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4 years ago

Which best describes thermal energy?

Chemistry

1 answer:

Sav [38]4 years ago

5 0

Answer:

It is the sum of internal energies of two or more substances

Explanation:

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Using bond lengths in Table 9.2 (p. 371) and assuming ideal geometry, calculate each of the following distances:

Fed [463]

158 pm is the distance Between equatorial Fluorine atoms in PF₅(Phosphorus pentafluoride).

<h3>What is Fluorine?</h3>

The chemical element fluorine has an atomic number of 9 and the symbol F. The lightest halogen, it is an extremely poisonous, pale yellow diatomic gas under normal conditions. It is exceedingly reactive and, as the most electronegative element, reacts with all other elements with the exception of argon, neon, and helium.

Fluorine is the 24th most abundant element overall and the 13th most abundant on Earth. In order to decrease the melting temperatures of metal ores for smelting, fluorite, the main mineral source of fluorine, was added. The Latin verb fluo, which means "flow," gave the mineral its name. Fluorite was first described in 1529.

Learn more about fluorine

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7 0

2 years ago

A chemist makes a solution of NaOH for use in an experiment. She dissolves 0.00500 mol NaOH in 1.00 L H2O. The NaOH completely d

anygoal [31]

Answer:

pH = 11.7

Explanation:

Given:

[OH-] = 0.00500 M

To determine:

pH of the solution

Explanation:

pH refers to the H+ ion concentration in a given solution whereas pOH indicates the OH- ion concentration.

pH and pOH are related by the following equation:

$pH + pOH = 14 ------(1)$

Here:

$pH = -log[H+]\\\\pOH = -log[OH-]$

When OH- = 0.00500 M

$pOH = -log(0.00500) = 2.30\\$

Based on equation(1):

$pH = 14 - pOH = 14 -2.30=11.7$

6 0

3 years ago

In compounds,has an oxidation number 1-

alex41 [277]

Fluorine in compounds is always assigned an oxidation number of -1

5 0

4 years ago

In an investigation that uses the scientists method, which step immediately follows asking a question

Otrada [13]

The answer to your question is:

~Creating a hypothesis.

I hope this helps!!!

5 0

3 years ago

Which compound would you expect to be least soluble in water? Explain.

Sophie [7]

Answer: a.CCl4 aka carbon tetrachloride

Explanation:

ionic compounds and polar molecules can be dissolved in water which is a polar solvent.

choice d (KF) is a salt (an ionic compound) and can be dissolved in water /(K+ and F- ions would be formed in water).

choice c (NH3 or ammonia) is a very polar molecule and thus can be dissolved in water(Hydrogen bonding).

choice b (CH3Cl) is slightly polar because the atoms surrounding the central carbon atom are different(3 H atoms and 1 chlorine atom) and can be dissolved in water(Dipole-dipole interaction).

choice a is nonpolar and cannot be dissolved in water.

4 0

3 years ago