3 years ago

From where in the solar system did scientists conduct their spectral anaylses in 1948? How do you know?

Chemistry

1 answer:

Kryger [21]3 years ago

3 0

Answer:

They conducted it from earth

Explanation:

There had never been anything capable of observing it from space launched at that time because Sputnik wasn't even launched

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What is the pressure of 4 moles of helium in a 50 L tank at 308k using PV=nRT

Ilya [14]

Hey there!:

p = ??

n = 4 moles

V = 50 L

T = 308 K

R = 0.082 atm

p*V = n * R * T

p * 50 = 4 * 0.082 * 308

p*50 = 101.024

p = 101.024 / 50

p = 2.020 atm

Hope that helps!

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3 years ago

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rjkz [21]

Answer:

Rubidium

Rubidium is the first element placed in period 5.

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iogann1982 [59]

Answer: A. It can identify the elements in the sample.

Explanation: on edge

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(f) Which of the following alkenes is the major product when 2-bromo-2-methylpentane is treated with sodium ethoxide in ethanol?

belka [17]

Answer:

D) 2-methylpent-2-ene

Explanation:

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2-methylpent-1-ene is minor product since double bond form with secondary Carbon rather than primary Carbon.

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which occupies a larger volume, 600 g of water (with a density of 0.995 g/cm3 ) or 600 g of lead (with a density of 11.35 g/cm3

Montano1993 [528]

Water will occupy larger volume

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