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3 years ago

8

What is the strongest intermolecular force between an NaCl unit and an H2O molecule together in a solution? A. Covalent bonding

B. dipole-dipole force C. Hydrogen bonding D. Ion-dipole force

1 answer:

pochemuha3 years ago

4 0

Answer:

C

Explanation:

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The temperature of a sample of gas in a steel

Snezhnost [94]

Answer:

$P_2=51.7kPa$

Explanation:

Hello,

In this case, we apply the Gay-Lussac's law which allows us to understand the pressure-temperature behavior via a directly proportional relationship:

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$

Thus, since we are asked to compute the final pressure we solve for it in the previous formula, considering the temperature in absolute Kelvin units:

$P_2=\frac{P_1T_2}{T_1}=\frac{30.0kPa*(25.0+273)K}{(-100.0+273)K} \\\\P_2=51.7kPa$

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3 years ago

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Which of the following functions occurs in the part of the digestive system indicated by the arrow?Secretion of buffers and dige

Natalija [7]

I would most likely go with the second one

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4 years ago

How many calories are required to convert 17 g of ice at 0.0Â°C to liquid water at 32.0Â°C? The heat of fusion of water is 80. c

Mazyrski [523]

Answer : The heat required is, 1904 calories.

Explanation :

The process involved in this problem are :

$(1):H_2O(s)(0^oC)\rightarrow H_2O(l)(0^oC)\\\\(2):H_2O(l)(0^oC)\rightarrow H_2O(l)(32.0^oC)$

The expression used will be:

$\Delta H=m\times \Delta H_{fusion}+[m\times c_{p,l}\times (T_{final}-T_{initial})]$

where,

m = mass of ice = 17 g

$c_{p,l}$ = specific heat of liquid water = $1cal/g^oC$

$\Delta H_{fusion}$ = enthalpy change for fusion = $80.0cal/g$

Now put all the given values in the above expression, we get:

$\Delta H=17g\times 80.0cal/g+[17g\times 1cal/g^oC\times (32.0-0)^oC]$

$\Delta H=1904cal$

Therefore, the heat required is, 1904 calories.

3 0

4 years ago

Number 10 please and fast answer

iogann1982 [59]

Answer: Water is made out of 3 atoms, 2 hydrogens and 1 oxygen.

Therefor, there answer will be A.

Hope this helps! :D

-TanqR

(Please give me brainliest)

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3 years ago

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An object has a density that is greater than the density of water. How could you make it float? Explain by giving a real-life ex

vladimir1956 [14]

Answer:

Put it on a ship or an aerogel

Explanation:

You can use an aerogel, a synthetic porous ultralight material. The aerogel can support a mass many times greater than their own.

Even simpler, you can put the object on board a ship. The ship has a smaller density than water, making it float in water.

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3 years ago