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BARSIC [14]
3 years ago
9

In a chemical change the atoms in compounds are rearranged to make new and different compounds.

Biology
1 answer:
Stels [109]3 years ago
3 0

Answer:

its true

Explanation:

A chemical change alters the composition of the original matter. Different elements or compounds are present at the end of the chemical change. The atoms in compounds are rearranged to make new and different compounds.

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The bacteria have an initial concentration of 1000 cells/cm3 . Each cell divides once every 30 minutes. Calculate how long it wi
Levart [38]

It will take <u>120 minutes</u> for the concentration to become > 15000 cells/cm³

<u>Given data:</u>

Initial concentration ( density ) = 1000 cells / cm³

Target/final concentration = > 15,000 cells /cm³

<h3 /><h3>Calculating the concentration every 30 minutes </h3><h3 />

<em>note</em><em> : Given that each cell divides every 30 minutes </em>

  • <u>After the first 30 minutes </u>

Concentration = 2000 cells / cm³

  • <u>After 60 minutes </u>

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  • <u>After 90 minutes </u>

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Therefore after 120 minutes the concentration of the cells will be greater than 15000 cells/cm³ ( i.e. 16000 cells/cm³ )

Learn more about concentration : brainly.com/question/17206790

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2 years ago
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Zigmanuir [339]

Answer:

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I would say your answer is <span><span>The Earth’s surface is responsible for a small fraction of heat radiation to space</span>
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