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SCORPION-xisa [38]
3 years ago
10

Mars is 7AU from earth, what is that in mm

Chemistry
1 answer:
aniked [119]3 years ago
6 0

7AU = 1 × 10^15 mm

7AU × (1.5 ×10^8 km/1 AU) = 1.0 × 10^9 km

1.0 × 10^9 km × (1000 m/1 km) = 1.0 × 10^12 m

1.0 × 10^12 m × (1000 mm/1m) = 1 × 10^15 mm

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A 2.912 g sample of a compounds containing only C, H, and O was completely oxidized in a reaction that yielded 3.123 g of water
Taya2010 [7]

Answer:

Explanation:

18 gram of water contains 2 g of hydrogen

3.123 gram of water will contain 2 x 3.123 / 18 = .347 g of hydrogen .

44 gram of carbon dioxide contains 12 g of carbon

7.691 gram of carbon dioxide will contain 12 x 7.691 / 44 = 2.1 g of carbon .

So the sample will contain 2.912 - ( .347 + 2.1 ) g of oxygen .

= .465 g of oxygen .

moles of Carbon = 2.1 / 12 = .175

moles of hydrogen = .347 / 1 = .347

moles of oxygen = .465 / 16 = .029

Ratio of moles of carbon , oxygen and hydrogen ( C,O,H )

= 0.175 : 0.029 : 0.347

= .175/ .029 : 1 : .347 / .029

= 6 : 1 : 12

So empirical formula = C₆H₁₂O

Let the molecular formula be (C_6H_{12}O)_n

molecular weight = n ( 6 x 12 + 12x 1 + 16)

= 100 n

Given 100 n = 100.1

n = 1

Molecular formula = C₆H₁₂O.

3 0
2 years ago
What form of energy does a compressed spring have? A) heat energy B) kinetic energy C) chemical energy D) potential energy
Akimi4 [234]

Answer:

D) Potential Energy

Explanation:

The compressed spring has elastic potential energy. If it is allowed to de-compress, the elastic potential energy will be converted to kinetic energy.

8 0
3 years ago
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T or F: Lone pairs around the oxygen atom of a water molecule play no role in determining its molecular geometry?
Mama L [17]

Answer:

Explanation:

They play a very important part. The geometry is not a straight line. It is an angle over 90 which means that the molecule has the same general shape as a boomerang. The two hydrogens and the 2 lone electron pairs try to get away as far as possible from each other. The actual shape results in a tetrahedron shape. But the two hydrogens and 1 oxygen actually look like the aforementioned boomerang.

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The earth rotates on an imaginary line called an?
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The Earth rotates on an imaginary line called an axis, which runs through Earth from the North Pole to the South Pole. The rotation of the Earth causes day
8 0
3 years ago
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1. The molecule of Aspirin C_{9}*H_{8} * O_{4} contains 9C atomsatoms, and 4 Oxygen atomsHow are we using the molecular formula
tatiyna

The mass can be obtained from the molar mass when the number of moles is known.

<h3>What is molecular formular?</h3>

The molecular formlar is the formula of the compound that shows the number of atoms of each element that is present in the molecule. Asprin is a moecule that has the molecular formula C9H8O4.

To use the molecular formula to determine weight, we have to know the number of moles involved.

Mass = number of moles * molar mass.

Learn more about molar mass: brainly.com/question/12127540

6 0
2 years ago
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