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Kitty [74]
3 years ago
3

Which statement describes the solution to the system of equations? mc023-1. Jpg the system has exactly one solution. The system

has exactly two solutions. The system has no solutions. The system has infinitely many solutions.
SAT
2 answers:
IRINA_888 [86]3 years ago
7 0

Answer:

infinitely many

Explanation:

inn [45]3 years ago
3 0

Answer:

2

Explanation:

Because if you add 1  to 8 you get 9 then subtract 9 by 7 then and your answer is 2

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A sample of a compound that contains only the elements c, h, and n is completely burned in o2 to produce 44. 0 g of co2, 45. 0 g
Elan Coil [88]

Answer:

B. CH₅N

Explanation:

The combustion reaction of a compound CₐHₓNₙ with O₂ is:

CₐHₓNₙ + O₂ → a CO₂ + X/2 H₂O + n NO₂

Where 1 mole of CₐHₓNₙ with an excess of O₂ produce a moles of CO₂, X/2 moles of H₂O and n moles of NO₂

Thus, you need to convert the mass of CO₂ and H₂O to moles to find the C:H ratio and determine a possible empirical formula thus:

Moles CO₂ (Molar mass 44g/mol):

44g ₓ (1mol / 44g) = 1 mole CO₂ = 1 mole C

Mole of H₂O (Molar mass 18g/mol):

45g ₓ (1 mol / 18g) = 2.5 moles H₂O = 5 moles H

Thus, in the compound you have 5 moles of H per mole of C, and a possible empirical formula is:

B. CH₅N

The only structure that meet this C:H ratio

8 0
3 years ago
In one Earth century (100 years), both Saturn and Earth will complete revolutions of the Sun. Which of the following
Vika [28.1K]

Answer:

Earth will complete more revolutions than Saturn.

Explanation:

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Neptune is the planet that takes longer to complete one revolution around the Sun, approximately 164.79 years, while it takes only 88 days for Mercury to complete one revolution.

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Then the questions will be posted when u guys are done HAHA I see u can read fast though
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Answer:

That is very nice...

Very intersting

Explanation:

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The BoE or Bill of Exchange

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