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4 years ago

Is there unlimited space in space?

Chemistry

2 answers:

suter [353]4 years ago

8 0

Yes there is because in theory it is constantly expanding

Ahat [919]4 years ago

3 0

I think so since in the universe there are other universes as well so maybe the might be even more space in space it is kind of confusing but it makes sense so yes the is space in space. Hope it helped pls give brainlyest

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Describe the structure of an ionic compound

maxonik [38]

Answer:

An ionic compound is a giant structure of ions.

Explanation:

As a result of ion attraction, ions form a regular pattern with oppositely charged ions next to each other in an ionic compound. Ions are organized in an ionic network, a giant structure made up of alternating ions.

4 0

3 years ago

What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Oksi-84 [34.3K]

265
your answer would be 265. Because the charge of +1 means there is one more proton then electron. So, 108 protons plus 157 neutrons gives you your mass number of 265.

4 0

3 years ago

A student determines the molar mass of acetone

love history [14]

The Formula of Acetone is $C_3H_6O$
To find the Mass Molar of a compound, you add the Atomic weights of it's atoms.
If you check the Periodic table:
Atomic Weight of Carbone C: 12.0107
Atomic Weight of Hydrogen: 1.00794
Atomic Weight of Oxygen: 15.9994

So, you got:
Total Atomic Weight of Carbone in Acetone: 12.0107 * 3 = 36.0321
Total Atomic Weight of Hydrogen in Acetone: 1.00794 * 6 = 6.04764
Total Atomic Weight of Oxygen in Acetone = 15.9994 * 1 = 15.9994

Now, you add this numbers
36.0321 + 6.04764 + 15.9994 = 58.07914

So, the Molar Mass of Acetone is 58.09714 g/mol

Hope this Helps :D

7 0

3 years ago

Consider the free-body diagram. If you want the box to move, the force applied while dragging must be greater than the

Alex17521 [72]

The answer is C. Friction Force

6 0

4 years ago

Read 2 more answers

In one on the compounds that contains only oxygen and nitrogen, 3.50 g of nitrogen combines with 2.00 g of oxygen. In another, 0

BigorU [14]

Answer:

Explanation:

The law of multiple proportions states that if two elements X and Y combine together to form more than one compound, then the several masses of X which chemically combine with a fixed mass of Y is in simple ratio.T

FIRST CASE ;

Molar mass of Nitrogen gas = 28 g/mol

Number of moles of Nitrogen gas = Mass/molar mass = 3.50/28 = 0.125 moles

Number of moles of Oxygen gas = Mass/molar mass = 2.00/32 = 0.0625 moles

Hence the ratio of number of moles of N2 to O2 will be 0.1295 : 0.0625 or 2:1

Similarly for the SECOND CASE ;

Molar mass of Nitrogen gas = 28 g/mol

Number of moles of Nitrogen gas = Mass/molar mass = 0.875/28 = 0.03125 moles

Number of moles of Oxygen gas = Mass/molar mass = 1/32 = 0.03125 moles

Hence the ratio of number of moles of N2 to O2 will be 0.03125 : 0.03125 or 1:1

4 0

3 years ago