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nirvana33 [79]
2 years ago
13

I NEED HELP ASAP!!!! ITS DUE IN A FEW MINUTES!!!!

Chemistry
1 answer:
OleMash [197]2 years ago
6 0

Answer:

The Sun and the planets were born from a cloud of gas and dust called the solar nebula 4.6 billion years ago. The collapse of the solar nebula was most likely triggered by a shock wave from a nearby supernova explosion. The Sun formed in the center, with the planets surrounding it in a thin disk.

Explanation:

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What type of bond occurs between a metal and a nonmetal
zimovet [89]

Answer:

Ionic Bonds - A bond between metal and nonmetal elements. Involves transferring electrons. Covalent Bonds - Also known as molecular bonds. A bond between two nonmetals

5 0
3 years ago
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Arrange the following elements in order of increasing electronegativity: <br><br> O, F, N, C, B
Vanyuwa [196]

Answer:

Electronegativity increases left to right across a row in the periodic table e.g. C < N < O < F<. b

3 0
2 years ago
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According to the wave- mechanical model of the atom , an orbital is a region of the most probable location of ? ( please provide
notka56 [123]
An orbital is the most probable location of an electron. This is because you can't pinpoint the exact location of an electron because as soon as you do it will have moved again, so orbitals are used to find the probability of where a certain electron is.
7 0
3 years ago
Ralph wanted to breed a pea plant that produced only purple flowers. He continued to breed purple-flowers producing pea plants t
Nikolay [14]

Answer:

B

Explanation:

Number of purple flowers

Number of white flowers

1

705

224

2

792

189

3

834

102

4

889

84

5

938

21

6

952

0

Ralph wanted to breed a pea plant that produced only purple flowers. He continued to breed purple-flower producing pea plants together over six generations. The results of Ralph's selective breeding are shown above. What did the selective breeding do to the population of pea plants?

A. increased its genetic diversity

B. decreased its genetic diversity

C. caused a new species of pea plant to form

D. caused a pea plant to exhibit a new characteristic

The correct answer would be that <u>selective breeding decreased the genetic diversity of the population of the pea plants.</u>

The genetic diversity of a population can be viewed as the number of genes in the gene pool of the population.

With each successive generation, more purple-flowered and less white-flowered pea plants were being produced until the 6th generation when only purple-flowered pea plants were produced. <em>The ratio of the purple color gene to that of white color kept increasing until there was no longer a white color gene in the population. Hence, the genetic diversity of the population was decreased by the selective breeding.</em>

<em>The correct option is B</em>

5 0
3 years ago
Calculate the massa of water produced if 1.00 gran of hydrogen is burned in 10.00 grams of oxygen
Anna71 [15]
The first step to this question is finding the balanced chemical reaction.
H₂+1/2O₂⇒H₂O
Then you need to find the limiting reagent by finding the moles of each reactant then finding how much product each amount of reactants will form.  The reactant that produces the least amount of product is the limiting reagent.
moles of H₂:
1g/(1g/mol)=1mol
moles of O₂:
10g/32g/mol=0.3125mol
moles of H₂O formed with amount of H₂:
1molH₂x(1molH₂O/1molH₂O)=1molH₂O
moles of H₂O formed with amount of O₂:
0.3125molO₂x(1molH₂O/0.5molO₂)=0.625molH₂O
Since less water is produced with the amount of oxygen given, oxygen is the limiting reagent and the moles of water formed from the oxygen is the moles of H₂O we will use to find the amount of H₂O produced.
0.625molH₂Ox18g/mol=11.25g H₂O
3 0
3 years ago
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