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jekas [21]
3 years ago
6

The heat energy required to change a unit mass of a solid into a liquid at constant temperature is called

Chemistry
2 answers:
Mekhanik [1.2K]3 years ago
7 0
The heat energy required to change a unit mass of a solid into a liquid at constant temperature is called thermal equilibrium. 

'Equilibrium' means balance, and thermal is used to define temperature. 
Nonamiya [84]3 years ago
6 0

Answer: Heat Of Fusion

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7. Give the electron configurations for Sc3+
PolarNik [594]
Scandium forms one ion, Sc3+, with an electron configuration of 1s2 2s2 2p6 3s2 3p6
4 0
4 years ago
Grape soda is a solution of the solutes carbon dioxide (CO2), sugar (C12H22°11), and grape flavoring (CHNO2) dissolved in
ser-zykov [4K]

Answer:

The ameliorated retort, pertaining to the presented and contemporaneous interrogate is acknowledged as B.  

Explanation:

To convey such rhetoric, the following is obligated for comprehension:

- To commence, according to Wikipedia, a "Pure Substance" is defined as: "A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds."

- In addition, invariantly according to Wikipedia, a "Chemical Mixture" is defined as: "In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids."

Hence, veracious retorts are subject to commence.

Given peculiar substances,

H20, an optical isomer is in recognition as a pure substance.

Likewise, CO2, an enantiomer is in the congruence of a pure substance.

Hence, methyl anthranilate acquiring a chemical formula of C8H9NO2, acknowledged as grape flavoring, is a mixture.

Invariantly, the diasteromer epimer, procuring a chemical formula configuration of C12H22O11, sucrose, is acknowledged as a mixture.

Hence, ideologically, the retort in the congruence of veracious philosophy is B. "The pure substances are carbon dioxide and water; mixtures are sugar and grape flavoring."

I hope this helps!

8 0
3 years ago
When aqueous solutions of calcium bromide and potassium carbonate are combined, solid calcium carbonate and a solution of potass
ladessa [460]

K_2CO_3 + CaBr_2 → KBr + CaCO_3  is the net ionic equation for this reaction.

<h3>What is an ionic equation?</h3>

An ionic equation is a synthetic equation where electrolytes are composed as separated particles.

K_2CO_3 + CaBr_2 → KBr + CaCO_3 is the net ionic equation for this reaction.

A balanced ionic equation. shows the reacting ions. in a chemical reaction. These equations can be used to represent what happens in precipitation reactions.

Learn more about ionic equation here:

brainly.com/question/16225321

#SPJ1

5 0
2 years ago
How many molecules are in 643.21 grams of Mg3(PO4)2?
Eva8 [605]

Answer:

643.21g  1 mol  6.022^23

262.87 g   1 mol

= 1.4735E24     [Mg3(PO4)2]

4 0
3 years ago
How much liquid is needed to prepare 629.1mL of a solution that has a new concentration of 11.2M if the stock solution is 26.1M
slega [8]

Answer:

270. mL

General Formulas and Concepts:

<u>Acid-Base Titrations</u>

Dilution: M₁V₁ = M₂V₂

  • M₁ is stock molarity
  • V₁ is stock volume
  • M₂ is new molarity
  • V₂ is new volume

Explanation:

<u>Step 1: Define</u>

<em>Identify</em>

[Given] V₂ = 629.1 mL

[Given] M₂ = 11.2 M

[Given] M₁ = 26.1 M

[Solve] V₁

<u>Step 2: Find Stock Volume</u>

  1. Substitute in variables [Dilution]:                                                                     (26.1 M)V₁ = (11.2 M)(629.1 mL)
  2. Multiply:                                                                                                             (26.1 M)V₁ = 7045.92 M · mL
  3. Isolate V₁ [Cancel out units]:                                                                            V₁ = 269.959 mL

<u>Step 3: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs as our lowest.</em>

269.959 mL ≈ 270. mL

5 0
3 years ago
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