a manufacturer claims its cleanser work twice as fast as any other . could testt be performed to support the claim?

Chemistry

1 answer:

grin007 [14]3 years ago

4 0

Yes, other cleansers can be tested and compared to the original manufacturers cleanser to see which works faster.

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Which statement does NOT apply to Alkenes?

nikdorinn [45]

Answer:

They are more stable than alkanes

Explanation:

Alkenes are a type of unsaturated hydrocarbons which means they have a double bond in their structure, or lack maximum number of hydrogen atoms on each carbon.
Alkenes have a general formula of CnH2n. They are called unsaturated hydrocarbons since they have a double bond. They are therefore less stable compared to alkanes and also are readily reactive.

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3 years ago

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An unknown solution has a pH of 7.2. Which of these chemicals is likely to cause the greatest decrease in the pH of the solution

prohojiy [21]

Answer:

HNO₃.

Explanation:

It is known that acids decrease the pH of the solution, while bases increase the pH of the solution.

So, HF and HNO₃ decrease the pH of the solution as they produce H⁺ in the solution.

While, KOH and NH₃ increase the pH of the solution as they produce OH⁻ in the solution.

HNO₃ will decrease the pH of the solution greater than HF.

Because HNO₃ is strong acid that decomposes completely to produce H⁺ more than the same concentration of HF that is a weak acid which does not decomposed completely to produce H⁺.

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3 years ago

What is a chemical reaction. in your own words but be more detailed about what you say.

harkovskaia [24]

Answer:

A chemical reaction is the change in chemical form rather than physical due to an outside force. This can come from something as simple as a change in temerature to as large as a specific element or compound.

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2 years ago

Which of the following can undergo metamorphosis?

Vaselesa [24]

Answer: None of the above

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Sulfur and oxygen react to produce sulfur trioxide. In a particular experiment, 7.9 grams of SO3 are produced by the reaction of

galina1969 [7]

Answer:

$\%\, yield\, \, SO_3=82.29$

Explanation:

First write the balance eqation of chemical reaction:

$2S(s) +3O_2(g) \rightarrow 2SO_3(g)$

Remember writing any chemical reaction from its elemetal form then write the elements in their natural form i.e. how that element exists in the nature here sulphur exists in solid monoatomic form in the nature and oxygen in gaseous diatomic form.

mass of oxygen given=5gram

mole of oxygen $=5/32mol=0.16mol$