3 years ago

(PLEASE HELP, LAST QUESTION I NEED! ) Describe to me the purpose of stoichiometry calculations.

1 answer:

6 0

Explanation:

Stoichiometry measures these quantitative relationships, and is used to determine the amount of products and reactants that are produced or needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry.

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If the frequency of an FM wave is 8.85 × 107 hertz, what is the period of the FM wave?

Keith_Richards [23]

NAMASTE

HERE IS YOUR ANSWER:

$\boxed{Frequecy = \frac{1}{time \: period} }$

Frequency (given) = 8.85× ${10}^{7}$ hz

time period =
$\frac{1}{8.85 \times {10}^{7}}$

= 0.112 × ${10}^{-7}$

= 1.12 × ${10}^{-8}$

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3 years ago

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Which celestial object is found in the Kuiper Belt?

Alexus [3.1K]

Beyond the planet Neptune is found a region filled with icy bodies. This region is known as the Kuiper Belt. This holds trillions of objects which is said to be remnants of the early solar system. The region contains comets and dwarf planets.

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A block of aluminum occupies a volume of 15.0 cm and weighs 40.5 g. What is its density?

mafiozo [28]

Answer:

2.7 g/cm^3

Explanation:

D = m/V

D = 40.5 g / 15 cm^3

D = 2.7 g/cm^3

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3 years ago