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zepelin [54]
3 years ago
8

What is inside of a galactic center? (Inner bulge/bar of a galaxy) What kind of gases does it contain?

Chemistry
1 answer:
vredina [299]3 years ago
8 0
The galactic center, meaning the center of the milky way contains millions of stars all of various types
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what is the mass of water vapor produced when 3.2 liters reacts with 8.7 liters of oxygen gas at STP?
uranmaximum [27]

Answer:

2.57g

Explanation:

First, let us write a balanced equation for the reaction. This is illustrated below:

2H2 + O2 —> 2H2O

Next let us determine the limiting reactant. This is achieved as follows:

From the equation,

2L H2 required 1L of O2.

Therefore, 3.2L of H will require = 3.2/2 = 1.6L of O2

From the calculation above, O2 is excess because the volume of O2 given from the question is far greater than the volume of O2 obtained from our calculation. Therefore, H2 is the limiting reactant.

Now let us covert 3.2L of H2 to mole. This is illustrated below:

1mole of a gas occupy 22.4L at stp

Therefore, Xmol of H2 will occupy 3.2L i.e

Xmol of H2 = 3.2/22.4 = 0.143mol

From the equation,

2moles of H2 produced 2moles of H2O.

Therefore, 0.143mol of H2 will also produce 0.143moles of H2O.

Now, we can obtain the mass of the water vapour produced by convert 0.143mol of H2O to gram. This is illustrated below:

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Number of mole of H2O = 0.143mol

Mass of H2O =?

Mass = mole x Molar Mass

Mass of H2O = 0.143 x 18 = 2.57g

The mass of water vapour produce is 2.57g

8 0
3 years ago
What is a matter a wave travels through called?
tresset_1 [31]

Answer:

Medium

Explanation:

It is called a medium

5 0
3 years ago
Is 0.2 liters of soda the same measurement as 2000 grams of soda
vesna_86 [32]

Answer:

0.2 liters = 200 grams

Explanation:

G = L x 1000

G= 0.2 x 1000

G= 200g

3 0
2 years ago
How can we specify / identify a certain electron?<br> (Quantum forces)
Serga [27]

Answer:

electrons are less than 1 amu, they are also negative charged. they are very small too

3 0
3 years ago
The blue underlined part of the chemical formula above represents a(n) ______________.
Nataly [62]
I’m not totally sure but I think the answer is B
7 0
2 years ago
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