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prohojiy [21]
4 years ago
10

What is the standard unit that astronomers use to measure the size of a star

Chemistry
1 answer:
g100num [7]4 years ago
7 0
Parsecs or abbreviated pc
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1. Which of these is a useful Chemical reaction? 
sergeinik [125]

Answer:

1. b

2.a

Explanation:

Photosynthesis is a useful reaction because it provides plants with food.... Rusting has disadvantages

Rusting is a slow process... complete combustion requires a lot of oxygen... photosynthesis requires carbon(IV) oxide and not oxygen

3 0
3 years ago
Read 2 more answers
the countercurrent arrangement of the two limbs of the loop of henle becomes a multiplier of electrolyte concentration due to wh
enot [183]

The counter-current is the process that occurs in the excretory system. The limbs become the multiplier because of the active transport of the electrolytes that move out.

<h3>What is the loop of Henle?</h3>

The loop of Henle is the part of the excretory system and part of the nephron. It functions in minimizing the water loss in the excretion of urine. There are descending and ascending loops present.

The ascending loop is impermeable to water but permeable to the electrolytes, and hence the concentration of the sodium, potassium, and chloride ions are actively pumped. This makes the solution more concentrated in the ascending loop.

Therefore, the electrolyte concentration results in active transport.

Learn more about the loop of Henle here:

brainly.com/question/13191804

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5 0
2 years ago
Will xenon react to nitrogen and why?
pav-90 [236]
<span>No, xenon will not react on Nitrogen because xenon only reacts with oxygen and fluorine. Xenon only reacts with the 2 elements because these 2 elements contain a strong electronegative element which is high in energy barrier that can move the electrons inside xenon elements.  Xenon is an element with a symbol of Xe, it is odorless and colorless gas. Common uses of xenon are flash lamps and arc lamps. Xenon is a luminous element, it glows when placed near to high voltage electric field.

</span>



7 0
4 years ago
What do 2 or more atoms form when they share electrons in a chemical bond
frutty [35]
A molecule is the answer
3 0
3 years ago
Read 2 more answers
What form of energy causes an ice cube to melt
zalisa [80]

Answer:

Thermal

Explanation:

When something heats up its atoms become further apart making it melt when something heats up or gets heat or loses heat that's thermal energy

6 0
3 years ago
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