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Rudiy27
3 years ago
5

Which of the following are the starting substances in photosynthesis?

Chemistry
2 answers:
djverab [1.8K]3 years ago
6 0

A. water and carbon dioxide


Misha Larkins [42]3 years ago
3 0

A: water and carbon dioxide.

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A sample of gas has a volume of 215 cm3 at 23.5 degrees Celsius and 84.6kPa what volume will the gas occupy at stp
miss Akunina [59]

The volume of the gas that occupy at STP is 165. 28 cm^3

calculation

by use of combined gas law that is P1V1/T1=P2V2/T2, where

P1=84.6 kpa

T1=23.5 +273=296.5 K

V1=215 cm^3

At STP T= 273 K and P= 101.325 Kpa

therefore p2 = 101.325 Kpa and T2 = 272 K V2=?

by making V2 the subject of the formula V2 =T2P1V1/P2T1

V2 = 273 K x 84.6 Kpa x 215 cm^3/ 101,.325 Kpa x296.5 K =165.28 cm^3

5 0
3 years ago
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a. because it is an element

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2 years ago
Why does mass of popcorn stay the same after popping it
Varvara68 [4.7K]

Answer:

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A chemical formula represents:
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How do compounds differ from their component elements? A. Compounds have different numbers of neutrons than their component elem
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The correct answer is C. Compounds have different properties than their component elements. When compounds are formed, they undergo change resulting to changes in the properties they exhibit. It will have its new set of properties different from the elements.
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