Explanation

Homogeneous liquid equilibria can be affected by temperature changes,

It as the temperature can influence the equilibrium position.

Pressure changes may also affect equilibria but to a lesser extent than temperature changes.

Explanation

Polarization is a property of transverse waves, where the direction of vibration can be oriented in various directions.

Ultrasonic waves are longitudinal waves and cannot be polarized.

Explanation

All the listed fields (gravitational, electric, and magnetic) are conservative fields.

In conservative fields, the work done moving a particle between two points is independent of the path taken.

Explanation

Normative ethics is a branch of philosophy that studies how people should act morally.

It's concerned with what is good, what actions are right or wrong, and what people ought to do.

Explanation

The Born-Haber cycle is used to calculate the lattice energy of an ionic compound,

which is the energy required to form the ionic lattice from its gaseous ions.

Explanation

The molar mass of CaCO₃ is approximately 100 g/mol.

The molar mass of calcium (Ca) in CaCO₃ is about 40 g/mol.

The proportion of calcium in CaCO₃ is  40/ 100 = 0.4

Therefore, in 0.1 g of CaCO₃, the amount of calcium is  0.1×0.4=0.04 g.

Explanation

Each molecule of water (H₂O) has 10 electrons (2 from hydrogen and 8 from oxygen).

Therefore, 1 mole of water has 10 moles of electrons.

So, 10 moles of water have 10 x 10 = 100 moles of electrons.

Explanation

A crystal can only have one center of symmetry. 

A center of symmetry is a point within a crystal where, if a line is drawn through that point and extended an equal distance on the other side, it intersects an identical point on the crystal.

Since this is a single, specific point within the crystal, there can only be one center of symmetry per crystal. 

Explanation

A heat engine operating in reverse is called a heat pump or a refrigerator.

Essentially, these devices move heat from a cooler area to a warmer area, requiring external work to do so, which is the opposite of how a heat engine functions. 

Explanation

In a reversible reaction, a catalyst reduces the time to reach equilibrium by increasing the rate of both forward and reverse reactions.