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Gekata [30.6K]
4 years ago
12

Can someone’s please answer theses 2 problems? There easy but I can’t get them,please and thanks :)

Chemistry
1 answer:
timama [110]4 years ago
4 0
The metric system is used all around the world because it goes off a ten number base and is easy to calculate.

qualitative data is in words
quantitative data is in numbers
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Which is a characteristic of a solution
Annette [7]
 <span>A solution is somthing desolved in somthing else. By desolved i mean it needs to have some particals ionized a solid you place in water that dissosiates (ions split apart from each other) makes a solution a good solution you can make in your kitchen is a salt-water solution, Put some regular table salt in a glass and stir it and you will notice the salt "disapears" what happens is the sodium ions and the chloride Ions seperate and 'hide' between water molocules. 

In basic terms only some substances can make a solutions others are refered to as insoluble as they can't be seperated in water or another solvent. In actuality however all ionic compounds (compounds that are composed of ions) are at least somewhat soluble, but don't dissociate well at all in some solvents. 

Hope that helps</span>
5 0
3 years ago
Balance the following equation.<br> C3H8(g) + O2(g) → CO2(g) + H2O(l)
Arte-miy333 [17]

Explanation:

C3H8+5O2----->3CO2+4H2O

8 0
3 years ago
B) Ethane has the formula C2H6. In terms of electronic structure,
k0ka [10]

Answer:

There is one single covalent bond between two carbon atoms.

Explanation:

We know that sharing of electrons form covalent bonds.

If we look upon K,L,M ,N shells of the carbon and hydrogen atoms.

We found that Hydrogen is having only  1 electron in K shell.

And Carbon on the other hand is having 2 electrons in K shell and 4 electrons in L shell.

So carbon have  4 valence electrons,and it can share 4 bonds with any relevant atom to complete its octet.

And Hydrogen requires  1 electron to complete its doublet.

Alkane general formula C_{n}H_{2n+2}

For ethane n=2

C_{2}H_{4+2} = C_{2}H_{6}

1 Carbon atom is shared by  3 Hydrogen.

The remaining one electron (4-3)=1 of carbon will be shared with another carbon atom.

An image of the sharing of electrons attached below,

Hence we have only  1 covalent bond between the two.

5 0
4 years ago
W7L5 Stoichiometry Practice 2
Rzqust [24]

Answer:

.079 moles of Nirogen gas (N2)

Explanation:

You can see from the equaton that each ONE mole of N2 produces TWO moles of NH3.

 Find the number of moles of NH3 produced.

    Using Periodic Table : Mole wt of NH3 = 17 gm/mole

          2.7 gm / 17 gm/mole = .1588 moles

      One half as many moles of N2 are needed  = .079 moles

6 0
3 years ago
Describe the importance of the nervous system:
elena-14-01-66 [18.8K]

Answer:

So you can feel the things outside of your body

Explanation:

?

3 0
3 years ago
Read 2 more answers
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