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Eddi Din [679]
3 years ago
8

Water cannot exist in this state. A. liquid B. gas C. solid D. none of the above

Chemistry
2 answers:
gregori [183]3 years ago
8 0
The best and most correct answer among the choices provided by your question is the fourth choice or letter D. Water can exist in all phases of matter. 

In thermodynamics, the triple point<span> of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. </span>Water exists in three distinct phases at something called the triple point.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
Anarel [89]3 years ago
6 0
The answer is d) none of the above

 water in liquid is well water.
water in gas in called evaporation.
water is able to exist as a solid (ice)
good luck!
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7 0
4 years ago
"An aqueous CaCl2 solution has a vapor pressure of 83.1mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92
Lynna [10]

Answer : The the concentration of CaCl_2 in mass percent is, 41.18 %

Solution : Given,

Molar mass of water = 18 g/mole

Molar mass of CaCl_2 = 110.98 g/mole

First we have to calculate the mole fraction of solute.

According to the relative lowering of vapor pressure, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component of the solution multiplied by the vapor pressure of that component in the pure state.

\fac{p^o-p_s}{p^o}=X_B

where,

p^o = vapor pressure of the pure component (water) = 92.6 mmHg

p_s = vapor pressure of the solution = 83.1 mmHg

X_B = mole fraction of solute, (CaCl_2)

Now put all the given values in this formula, we get the mole fraction of solute.

\fac{92.6-83.1}{92.6}=X_B

X_B=0.102

Now we have to calculate the mole fraction of solvent (water).

As we know that,

X_A+X_B=1\\\\X_A=1-X_B\\\\X_A=1-0.102\\\\X_A=0.898

The number of moles of solute and solvent will be, 0.102 and 0.898 moles respectively.

Now we have to calculate the mass of solute, (CaCl_2) and solvent, (H_2O).

\text{Mass of }CaCl_2=\text{Moles of }CaCl_2\times \text{Molar mass of }CaCl_2

\text{Mass of }CaCl_2=(0.102mole)\times (110.98g/mole)=11.32g

\text{Mass of }H_2O=\text{Moles of }H_2O\times \text{Molar mass of }H_2O

\text{Mass of }H_2O=(0.898mole)\times (18g/mole)=16.164g

Mass of solution = Mass of solute + Mass of solvent

Mass of solution = 11.32 + 16.164 = 27.484 g

Now we have to calculate the mass percent of CaCl_2

Mass\%=\frac{\text{Mass of}CaCl_2}{\text{Mass of solution}}\times 100=\frac{11.32g}{27.484g}\times 100=41.18\%

Therefore, the the concentration of CaCl_2 in mass percent is, 41.18 %

4 0
3 years ago
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Lubov Fominskaja [6]

Answer:

1000ml/1L

Explanation:

8 0
3 years ago
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Mekhanik [1.2K]

Answer:

The answer is A

Explanation:

That is the only answer that even remotely resembles an ultrasound hope this answered your question.

7 0
3 years ago
The reaction between nitric oxide and oxygen is described by the following chemical equation: Suppose a two-step mechanism is pr
muminat

Answer:

2NO(g) + O2(g) ---> 2NO2(g)

Explanation:

The mechanism for this reaction involves two elementary reactions in which both are bimolecular as shown below;

NO(g) +O2(g) ----> NO2(g) + O(g)

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Hence overall balanced reaction equation;

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7 0
4 years ago
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