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DiKsa [7]
3 years ago
5

We are driving to Orlando. The sign says

Chemistry
2 answers:
Sav [38]3 years ago
8 0

Answer:

B! 145,000

Explanation:

your welcome love!

Igoryamba3 years ago
5 0

Answer:

b

Explanation:

there is 1000m in 1 km so the ans is literally just 145x1000 m which is 145000m

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The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCl (aq)) in 133 mL of water is ___ M (2 decimal
Lera25 [3.4K]

The molarity is 3.50 M/L.

Explanation:

Molarity is found to know the amount of the solute ions present in the given volume of solution. So we determine it using the ratio of the moles of solute to the volume of the solution.

As here the weight of the solute which is hydrochloric acid is given as 17g, so we need to find the moles of it. This can be done by dividing the given amount of HCl with the molecular weight of HCl.

Molecular weight of HCl = 1.01 + 35.45 = 36.46 g/mol

So the number of moles of HCl present here will be

No.of moles = \frac{17}{36.46} =0.466

So, 0.466 moles of HCl is present in the solution.

Molarity = \frac{No.of moles of solute}{Volume of solution} = \frac{0.466}{133*10^{-3} }

Molarity = 3.50 M/L

Thus, the molarity is 3.50 M/L.

7 0
4 years ago
Alpha particles are most like...
gogolik [260]
They are identical to the nucleus of the helium-4 atom. So the answer is helium atoms.

Hope this helps! :)
4 0
4 years ago
Iron-59 which is used to diagnose anaemia has a half life of 45days, what fraction of it is left in 90 days
rodikova [14]

Answer:

0.25 of the original

Explanation:

(0.5)^(90/45)

7 0
3 years ago
3) _Na +<br> |H,80_ - _Na,304<br> _Na2SO4 + _H2
erik [133]
Hey


How was your day
3 0
3 years ago
4HCI + O2 =2H20 + Cl2
Sergio039 [100]

The rate of the backward reaction increases

Explanation:

It is evident that if the reaction is left to proceed spontaneously, the forward reaction is favored because it results in a decrease in pressure in the system (The total reactants have 5 moles and the products have 3 in total).

Increasing H₂O concentration is then reaction, therefore, stymies the forward reaction and favors the reserves reaction. This is because the reverse reaction will lead to reduced pressure.

6 0
3 years ago
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