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gtnhenbr [62]
3 years ago
9

Why is water And effective solvent for many different types of compounds?

Physics
1 answer:
Artyom0805 [142]3 years ago
6 0

B. it contains polar covalent bonds

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A copper atom has an atomic number of 29 and an atomic mass of 64. What
Elina [12.6K]

Explanation:

Answer is B.

B. It has a central nucleus composed of 29 protons and 35 neutrons,surrounded by an electron cloud containing 29 electrons.

I hope it's helpful!

3 0
2 years ago
If this energy were used to vaporize water at 100.0 ∘C, how much water (in liters) could be vaporized? The enthalpy of vaporizat
Zanzabum

Answer:

0.429 L of water

Explanation:

First to all, you are not putting the value of the energy given to vaporize water, so, to explain better this problem, I will assume a value of energy that I took in a similar exercise before, which is 970 kJ.

Now, assuming that the water density is 1 g/mL, this is the same as saying that 1 g of water = 1 mL of water

If this is true, then, we can assume that 1 kg of water = 1 L of water.

Knowing this, we have to use the expression to get energy which is:

Q = m * ΔH

Solving for m:

m = Q / ΔH

Now "m" is the mass, but in this case, the mass of water is the same as the volume, so it's not neccesary to do a unit conversion.

Before we begin with the calculation, we need to put the enthalpy of vaporization in the correct units, which would be in grams. To do that, we need the molar mass of water:

MM = 18 g/mol

The enthalpy in mass:

ΔH = 40.7 kJ/mol / 18 g/mol = 2.261 kJ/g

Finally, solving for m:

m = 970 / 2.261 = 429 g

Converting this into volume:

429 g = 429 mL

429 / 1000 = 0.429 L of water

3 0
3 years ago
List what sources of uncertainty go into calculating the wavelength of the laser (no explanation necessary here). (b) Accurately
laiz [17]

Answer:

thanks for da 5points hoi

Explanation: thanks dawg

7 0
3 years ago
What is the atomic mass of oxygen?​
lianna [129]

Answer:

atomic \: mass \: of \: oxygen = 15.99aproximtly = 16 \\ thank \: you

8 0
2 years ago
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A mass accelerates uniformly when the resultant force on it is?
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. . . . . not zero .


Note:  "... unbalanced" would be a terrible answer.
5 0
3 years ago
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