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alexandr1967 [171]
3 years ago
12

11) A sample of rhenium of suspected extrasolar origin (translation: not from this solar

Chemistry
1 answer:
jarptica [38.1K]3 years ago
4 0

<u>Answer:</u>

<em>Atomic number 75 is dedicated to an element named rhenium and has been given Re as its chemical name.</em>

<u>Explanation:</u>

With a really low concentration it is one of the rarest metals that is found in Earth's crust.

Like all other elements rhenium also has certain isotopes among with 185 and 187 are the most stable ones. Hence these two are the ones that are naturally available abundance is 34% and 63% respectively.

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Draw eight circles and nine more in a big circle = this represents your nucleus
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5. A family is traveling using three different modes of transportation. Seven of them travel in a large recreational vehicle, tw
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Answer:

All three vehicles have the same kinetic energy because they have equal speed.

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When a sample is heated water is observed at the top of the tube. The compound melts and changes color. Te residue is not entire
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Answer:

hydrate

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3 years ago
A square chunk of plastic has a length of 5 cm, width of 5 cm and height of 5 cm. It has a mass of 200 g. What is it’s density
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Answer:

1.6g/mL

Explanation:

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In this case it is 5cm*5cm*5cm = 125cm^3

Since we know that 1cm^3 ~ 1mL we can convert the volume to mL as so:

125cm^3 (1mL/(1cm^3)) = 125mL

Then simply plug into the density equation:

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3 0
2 years ago
What holds the two strands of a DNA molecule together?A. Ionic bonds between negatively and positively charged ionsB. Covalent b
statuscvo [17]

Answer:

D. Hydrogen bonds between complementary base pairs89

Explanation:

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I hope you find this information useful and interesting! Good luck!

8 0
3 years ago
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