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bogdanovich [222]
3 years ago
6

Which observation tool is the most advanced?

Chemistry
2 answers:
aalyn [17]3 years ago
7 0

Answer

B. Hubble Space Telescope

Explanation

The Hubble Space Telescope From NASA that was launched in 1990 is the most advanced one that has been observing the Earth orbit for more than 18 years .Its wavelengths are in the visible, UV , and Near-IR and it produces images that are clear and stunning.

Black_prince [1.1K]3 years ago
5 0

Answer:

C. Gran Telescope canarias.

Explanation: Just took the quiz

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Scientists measured a drop in the average global temperature of about 1 degree F (0.6 degrees C).
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Which of the following statements correctly explains how latitude affects temperature?
dusya [7]

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It's 1, places that are closer to the equator receive more direct sunlight and have

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2 years ago
How many liters of oxygen gas can react with 84.0 grams of lithium metal at standard temperature and pressure? Show all of the w
ddd [48]
From the equation:
4mol Li react with 1 mol O2
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3 years ago
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What is the predominant intermolecular force in the liquid state of each of these compounds: hydrogen fluoride (HF), carbon tetr
telo118 [61]

Answer:

HF - hydrogen bonding

CBr4 - Dispersion

NF3 - Dipole-dipole

Explanation:

Hydrogen bonding occurs when hydrogen is covalently bonded to a highly electronegative atom such as fluorine, chlorine nitrogen, oxygen etc. Hence the dominant intermolecular force in HF is hydrogen bonding.

CBr4 is nonpolar because the molecule is tetrahedral and the individual C-Br dipole moments cancel out leaving the molecule with a zero dipole moment hence the dominant intermolecular force are the dispersion forces.

NF3 has a resultant dipole moment hence the molecules are held together by dipole-dipole interaction.

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Answer:

B?

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In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

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