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2 years ago

An acid increases the hydroxide ion concentration of water.TrueorFalse

Chemistry

2 answers:

ASHA 777 [7]2 years ago

3 0

False is the answer!

kvasek [131]2 years ago

3 0

<span>false.

acid increase will increase the hydronium ion concentration
increasing the base will increase hydroxide ion concentration.</span><span>

</span>

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A certain box contains 200 particles of an ideal gas. how many times more likely is it to find the particles evenly split betwee

Strike441 [17]

Each particle has two possibilities: either it is on the left hand side or it is on the right hand side.

The probability of having them equally split is

P(100,100) = 200C100 / 2^200

where 200C100 is the binomial coefficient.

For the uneven distribution we have

P= 2 * 200C160 / 2^200

where the factor 2 comes in because we could have 160/40 or 40/160 as a division.

So the ratio of probabilities is

200C100 /(2 * 200C160 )

= 2.2 * 10^16

Hope this helps!

5 0

2 years ago

Which type of rock is most likely to form because of high heat and pressure?

expeople1 [14]

Answer:

Metamorphic Rock

Explanation:

Metamorphic rocks are formed because of high heat and pressure . Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock. The parent rock can be either sedimentary, igneous, or even another metamorphic rock

6 0

2 years ago

Read 2 more answers

5) Determine the mass if lithium hydroxide that is produced when 12.87 g of lithium

netineya [11]

Answer: 26.54 grams

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of lithium nitride}=\frac{12.87g}{34.83g/mol}=0.369moles$

$Li_3N+3H_2O\rightarrow 3LiOH+NH_3$

$Li_3N$ is the limiting reagent as it limits the formation of product and $H_2O$ is the excess reagent

According to stoichiometry :

As 1 moles of $Li_3N$ give = 3 moles of $LiOH$

Thus 0.369 moles of $O_2$ give = $\frac{3}{1}\times 0.369=1.108moles$ of $LiOH$

Mass of $LiOH=moles\times {\text {Molar mass}}=1.108moles\times 23.95g/mol=26.54g$

Thus 26.54 g of $LiOH$ will be produced from the given mass.

4 0

2 years ago

The reader can infer from the article that __________.

marin [14]

The answer is definitely D

5 0

2 years ago

"Atoms of magnesium and oxygen form ions and ionic bonds "The difference is that instead of having each atom gain or lose one el

Tanzania [10]

Explanation:

Atomic number of magnesium is 12 and its electronic distribution is 2, 8, 2. To attain noble gas configuration it is necessary for the magnesium atom to lose two valence electrons and therefore, it forms $Mg^{2+}$ ions.

On the other hand, atomic number of oxygen atom is 8 and its electronic distribution is 2, 6. To attain noble gas configuration it needs to gain two electrons. And, on gaining the electrons it forms $O^{2-}$ ions.

Hence, when both magnesium and oxygen ions chemically combine with each other then it forms the compound magnesium oxide ( $MgO$ ).

This is because magnesium transfer its two valence electrons to the oxygen atom and due to the formation of opposite charges on these atoms they get attracted towards each other.

5 0

3 years ago