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Mars2501 [29]
2 years ago
7

Where did the atoms come from in the first place?

Chemistry
2 answers:
Salsk061 [2.6K]2 years ago
4 0

Answer:

All the carbon atoms in the human body were created in the stars. Elementary particles, such as protons, were formed during the "big bang"; that amazing moment about 14 billion years ago in which the universe got it's start.

goldenfox [79]2 years ago
3 0

Answer:

Cheese

Explanation:

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If 30.0 mL of a 12.0 M hydrochloric acid (HCI) stock solution is diluted to a volume of 500.0 mL,
klemol [59]

Answer:

The concentration of dilute solution is 0.72M

Explanation:

According to the given question

V1=30 ml

 S1 = 12 M

 V2= 500 ml

then S2 =?

  we all know that V1S1=V2S2

                           or  S2= V1S1÷V2

                            or  S2 = 30×12÷500

                             or  S2= 360÷500

                             or  S2  =0.72 M.

The concentration of dilute solution is 0.72 M

5 0
3 years ago
What is the iupac name of N2O4​
galben [10]

<em><u>Dinitrogen Tetraoxide</u></em>

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6 0
3 years ago
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You mix together two different substances. There is a loud noise, and a burst of flame. Which of the following is most likely to
cupoosta [38]
A chemical reaction is occuring
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What unit is used to measure cell potential?
Lilit [14]

Volt is the unit to measure cell potential.

Explanation:

The cell potential is the measure of potential difference in the two halves of the electrochemical cell.

It is the measure of how much voltage exists between the two halves of the battery. The unit of volt is joule/coulomb. The cell potential is measured by voltmeter.

The energy per unit charge from the oxidation-reduction reaction to drive the reaction is cell potential.

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Which of these animals must gain heat to perform internal activities such as digestion? A) warm-blooded animal B) cold-blooded a
Jlenok [28]
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