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3 years ago

You measure the mass of a model car to be 230 grams.The actual mass is 218 grams .what is your percent error

Chemistry

1 answer:

LenKa [72]3 years ago

8 0

Your percent is 5.50458716

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What is the sum of the coefficients for the following unbalanced equation?

Firlakuza [10]

NAMASTE :)

SKELETON REACTION:

➡_KClO3(s) -> _KCl(s) + _O2(g)

BALANCED REACTION

➡2KClO3(s) -> 2KCl(s) + 3O2(g)

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3 years ago

Connie was making sodium chloride by adding an acid to an alkali. She followed the progress of the reaction with a pH sensor. At

Misha Larkins [42]

⇒Answer:

When the pH sensor hits pH=7.

⇒Explanation:

Because pH=7 is the indicator that the acid and alkali have been neutralized.

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2 years ago

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? A. Magnesium has a 2- oxidation n

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B. is the correct answer of your question

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3 years ago

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Water _____.

Sergio039 [100]

Answer: is neither an acid nor a base

Explanation: Water is a universal solvent which means it can dissolve most of the substances in it.

Water has high thermal heat capacity , which means large heat is required to heat the water.

Water is not always pure as it gets contaminated by various pollutants present in the atmosphere such as gases, bacteria and suspended matter.

Water is an amphoteric substance which can act as both acid and base, thus can donate and acept [texH^+[/tex] ions.Thus it is neither an acid nor a base.

$HCl+H_2O\rightarrow H_3O^++Cl^-$

Here water is accepting a proton, thus it acts as base.

$NH_3+H_2O\rightarrow NH_4^++OH^-$

Here water is donating a proton, thus it acts as acid.

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3 years ago

What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimet

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Answer:

Hi. Increased evaporation would be the greatest difference.

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Have you ever had a drink in a mug with a lid? When you would remove the lid, all of the liquid on the lid is the liquid that would evaporate if there was no lid.

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2 years ago

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