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Ber [7]
3 years ago
6

How do scientists use DNA to study the origins of humans? a. Cloning c. Using Punnett squares b. Examining the number of chromos

omes in populations d. Looking at the genetic markers in different populations
Chemistry
1 answer:
Korolek [52]3 years ago
5 0
B. examining the number of chromosomes in population
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What is the barycenter of the moon and the earth​
kirill [66]

Answer:

The barycenter is the point in space around which two objects orbit. For the Moon and Earth, that point is about 1000 miles (1700 km) beneath your feet, or about three-quarters of the way from the Earth's center to its surface.

Explanation:

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When light mass nuclei combine to form a heavier more stable nucleus this is called​
n200080 [17]

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Nuclear fusion

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Nena___her hair every morning. <br>A.BRUSH <br> B.BRUSHES <br>C.BRUSED <br>D. WILLBRUSHED​
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I'm pretty sure it's A. BRUSH

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7 0
3 years ago
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What type of reaction breaks the bonds that join the phosphate groups in an ATP molecule? What type of reaction breaks the bonds
Paraphin [41]

Answer:

Hydrolysis

Explanation:

The phosphate groups in an ATP molecule are joined forming an ester group. Esters can be formed when an alcohol (-OH) bonds with an acid (-COOH, or, in the case of phosphoric acid, HPO_{5}). When this bonding occurs, the two molecules together lose a molecule of water, because the alcohol loses the hydroxyl and the acid loses an hydrogen, and the three atoms combine to form water. All the chemical bonds that are formed with the loss of a water molecule can also be broken using water, and this reaction is called hydrolysis.

4 0
3 years ago
When methane, CH4, is combusted, it produces carbon dioxide, CO₂, according to the unbalanced equation: CH4 +0₂ - CO₂ + H₂O.
nevsk [136]

The balanced equation will be CH_4 + 2O_2 --- > CO_2 + 2H_2O

<h3>Stoichiometric problems</h3>

The balanced equation of the reaction would be as follows:

CH_4 + 2O_2 --- > CO_2 + 2H_2O

The mole ratio of methane to carbon dioxide is 1:1.

10 grams of methane will give 10/16 = 0.625 moles

0.625 moles of carbon dioxide would give 0.625 x 44.01 = 27.506 grams.

Thus, 10 grams of methane will produce approximately 27 grams of carbon dioxide stoichiometrically.

The reaction obeys the law of conservation of mass because the atoms of all the elements before and after the reaction are balanced.

More on stoichiometric problems can be found here: brainly.com/question/14465605

#SPJ1

3 0
2 years ago
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