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Zarrin [17]
2 years ago
9

In cellular respiration, living things use sugar to produce energy. True or false

Chemistry
1 answer:
wel2 years ago
3 0
I pretty sure it true I’m not completely sure
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How many mol of sodium corresponds to 1.0 x 10^15 atoms of sodium?
andrew-mc [135]
The Avogadro number represents the number of units in one mole of a chemical substance.
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9

So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.

Hope this Helps! :)
3 0
3 years ago
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Determine the number of moles of O,(g) in the cylinder. The gram-formula mass of
FrozenT [24]

The number of mole of oxygen gas, O₂ in the cylinder given the data is 0.5 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

<h3>How to determine the mole of O₂</h3>

From the question given, the following data were obtained:

  • Mass of O₂ = 16 g g
  • Molar mass of O₂ = 32 g/mol
  • Mole of O₂ =?

Mole = mass / molar mass

Mole of O₂ = 16 / 32

Mole of O₂ = 0.5 mole

Complete question

See attached photo

Learn more about mole:

brainly.com/question/13314627

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8 0
1 year ago
Which element is the first element in group 13 of the periodic table of elements?​
joja [24]

Answer:

Boron

Explanation:

8 0
3 years ago
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How do scientist use radioactive decay to date fossils and artifacts
zhuklara [117]
Scientists use radioactive decay to date fossils and artifacts through a process called "carbon dating," which measures the amount of carbon still left in a dead object. The less carbon that exists, the longer that animal or plant as been dead. 
3 0
2 years ago
What physical and social systems are involved in the service industry
const2013 [10]

Answer:

Hey mate.....

Explanation:

This is ur answer........

<em>For example, the communications industry includes all of the physical and social systems that produce books, newspapers, magazines, radio and television broadcasts, billboard advertisements, Internet websites, telephones, and telecommunications, such as the GPS.</em>

<em></em>

Hope it helps!

Brainliest pls!

Follow me! :)

6 0
2 years ago
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