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erma4kov [3.2K]
3 years ago
13

. Which information is NOT included in each square of the periodic table in your text? a. atomic number c. melting point b. chem

ical symbol d. atomic mass
Chemistry
1 answer:
azamat3 years ago
6 0
The correct answer is melting point
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During prophase, which of the following events
alexdok [17]

Answer:

Spindle fibers form.

DNA condenses into chromosomes.

Explanation:

Prophase is the first stage of mitosis. Mitosis produces 2 daughter cells from a parental cell.

Spindle fibers form - this is true. During prophase, the mitotic spindle forms. Later during mitosis the spindle attaches to the centromere of chromosomes and pulls them to opposite ends of the cell prior to division

DNA condenses into chromosomes.  - this is true. In the nucleus during interphase, the DNA is relatively loosely compacted. However, prior to division, the DNA is condensed into structures called chromosomes which are then paired up and distributed to the daughter cell.

Chromosomes move to opposite ends of the  cell.  - this is false. This happens during anaphase

Nuclear membrane begins to re-form. - this is false. This happens during telophase.

7 0
3 years ago
Please answer this I need HELLPPP
Serga [27]

Answer:

B

Explanation:

why because think about it 0.5 is more closer to 1.0

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3 years ago
Which of the following reactions would be classified as oxidation-reduction? Check all that apply. View Available Hint(s) Check
erica [24]

Answer:The 1st and 2nd reactions are the example of oxidation -reduction.

Explanation:

Oxidation is basically when a species  loses electrons and  reduction is basically when the species gains  electrons.

A reaction is known as an oxidation -reduction reaction only if  oxidation and reduction simultaneously occur in the reaction. It basically means if a species is getting oxidized in the reaction then the other species present in the system must be reduced in the reaction.

Oxidation-reduction reactions are also known as redox reactions.

In the 1st reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of   chlorine is  0 in reactants and  in products is  -1 so chlorine is reduced. Hence Na is oxidized and Cl is reduced so the reaction is a example of oxidation-reduction.

2Na(s)+Cl₂(g)→2NaCl(s)

In the second reaction the oxidation state of Na in reactant is 0 and in products is +1 hence Na is oxidized and the oxidation state of Cu is +1 in reactant and 0 in products so Cu is reduced. Hence Na is oxidized and Cu is reduced so the reaction is an example of oxidation-reduction.

Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)

In the third reaction the oxidation state of Na changes from +1 to +1 and that of Cu also changes from +1 to +1. So there is no change in oxidation state of the species present in reactants and products. Hence this reaction is not an example of oxidation and reduction.

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3 years ago
What are the different forms of energy into which solar energy can be changed?
Marysya12 [62]

Answer:

Electric and heat

Explanation:

Forms of solar energy include electricity and heat

7 0
2 years ago
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What structural formula represents 4 electrons shared between two atoms
arsen [322]

I think it’s D. I’m not really shore....

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