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2 years ago

How would you know if this combination is likely to be found in dirt? Please explain!

Chemistry

2 answers:

Natasha2012 [34]2 years ago

5 0

No at least I don’t think there would be

Elan Coil [88]2 years ago

4 0

No it is not likely. That is a ratio of 10:4 N^14 and N^15 which doesn’t work. It needs a higher amount

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Find the pH. What are the pH values for the following solutions? (a) 0.1 M HCl (b) 0.1 M NaOH (c) 0.05 M HCl (d) 0.05 M NaOH

slega [8]

Answer:

(a) $pH=1$

(b) $pH=1.3$

(d) $pH=12.7$

Explanation:

Hello,

In this case, we define the pH in terms of the concentration of hydronium ions as:

$pH=-log([H^+])$

Which is directly computed for the strong hydrochloric acid (consider a complete dissociation which means the concentration of hydronium equals the concentration of acid) in (a) and (c) as shown below:

(a)

$[H^+]=[HCl]=0.1M$

$pH=-log(0.1)=1$

(b)

$[H^+]=[HCl]=0.05M$

$pH=-log(0.05)=1.3$

Nevertheless, for the strong sodium hydroxide, we don't directly compute the pH but the pOH since the concentration of base equals the concentration hydroxyl in the solution:

$[OH^-]=[NaOH]$

$pOH=-log([OH^-])$

$pH=14-pOH$

Thus, we have:

(b)

$pOH=-log(0.1)=1\\pH=14-1=13$

(d)

$pOH=-log(0.05)=1.3\\pH=14-1.3=12.7$

Best regards.

5 0

3 years ago

Gas hydrates are compact chemical structures made of natural gas and

Oksana_A [137]

Answer:

Option-B (water) is the correct answer.

Explanation:

Gas hydrates are made up of Solid-Ice water and a natural gas like Methane gas trapped in the lattice of ice water. Gas hydrates are mainly found deep down in the sea where the atmospheric pressure is greater than 1 atm.

Generally Gas hydrates have two main applications.

a) It stabilizes the sea floor other wise its melting will cause land sliding in sea floor.

b) Secondly, it traps a green house gases like Methane, if released these gases could produce Climate changes.

6 0

2 years ago

Read 2 more answers

How would you remove a metal spoon from a pot of boiling water without getting burned?

zaharov [31]

Hold a rag with the hand that is picking up the spoon.

3 0

3 years ago

when both water and salt are present in a solution and the cell needs water which process enables the cell to obtain the water w

noname [10]

Osmosis through a semipermeable membrane

I hope this helps you
:)

4 0

2 years ago

How many molecules of n2 are in a 200.0 ml container at 780 mmhg and 135∘c?

Neporo4naja [7]

By use of ideal gas equation PV= nRT where n is the number of moles,P = pressure, V = volume, R= gas constant (0.08206 L. atm/ mol.k) ant T is the temperature,

to calculate the number of moles(n) =PV/RT

convert ml to L, that is 200/1000= 0.2 L

convert mmHg to atm, that is 780mm hg x 1atm/ 760 mm hg= 1.026 atm

convert temperature to kelvin, that is 135 +273= 408 k
n is therefore= (0.2 x 1.026)/ ( 0.08206 x 408)= 6.129 x10^-3 moles

from avogadro constant 1moles = 6.02 x10^23 molecules what about 6 .129 x10^-3 moles

= ( 6.02 x10^23) x (6.129 x10^-3)/ 1mole = 3.69 x10^21 molecules

8 0

3 years ago