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3 years ago

Name one reason life was impossible on early earth

Chemistry

2 answers:

Nesterboy [21]3 years ago

5 0

Because the atmosphere of early earth was rich in hydrogen ongoing life is impossible with reproduction

SSSSS [86.1K]3 years ago

4 0

There is no life because none other planets have the energy to survive earth has enough energy Because it has gravity there's the moon the sun and the rain that helps us survive.

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Can anyone please help with this? 20 points

Evgen [1.6K]

Answer: I think its c or d

Explanation:

5 0

3 years ago

The partial pressure of N2 in a mixture of gases, where the total pressure is 1.50 atm, is 300. torr. What is the mole fraction

makvit [3.9K]

Answer:

The mole fraction of N₂ is 0.26.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.

So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

PA = XA * PT

In this case:

PA= PN₂= 300 torr
XA=XN₂= ?
PT= 1.50 atm= 1140 torr (being 1 atm= 760 torr)

Replacing:

300 torr= XN₂*1140 torr

Solving:

$X_{N_{2} } =\frac{300 torr}{1140 torr}$

XN₂= 0.26

The mole fraction of N₂ is 0.26.

6 0

3 years ago

How many atoms are there in an aluminium molecule

PtichkaEL [24]

Answer:

There are 6.022 × 10²³ atoms in one molecule of aluminium

8 0

2 years ago

Read 2 more answers

Ammonia, NH3, can be made by reacting nitrogen and the equation is N2 + 3H2 --> 2NH3 How many moles of NH3 can be made if 18

alukav5142 [94]

N2 + 3 H2 -> 2 NH3
Just use their stoichiometric coefficients (number before the chemical's name) from the balanced chemical reaction to make ratios and solve for the unknown. In this case, 2 moles of NH3 are produced for every 3 moles of H2. Thus, 
7.5 moles H2 x (2 moles NH3 / 3 moles H2) = 5 moles NH3
Thunderclan89

3 0

3 years ago

In which of these samples do the molecules most likely have the most kinetic energy?

hichkok12 [17]

Answer:

water vapor

Explanation:

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3 years ago