) $pH = -Log (5^{-7}M) = 6.3$

Explanation:

To calculate de pH of an acid solution the formula is:

$pH = -Log ([H^{+}]) = 1$

were [H^{+}] is the concentration of protons of the solution. Therefore it is necessary to know the concentration of the protons for every solution in order to solve the problem.

(a) and (c) are strong acids so they dissociate completely in aqueous solution. Thus, the concentration of the acid is the same as the protons.

(b) and (e) are strong bases so they dissociate completely in aqueous solution too. Thus, the concentration of the base is the same as the oxydriles. But in this case it is necessary to consider the water autoionization to calculate the protons concentration:

$K_{w} =[H^{+} ][OH^{-}]=10^{-14}$