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3 years ago

13

A red car and a blue car collide. What would be an example of Locard's exchange principle in this situation?

1 answer:

Lelu [443]3 years ago

8 0

Answer:

The blue car left paint on the red car

Explanation:

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What is the molarity of a solution that contains 25 g of HCl in 150 mL of solution??

Stels [109]

To find molarity
1) number of mol of solute.
Solute is HCl.
M(HCl)= 1.0+35.5 =36.5 g/mol

25g *1 mol/36.5 g = 25/36.5 mol HCl

2) Molarity is number of mole of the solute in 1 L solution.
150 mL = 0.150 L

(25/36.5 mol HCl )/(0.150 L) = 25/(36.5*0.150) ≈ 4.57≈4.6 mol/L

3 0

3 years ago

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Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each:

Sladkaya [172]

Answer:

Part A:

Charge is $P^{3-}$

Configuration is $1s^2 2s^22p^63s^23p^6$

Part B:

Charge is $Mg^{2+}$

Configuration is $1s^2 2s^22p^6$

Part C:

Charge is $Se^{2-}$

Configuration is $1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

Explanation:

Monatomic ions:

These ions consist of only one atom. If they have more than one atom then they are poly atomic ions.

Examples of Mono Atomic ions: $Na^+, Cl^-, Ca^2^+$

Part A:

For P:

Phosphorous (P) has 15 electrons so it require 3 more electrons to stabilize itself.

Charge is $P^{3-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^6$

Part B:

For Mg:

Magnesium (Mg) has 12 electrons so it requires 2 electrons to lose to achieve stable configuration.

Charge is $Mg^{2+}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^6$

Part C:

For Se:

Selenium (Se) has 34 electrons and requires two electrons to be stable.

Charge is $Se^{2-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

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3 years ago

What causes red blood cells to become sickle-shaped in a person with sickle

White raven [17]

Answer:

A. Inheriting a specific gene

Explanation:

I hope this helps! ^^

☁️☁️☁️☁️☁️☁️☁️

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2 years ago

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Which of the following are the starting substances in photosynthesis?

Misha Larkins [42]

A: water and carbon dioxide.

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3 years ago

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Calculate the normality of a solution containing 147 g of h2s04 in 2L of solution

babunello [35]

I am not sure plz show me the question

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3 years ago