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solong [7]
2 years ago
6

Which represents a linear graph?

Chemistry
2 answers:
Tpy6a [65]2 years ago
7 0
Your answer is D. Hope this helps.
Linear graphs have representation as a STRAIGHT LINES.
vampirchik [111]2 years ago
5 0
D represents a linear graph. Linear graphs are represented in straight lines.
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Explain what the name scandium(III) oxide means
Archy [21]
<span>The roman numeral 3 represents the oxidation of the metal, scandium. </span>
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3 years ago
1. Calculate the attractive bonding force for NaF and for MgO when the ions just touch. Based on the attractive bonding force, w
Andreas93 [3]

Answer:

The attractive force is negative and MgO has a higher melting point

Explanation:

From Couloumb's law:

Energy of interaction, E = k \frac{q1q2}{r}

where q1 and q2 are the charges of the ions, k is Coulomb's constant and r is the distance between both ions, i.e the atomic radii of the ions.

If you look at Coulomb's law, you note that in the force is negative (because q1 is negative while q2 is positive).

In addition to that, the compounds MgO and NaF have similar combined ionic radii, then we can determine the melting point trend from the amount of energy gotten

The melting point of ionic compounds is determined by 1. charge on the ions 2. size of ions. while NaF has smaller charges (+1 and -1), MgO (+2 and -2) has larger charges and greater combined atomic radii. This implies that the compound with greater force would have a higher melting point.

Hence the compound MgO would have a higher melting point than NaF.

5 0
3 years ago
If y = 15 when x = 60, find y when x = 45.
Delvig [45]
Y=15 x=60
•1/3 •1/3
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2 years ago
When ammonium chloride is added to water and stirred, it dissolves spontaneously and the resulting solution feels cold. Without
d1i1m1o1n [39]
When ammonium chloride NH4Cl is added to water and stirred, it dissolves spontaneously (this is the basis for ΔG) for and the resulting solution feels cold (endothermic, the basis for ΔH). Without doing any calculations, we can easily deduce the signs of ΔG, ΔH, and ΔS for this process based on the observations.

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2 years ago
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