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3 years ago

PLEASE HELP ONLY ONE QUESTION

Chemistry

2 answers:

rosijanka [135]3 years ago

7 0

When reactant particles collide with proper energy and proper orientation

ad-work [718]3 years ago

6 0

A chemical reaction occurs when reactant particles collide with proper energy and proper orientation.

Hope this helps! Have a great day! <3

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At what temperature will 2.50 moles of ideal

Sever21 [200]

Answer: 1,218K

Explanation:

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3 years ago

The solubility of magnesium phosphate at a given temperature is 0.173 g/L. Calculate the Ksp at this temperature. After you calc

jek_recluse [69]

Answer: $K_{sp}=1.25\times 10^{-14}$

$pK_{sp}=13.90$

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as $K_{sp}$

The equation for the ionization of magnesium phosphate is given as:

$Mg_3(PO_4)_2\rightarrow 3Mg^{2+}+2PO_4^{3-}$

When the solubility of $Mg_3(PO_4)_2$ is S moles/liter, then the solubility of $Mg^{2+}$ will be 3S moles\liter and solubility of $PO_4^{3-}$ will be 2S moles/liter.

Thus S = 0.173 g/L or $\frac{0.173g/L}{262.8g/mol}=0.00065mol/L$

$K_{sp}=(3S)^3\times (2S)^2$

$K_{sp}=108S^5$

$K_{sp}=108\times (0.00065)^5=1.25\times 10^{-14}$

$pK_{sp}=-log(K_{sp})=\log (1.25\times 10^{-14})=13.90$

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3 years ago

True or False. If a fire destroyed all of the grass in a grassland, this would NOT affect the biodiversity of this ecosystem.

Andrews [41]

Answer:

This is false

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3 years ago

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Olivia, a Latina student, is told that she can check only two books out of the library at a time, but Leann, a white student, is

Sliva [168]

Answer:

Explanation:

the others are rude, and rather support this, while a helps to support the ending of white privlige

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3 years ago

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Answer the following questions:

Lynna [10]

The relationship of radiation with distance obeys the inverse square law. Therefore, doubling the distance decrease the radiation by a factor of 4. The new count is 250.
1) Applying the same principle, the count decreases by a factor of 100. The new count is 10
2) An alpha particle is 4He2 and the Hydrogen can be represented as 1H1
14N7 + 4He2 - 1H1
= 17X8
Proton number 8 belongs to Oxygen. Therefore, the resultant nucleus is:
17O8
3) 185Au79 - 4He2
= 181Ir77
4) X - 4He2 = 234Th90
X = 238U92
5) Beta emission results in the same nucleon number but an increase in the proton number; therefore, the result is:
234Pa91

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3 years ago