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9*11 = 9*(10 + 1) = 9*10 + 9*1 = 9*10 + 9.

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Explain how to find the distance traveled in centimeters if it was 15 millimeters?

1.5 cm 1 cm = 10 mm 1 mm = 0.1 cm


How many moles are in 1.63x10 to the 24th atoms?

To find the number of moles in (1.63 \times 10^{24}) atoms, you can use Avogadro's number, which is approximately (6.022 \times 10^{23}) atoms per mole. Divide the number of atoms by Avogadro's number: [ \text{moles} = \frac{1.63 \times 10^{24}}{6.022 \times 10^{23}} \approx 2.71 \text{ moles}. ] Thus, there are approximately 2.71 moles in (1.63 \times 10^{24}) atoms.


Calculate the hydronium ion concentration for an aqueous solution in which the hydroxide ion concentration is 1 10 negative 11 M?

To find the hydronium ion concentration in an aqueous solution, you can use the relationship between the concentrations of hydronium ions ([H_3O^+]) and hydroxide ions ([OH^-]) given by the ion product of water at 25°C, which is (K_w = [H_3O^+][OH^-] = 1 \times 10^{-14}). Given that ([OH^-] = 1 \times 10^{-11} , M), you can rearrange the equation to find ([H_3O^+]): [ [H_3O^+] = \frac{K_w}{[OH^-]} = \frac{1 \times 10^{-14}}{1 \times 10^{-11}} = 1 \times 10^{-3} , M. ] Thus, the hydronium ion concentration is (1 \times 10^{-3} , M).


What does 5 times 1 times 2 times 3 times 4 times 5 times 6 times 7 times 8 times 9 times 10 times?

if you ignore the initial 5times for now there is actually a button for this kind of calculation on your calculator(scientific- but still cheap mine was £10) it is shown as x! in this case 10! is 3628800 and remembering the initial 5times= 18144000 this kind of calculations are used for figuring possible combinations of letters and numbers.


What is 0.2 times as much as 10 times?

It is 2 times.It is 2 times.It is 2 times.It is 2 times.