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Leokris [45]
2 years ago
12

Which is stronger - the attractive forces between water molecules and chromium and chloride ions, or the combined ionic bond str

ength of crcl2 and intermolecular forces between water molecules? explain?
Chemistry
2 answers:
zimovet [89]2 years ago
6 0
<span>The combined ionic bond strength is stronger because the ionic bonds are magnitudes stronger than any intermolecular forces.</span>
Tju [1.3M]2 years ago
3 0

Answer is: the combined ionic bond strength of CrCl₂ and intermolecular forces between water molecules.

When chromium chloride (CrCl₂) is dissolved in water, the temperature of the water increases, heat of the solution is endothermic.

Dissociation of chromium chloride in water: CrCl₂(aq) → Cr²⁺(aq) + 2Cl⁻(aq).

Energy (the lattice energy) is required to pull apart the oppositely charged ions in chromium chloride.

The heat of hydration is liberated energy when the separated ions (in this example chromium cations and chlorine anions) attract polar water molecules.

Because the lattice energy is higher than the heat of the hydration (endothermic reaction), we can conclude that bonds between ions are strong (the electrostatic attraction between oppositely charged ions).

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A sample of nitrogen gas is stored in a 489.6 mL flask at 108 kPa and 10.0°C. The gas is transferred to a 750.0 mL flask at 28.7
Wewaii [24]

Answer:

P2= 125.26 Kpa

Explanation:

V1= 489.6 ml=0.4896L

V2= 750 ml= 0.750L

V1= 180 KPa= 180000 Pa

P2= ?

T1= 10 = 10 + 273.15 = 283.15K

T2= 28.7+273.15= 301.85K

180000Pa* 0.4896L/ 283.15K * 301.85K/0.75L

P2= 12526.28553

P2= 125.26 KPa

5 0
3 years ago
What part of the atom determines if it will combine or break apart from other substances
enyata [817]

The combination of an atom with other atom is bonding. Or break apart from other substance is breaking of interaction.

The bonding or interaction (inter-atomic) are due orbitals and electrons present in these orbitals

The atom consists of

a) a central nucleus which has proton and neutrons: they do not take part in chemical reactions

b) the part other than nucleus which has shells, sub shells and orbitals

These orbitals have electrons.

So the outer part of nucleus takes part in any combination with other substance

7 0
3 years ago
Which two phrases describe the movement of thermal energy due to
Varvara68 [4.7K]

Answer:

D. From the equator to cooler parts of Earth

Explanation:

Thermal energy is always transferred from an area with a higher temperature to an area with a lower temperature. Moving particles transfer thermal energy through a fluid by forming convection currents.

3 0
2 years ago
Milk has a density of 1.04 g/ml. If you have a volume of 510 ml, what is the mass in grams
Law Incorporation [45]

Density is defined as the ratio of mass and volume. The formula of density is:

density = \frac{mass}{volume}     -(1)

Density of milk = 1.04 g/mL   (given)

Volume of milk = 510 mL      (given)

Substituting the values in formula (1):

1.04 g/mL = \frac{mass}{510 mL}

mass= 1.04 g/mL \times 510 mL

mass = 530.4 g

Hence, the mass of the milk is 530.4 g.

4 0
3 years ago
A unit of measurement that people agree to use is called a
likoan [24]
SI Unit
I'm not 100% sure but I think that's right. Hope I helped you in any way.
8 0
3 years ago
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