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kirill [66]
3 years ago
12

A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa

ter by filtration or centrifuge. What type of mixture is it?
Chemistry
1 answer:
Nataly [62]3 years ago
6 0
A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and water by any filtration or centrifuge, it is a colloid mixture. The colloid consists of large molecules & ultra microscopic particles of a substance that has been dispersed by another substance. 
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Saturated hydrocarbons contain carbon and hydrogen atoms that have ____ bond(s). \<br> 1 or 2?
Tom [10]
Saturated has only 1 c to c bond while unsaturated has 2 or 3 c to c bond
7 0
3 years ago
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What is the conjugate acid of clo3 −? 1. hclo3 2. clo3 − does not contain oh−, so it is not a base and thus cannot have a conjug
Dahasolnce [82]
Answer is: 1. HClO₃; (chloric acid).
Balance chemical reaction (dissociation):
ClO₃⁻(aq) + H₂O(l) ⇄ HClO₃(aq) + OH⁻(aq).
According to  Bronsted-Lowry theory acid are donor of protons and bases are acceptors of protons (the hydrogen cation or H⁺).
The chlorate anion (ClO₃⁻) is Bronsted base and it can accept proton and become conjugate acid HClO₃..

3 0
3 years ago
Which statement best describes the reaction pathway graph for an exothermic reaction but not an endothermic reaction? It has a h
ruslelena [56]
Answer: "The reactants are higher in energy than the products"

Explanation:

The exothermic reactions are characterized by the release of heat to the surroundings. The reactants lose heat that is delivered to the surroundings which implies that the products will be lower in energy than the reactants.

The hills that you can see in a reaction energy diagram are not related with the final change of energy. The hills are an indication of the activation energy needed to start the reaction, but they do not measure the change of energy from the products to the reactants.

The enthalpy that is a state variable that identifies the content of heat. Then the change of enthalpy for the exothermic reactions is negative, meaning that the energy of the products is lower than the energy of the reactants. 
3 0
3 years ago
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You are given sodium acetate, 1m hcl, nahco3 and na2co3. Determine which of these four you would need and then show calculations
valentina_108 [34]

solution:

the given compounds are sodium acetate, 1M HCL,NaHCO₃ and Na2CO₃

pH of the buffer solution is 4.7

the value of pKa of sodium bicarbonate is 6.37

the value of pKa of acetic acid is 4.7

calculate concentration of acetic acid by using the following forumula

pH=pKa+lag[salt]/[acid]

substitute the pH and Pka values in the formula.

4.7=4.7+log[salt]/[acid]

log[salt]/[acid]=0

thus, the concentration ratio of the salt and acid should be equal to each other.

Thus, concentration of sodium acetate is 0.05M

Concentration of sodium acetate= concentration of acid

= 0.05M

Volume of the buffer solution is 100mL

The buffer solution can be prepared as 0.05M of 50mL sodium acetate will react with 0.05M of 50mL of 0.05M of HCL.

The chemical equation for neutralization of the weak base with strong can be represented as show as

CH₃COONa+HCL-->CH₃COOH+NaCL


5 0
3 years ago
5. The reaction of magnesium oxide with hydrochloric acid carried out in a calorimeter caused the
saul85 [17]

Answer:

kek w

Explanation:

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