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vampirchik [111]

3 years ago

13

Explain why this statement is false: “Because there is no change in composition during a physical change, the appearance of the

substance will not change”

1 answer:

NARA [144]3 years ago

6 0

It is false is the awnser

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List 4 things that can affect the rate of reaction during a chemical reaction.

laiz [17]

Answer:

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

Explanation:

6 0

3 years ago

How many milligrams of sodium sulfide are needed to completely react with 25.00 ml of a 0.0100 m aqueous solution of cadmium nit

NARA [144]

Na₂S(aq) + Cd(NO₃)₂(aq) = CdS(s) + 2NaNO₃(aq)

v=25.00 mL
c=0.0100 mmol/mL
M(Na₂S)=78.046 mg/mmol

n(Na₂S)=n{Cd(NO₃)₂}=cv

m(Na₂S)=M(Na₂S)n(Na₂S)=M(Na₂S)cv

m(Na₂S)=78.046*0.0100*25.00≈19.5 mg

5 0

4 years ago

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Glycerol boils at a high temperature than water. What does this indicate about the attractive forces of glycerol?

forsale [732]

Glycerol attractive forces are great than water. The harder to break, the more energy is needed.

5 0

3 years ago

Mid- ocean ridges normally form where tectonic plates are A. converging B. diverging. C. Stationary. D. sliding past each other

Tasya [4]

its B i know its is denfkrnkvjf, njbc

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4 years ago

What type of reaction is represented by the following equation?

professor190 [17]

Answer: Double replacement reaction

Explanation:

7 0

2 years ago