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asambeis [7]
3 years ago
13

What would happen if HF were added to water?

Chemistry
1 answer:
Marta_Voda [28]3 years ago
5 0

Answer: ITS A

Explanation:

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Can carbon atoms share electron with four hydrogen atoms to form a methane molecule? Explain.
Agata [3.3K]

hopefully this helps. if it doesn't then I'm really sorry to say that I wouldn't know.

6 0
3 years ago
You have an unknownthat contains only one cation (it is oneof the twelve from this experiment).Your solution is colorless and od
algol [13]

Answer:

Your cation is Pb2+

Explanation:

This is the explanation by chemical reactions

HCl (l) ----> H+(aq)  +  Cl-(aq)

Pb2+(aq)  +  2Cl-(aq)  --->  PbCl2 (s) ↓

H2SO4 (l) ----> 2H+ (aq)  +  SO4-2(aq)

Pb2+(aq)  +  SO4-2(aq) ---> PbSO4 (s) ↓

NaOH (l) ---> Na+(aq) + OH-(aq)

Pb2+(aq)  +  2OH-(aq) ---> Pb(OH)2 (s) ↓

If the reaction takes place in a strong alkaline medium, lead hydroxide dissolves in excess of base

5 0
3 years ago
How many atoms are in 87.1 g of nickel?
devlian [24]
The exact answer is 511.219514
4 0
3 years ago
lava is a hot liquid rock. when lava flows over solid ground beneath it increases in temperature. what happens to the molecules
MatroZZZ [7]

Answer:

Lava is hot liquid rock. When lava flows over solid ground, the solid ground beneath it increases in temperature. What happens to the molecules in the solid ground when the temperature is increasing? The energy of the molecules in the ground decreases.

7 0
3 years ago
a spherical sample has a mass of 2.813g. it has a diameter of 8.0mm. what is the sphere made of (determined by its density as g/
blondinia [14]
To determine the density, we use the following formula:

density= \frac{mass}{volume}

mass= 2.813 grams
volume= ?

we need to first calculate the volume before we can solve for the density. since the question states that the sample has a spherical shape, we can use the volume formula of spheres to find it.

Sphere_{volume}= \frac{4}{3} \pi r^{3}

radius (r)= \frac{diameter}{2}= \frac{8.0 mm}{2} = 4.0 mm

let's plug in the values

V= \frac{4}{3} \pi 4^{3} = 268 mm^3

we need to change the mm^3 to cm^3 using the following conversion

1 cm= 10 mm
268 mm^3 (\frac{1 cm}{10 mm} )^3 = 0.268 cm^3

now we can find the density. 

density= 2.813 grams/ 0.268 cm= 10.5 g/cm3

5 0
3 years ago
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