3 years ago

Earth's original atmosphere probably consisted mostly of which gas?

Chemistry

1 answer:

balandron [24]3 years ago

6 0

D-Carbon Dioxide
Hope this helps :)

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What is the molarity of 2 moles of iron oxide,FeO in 8 Liters of water

faust18 [17]

Answer : 0.25 M

explanation :

- Molarity is the number of moles of solute per liters of solvent.

- Molarity (M) = (n) / V (liter) = 2 / 8 = 0.25 M

5 0

2 years ago

Let this be an easy 5 points for your brainly account all is ask for in return is a "thank you"

Svet_ta [14]

Answer:

The number of neutrons present in one atom of isotope of Silicon of mass 28 amu is<u> 14 neutrons</u>

Explanation:

Symbol of Si isotope

$_{14}^{28}\textrm{Si}$

<u>Number of Neutron = Mass number - Atomic Number</u>

Mass number = Total number of protons and neutrons present in the nucleus of the atom.For Si = 28 amu

Atomic Number = Total number of Protons present in the nucleus.

Si = 14

Number of neutron = 24 - 14

= 14

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3 years ago

Lina20 [59]

Answer:

Please see attachment

Explanation:

Please see attachment

6 0

3 years ago

Pb + Fe(SO4) =Pb(SO4) + Fe what type of reaction is this ?

VikaD [51]

Answer:

Single replacement

Explanation:

3 0

2 years ago

A sample of sugar (C12H22O11) contains

Oduvanchick [21]

Answer: 0.25 mol

Explanation:

Use the formula n=N/NA

n= number of mols

N = number of particles

Nᵃ = Avogadros constant = 6.02 x

So, n=

The 10 to the power of 23 cancels out and you are left with 1.505/6.02, which is approximately 1/4. This is the same as 0.25 mol.

Hope this helped :)

5 0

3 years ago