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Tems11 [23]
3 years ago
10

Which physical property refers to the temperature at which substance in a solid state transforms to a liquid state?

Chemistry
2 answers:
professor190 [17]3 years ago
6 0
Melting, in which heat of fusion is needed.
tester [92]3 years ago
5 0

Answer:

Meltting point

Explanation:

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Which of the following is an example of a contact force?
Virty [35]
C. A person pushing a box across the floor
7 0
3 years ago
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Enter the Ksp expression for the solid AB2 in terms of the molar solubility x. AB2 has a molar solubility of 3.72×10−4 M. What i
AlekseyPX

Answer:

2.06 × 10⁻¹⁰

Explanation:

Let's consider the solution of a generic compound AB₂.

AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

We can relate the molar solubility (S) with the solubility product constant (Kps) using an ICE chart.

      AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

I                      0              0

C                    +S            +2S

E                      S              2S

The solubility product constant is:

Kps = [A²⁺] × [B⁻]² = S × (2S)² = 4 × S³ = 4 × (3.72 × 10⁻⁴)³ = 2.06 × 10⁻¹⁰

5 0
3 years ago
How many electrons are present in an uncharged atom with its 1s, 2s, 2p, 3s, 3p and 4s subshells filled and with five electrons
marshall27 [118]

25

Explanation

The orbital quantum number of an atomic subshell determines the maximum number of electrons it can contain. For example:

  • Each s orbital (l = 0) holds up to 4 \; l + 2 = 2 electrons
  • Each p orbital (l = 1) holds up to 4 \; l + 2 = 6 electrons
  • Each d orbital (l = 2) holds up to 4 \; l + 2 = 10 electrons

The atom in question here contains four fully-occupied s orbitals, two fully-occupied p orbitals along with 5 electrons in a partially-occupied d orbital. It thus contains

4 \times 2 + 2 \times 6 + 5 = 25 \; \text{electrons}


5 0
3 years ago
Match the effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been establishe
mestny [16]

The effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been established in this system (N.C. = no change) by adding a catalyst.

2SO2(g) + O2(g)  2SO3(g) + 46.8 kcal

So that even though there is an addition of catalyst, no change in reactants or products has occurred because catalyst only provides a faster pathway for the reaction to occur.

3 0
4 years ago
Read 2 more answers
Gamma-ray bursters emit pulses of gamma rays with high energies. The frequency of the most energetic pulses has been measured at
Novosadov [1.4K]

The wavelength of these gamma rays will be  1x110^{-13} m.

How do you define wavelength?

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometres, and other units since it is a distance measurement.

The relationship between the wave's wavelength, frequency, and speed is given as

wavelength = speed of light ÷ frequency

wavelength = \frac{3 X10^8}{3.0 X10^{21}}

wavelength = 1x10^{-13} m

Hence the wavelength of these gamma rays will be 1 X 10^{-13}m.

To learn more about the wavelength refer to the link;

brainly.com/question/7143261

#SPJ1

7 0
2 years ago
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