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galben [10]
2 years ago
12

Which statement best explains why the sun and the moon appear to be about the same size in the sky?

Chemistry
2 answers:
Dahasolnce [82]2 years ago
7 0
I think the answer is C... not one 100%
hodyreva [135]2 years ago
3 0
The answer is B, as the moon is about 400 times smaller than the sun, but is also about 400 times closer to earth. So, it has a smaller diameter and is closer to earth than the sun.
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As an atom's nucleus gets larger the electric charges repelling the protons get larger. To compensate for this greater electric
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i think the greater the electric charge the atom decreases in size
5 0
2 years ago
Read 2 more answers
A liquid has a volume of 34.6 ml and a mass of 46.0 g. what is the density of the liquid?
Minchanka [31]

The density of a substance can simply be calculated by dividing the mass by the volume:

density = mass / volume

 

Therefore calculating for the density since mass and volume are given:

density = 46.0 g / 34.6 mL

density = 1.33 g / mL

5 0
2 years ago
An atom of lithium-7 has an equal number of
slavikrds [6]
The answer is (2). The Lithium has 3 protons and 4 neutrons. For every neutral atom, it will have the same number of protons and electrons. Because the proton has one positive charge and electron has one negative charge and neutron does not have charge.
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Plasmid DNA and a gene of interest are cut with the enzyme PpuMI. Write a possible sequence of bases for the sticky end of the g
nasty-shy [4]

Answer:

5' RG        GWCCY 3'

3' YCCWG        GR 5'

Explanation:

The enzyme PpuMI is a restriction endonuclease enzyme, it has a specific recognition site where it cut the DNA. The source of the enzyme is from ​​an E. coli strain that carries the PpuMI gene from Pseudomonas putida (R. Morgan).

The enzyme PpuMI recognizes specific sequence with palindrome arrangement. It target the sequence 5' RGGWCCY 3'

target Sequence: 5' RGGWCCY 3'

                            3' YCCWGGR 5'

The enzyme cleavage point is at:

5' RG^GWCCY 3'

3' YCCWG^GR 5'

The product of the cleavage will give a sticky end Cleavage:

5' RG        GWCCY 3'

3' YCCWG        GR 5'

Note: R stands for purines (adenine and guanine). Y stands for pyrimidines (cytosine, thymine, and uracil). And W represents adenine or thymine.

5 0
2 years ago
Which two rocks are primarily composed of a mineral that bubbles with acid?
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8 0
2 years ago
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