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stira [4]
3 years ago
12

A student measures out 5 mL of calcium chloride solution into a small container and 5 mL of sodium carbonate solution in another

small container. The total mass of both chemicals and the containers they are in is 15.5 g. When the student combined the two clear liquids, a gooey, cloudy precipitate formed. What would the total mass of the products and the two containers be after this reaction took place?
Chemistry
2 answers:
sergij07 [2.7K]3 years ago
6 0

Answer:

15.5

Explanation:

in a chemical reaction, mass is conserved

so mass after reaction = mass before reaction = 15.5 g

qwelly [4]3 years ago
3 0

Answer:

15.5g

Explanation:

"The total mass of both chemicals and the containers they are in is 15.5 g." After a chemical reaction, by conservation of mass, the total mass of the products and the two containers after reaction is the same at 15.5g.

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What is an aromatic compound​
SIZIF [17.4K]

Answer:

Aromatic compound, any of a large class of unsaturated chemical compounds characterized by one or more planar rings of atoms joined by covalent bonds of two different kinds. ... Aromaticity results from particular bonding arrangements that cause certain π (pi) electrons within a molecule to be strongly held.

Explanation:

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5 0
3 years ago
Consider the chemical system co + cl2 cocl2; k = 4.6 ? 109 l/mol. 2. how do the equilibrium concentrations of the reactants comp
ikadub [295]
<span>they are much bigger because </span><span>equilibrium constant shows ratio of  </span><span>concentrations of the reactants to the equilibrium concentration of the product.</span>
3 0
3 years ago
If the solvent-solute interactions in a mixture are the solvent-solvent interactions and the solute-solute interactions, a homog
andre [41]

Answer:

                 a)  If the solvent-solute interactions in a mixture are <u>stronger than</u> the solvent-solvent interactions and the solute-solute interactions, a homogeneous solution forms.

                 b) If the solvent-solute interactions in a mixture are <u>weaker than</u> the solvent-solvent interactions and the solute-solute interactions, the formation of a homogeneous solution is uncertain.

Explanation:

                     The solubility of solute in given solvent mainly depends upon the intermolecular interactions between the solvent and the solute. If the solute is surrounded and solvated by the solvent then the solute will dissolve in that solvent. Therefore, in order to dissolve the solute must form stronger interactions with the solvent as compared to the solute solute interactions or solvent solvent interactions.

Example:

              When NaCl is added to water the partial negative oxygen of water is attracted to Na⁺ of NaCl and the partial positive hydrogen of water is attracted to Cl⁻ of NaCl. These new interactions between the NaCl ions and water are stronger than the interactions between water molecules and NaCl molecules themselves hence, results in solubility of NaCl in water.

               On the other hand, if NaCl is added to Hexane (C₆H₁₄) it fails to make strong interactions with the solvent molecules resulting in insolubility of NaCl in hexane.

7 0
3 years ago
The graphs show temperature and precipitation information for an area.
alexgriva [62]

Answer:

Desert

Hope I helped

6 0
3 years ago
Lesson Four: Significant Figures in Calculations
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Answer:

a) significant figures   b) decimal places

Multiplying/dividing ex: 1.33 * 4.4932 = 5.98 because the first component only has three sig figs while the second has five.

Adding/subtracting ex: 12.13 + 53.5763 = 65.71 we ignore the whole numbers and focus only on the decimal places. The first component only has two while the second has four. Hope this helps!

5 0
3 years ago
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