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Nataly [62]
3 years ago
6

What do the toxic chemicals used in paving roads, rocket fuel, and rat poison have in common? What do the toxic chemicals used i

n paving roads, rocket fuel, and rat poison have in common?
Chemistry
1 answer:
MArishka [77]3 years ago
3 0

Answer: Arsenic

Explanation:. Arsenic,  is found in several different chemical forms in paving roads--- arsenic release from asphalt, rocket fuel--- from combustion of fuel causing release of arsenic and carbon monoxide  and among the composition of  rat poison in different oxidation states,which can lead to toxicity called  arsenic poisoning--- which occurs when much arsenic  is accumulated in the body causing  acute and chronic adverse health effects, from diarrhea to cancer.

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Help Pls thnk you !!!!!!!!!!!!!!!!!!!!!!!!!
uysha [10]
The answer is double displacement is the answer
3 0
3 years ago
Which of the following would be the most likely adaptation of a whale population to tolerate a rise in ocean temperatures?
GREYUIT [131]
It is better for the whales to go where the whales have the ability to dive longer and deeper to find cooler water.
5 0
3 years ago
How many particles of Na are there in 1.43g of a molecular compound with a Molar mass of 23g?
Olin [163]

Answer:

3.74 x 10²² particles

Explanation:

Given parameters:

Mass of compound  = 1.43g

Molar mass of compound  = 23g

Unknown:

Number of particles of sodium = ?

Solution:

To find the number of particles of Na in the compound, we need to obtain the mass of sodium from the total mass given;

          Mass of sodium  = \frac{molar mass of Na}{molar mass of compound} x mass of sample

                                      = \frac{23}{23}  x 1.43g

                                       = 1.43g

Now find the number of moles of this amount of Na in the sample;

          Number of moles  = \frac{mass}{molar mass} = \frac{1.43}{23}  = 0.062mole

Now;

                    1 mole of substance  = 6.02 x 10²³ particles

                       0.062 mole of substance  =  0.062 x 6.02 x 10²³ particles

                                                                     = 3.74 x 10²² particles

7 0
3 years ago
Calculate the density in g/mL of 2.0L of gasoline that weighs 1.26 kg
quester [9]
2.0 L in mL :

2.0 x 1000 => 2000 mL 

1.26 kg in g :

1.26 x 1000 => 1260 g

D = mass / volume

D = 1260 / 2000

D = 0.63 g/mL

hope this helps!

5 0
3 years ago
To gravimetrically analyze the silver content of a piece of jewelry made from an alloy of Ag and Cu, a student dissolves a small
Ipatiy [6.2K]

Answer:

Adding a solution containing an anion that forms an insoluble salt with only one of the metal ions.

Explanation:

The student have in solution Ag⁺ and Cu²⁺ ions but he just want to analyze the silver, that means he need to separate ions.

Centrifuging the solution to isolate the heavier ions <em>FALSE </em>Centrifugation allows the separation of a suspension but Ag⁺ and Cu²⁺ are both soluble in water.

Adding enough base solution to bring the pH up to 7.0 <em>FALSE </em>At pH = 7,0 these ions are soluble in water and its separation will not be possible.

Adding a solution containing an anion that forms an insoluble salt with only one of the metal ions <em>TRUE </em>For example, the addition of Cl⁻ will precipitate the Ag⁺ as AgCl(s) allowing its separation.

Evaporating the solution to recover the dissolved nitrates. <em>FALSE</em> . Thus, you will obtain the nitrates of these ions but will be mixed doing impossible its separation.

I hope it helps!

8 0
3 years ago
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