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Rasek [7]
3 years ago
15

True or false? To develop good alternatives, one should brainstorm ideas and consider different perspectives

Physics
1 answer:
Contact [7]3 years ago
7 0
From my experience, I would say it is true.
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Arrange the following substances in order of decreasing magnitude of lattice energy.
kolbaska11 [484]
The formula is F = ( q1 * q2 ) / r ^ 2 
<span>where: q is the individual charges of each ion </span>
<span>r is the distance between the nuclei </span>
<span>The formula is not important but to explain the relationship between the atoms in the compounds and their lattice energy. </span>

<span>From the formula we can first conclude that compounds of ions with greater charges will have a greater lattice energy. This is a direct relationship. </span>
<span>For example, the compounds BaO and SrO, whose ions' charges are ( + 2 ) and ( - 2 ) respectively for each, will have greater lattice energies that the compounds NaF and KCl, whose ions' charges are ( + 1 ) and ( - 1 ) respectively for each. </span>

<span>So Far: ( BaO and SrO ) > ( NaF and KCl ) </span>

<span>The second part required you find the relative distance between the atoms of the compounds. Really, the lattice energy is stronger with smaller atoms, an indirect relationship. </span>
<span>For example, in NaF the ions are smaller than the ions in KCl so it has a greater lattice energy. Because Sr is smaller than Ba, SrO has a greater lattice energy than BaO. </span>

<span>Therefore: </span>
<span>Answer: SrO > BaO > NaF > KCl </span>
5 0
3 years ago
Read 2 more answers
Which statement represents how light travels? Light given off from a moving source will travel faster in a vacuum. Light given o
Debora [2.8K]

Answer:

the first one

Explanation:

4 0
2 years ago
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g A 2.3 kg block is attached to the spring, and it is released from rest 0.7 m from the spring's equilibrium position. Neglectin
DedPeter [7]

Answer:

3.71 m/s

Explanation:

From the law of conservation of linear momentum, since we are neglecting minor energy losses due to friction then we can express it as mgh=0.5mv^{2} since all the potential energy is transformed to kinetic energy

Making v the subject of the formula then v=\sqrt {2gh} and here m is the mass of the block, g is acceleration due to gravity, h is the height. Substituting 0.7 m for h and 9.81 for g then we obtain that v=\sqrt {2\times 9.81\times 0.7}=3.705941176 m/s\approx 3.71 m/s

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3 years ago
Glands in the body send out chemical messages through hormones to control growth, development, and metabolism. The system that h
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Answer:

The nervous and endocrine systems exert the ultimate control over homeostasis because they coordinate the functions of the body's systems.

Explanation:

4 0
2 years ago
- The Grayprational Force<br>with which the earth aracts<br>а,​
Fudgin [204]

Answer:

gravitational?

Explanation:

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