1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
NNADVOKAT [17]
3 years ago
5

1. How many moles are in 24.6 grams of NaCl?

Chemistry
1 answer:
Dvinal [7]3 years ago
3 0
The gram to mole conversion is pretty simple. First you need to find the molar mass of the compound. The way you do that is take the combined atomic mass and convert it to grams (that’s mass of a single mole of that compound). For this example sodium’s atomic mass is 22.9 amu and chlorine’s is 35.45 amu. The molar mass of sodium chloride is those two number combines IN GRAMS.

22.99g + 35.45g = 58.44g

Now to find out 24.6g of Sodium Chloride you will divide the number of grams in a problem by the molar mass.

24.6 / 58.44 = 0.421 mol of NaCl
You might be interested in
Rank the elements in each of the following sets in order of increasing IE₁:
zavuch27 [327]

Explanation:

Ionization energy is defined as the energy required to remove the most loosely bound electron from a neutral gaseous atom.

When we move across a period from left to right then there occurs a decrease in atomic size of the atoms. Therefore, ionization energy increases along a period.

But when we move from top to bottom in a group then there occurs an increase in size of the atoms. Hence, ionization energy decreases along a group.

(a)  As Sb, Sn and I are all period 5 elements. Hence, these elements are arranged in order of increasing IE_{1} as follows.

                             Sn < Sb < I

(b)  As Sr, Ca, and Ba are all elements of group 2a. Hence, these elements are arranged in order of increasing IE_{1} as follows.

                            Ba < Sr < Ca

3 0
3 years ago
What is protoplasm of a cell that surrounds the nucleus?
max2010maxim [7]

Explanation:

Cytoplasm is a semi-solid substances inside cells.

6 0
3 years ago
Please help<br> Explain why a molecule that has polar bonds can be a polar molecule.
Zepler [3.9K]

Answer:

Explanation:

Well, obviously a molecule with polar bonds can be polar in itself. It's like saying I am an atheltic person who can just reach the basketball rim with my head and also I can dunk.

But if the question is how can a molecule that in non-polar have polar bonds, well, its because the polar bonds' dipole cancels each other out. It's like a tight rope. If a person pulls in one direction, it intuitively, the rope would go in that direction. However, if a person pulls in the other direction with the same amount of force, the rope stays still. This is the same case. Although molecules can have different electronegativities, the pull of electrons in one direction is cancelled out by a pull in the opposite direction, making the net dipole 0.

This is common for main VSERP shaped molecules like linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

8 0
3 years ago
An unknown compound, B, has the molecular formula C7H12. On catalytic hydrogenation 1 mol of B absorbs 2 mol of hydrogen and yie
Ne4ueva [31]

Answer:

5-methylhex-1-yne//5-methylhex-2-yne//2-methylhex-3-yne

Explanation:

We have to start with the information on the <u>IR spectrum</u>. The signal at 3300 is due to a <u>C-H bend sp carbon</u> and the signal in 2200 is due to the <u>stretch carbon-carbon</u>. Therefore we will have an alkyne. Now if we have 2-methylhexane as the product of hydrogenation we have <u>several options to put the triple bond</u>. Between carbons 1 and 2 (5-methylhex-1-yne), between carbons 2 and 3 (5-methylhex-2-yne) and between carbons 3 and 4 (2-methylhex-3-yne). On carbon 5 we have a tertiary carbon therefore we dont have any other options.

See figure 1

I hope it helps!

3 0
4 years ago
which of the following activities could cause liquid molecules to overcome intermolecular attractive forces and become gas molec
Anna [14]
The answer is C. increasing the temperature of the liquid.

Increasing the temperature of the liquid also means that you are providing energy to the liquid, which makes the molecules overcome intermolecular attractive forces, move more constantly, and become gas molecules.

Hope this would help~ 
3 0
3 years ago
Other questions:
  • Question 2 Here are four sketches of pure substances. Each sketch is drawn as if a sample of the substance were under a microsco
    5·1 answer
  • Show calculation of converting 0.2000kg to grams
    7·1 answer
  • How and why does 2-Naphthol differ from benzoic acid when adding NaHCO3
    10·1 answer
  • Which would dissolve faster individual salt crystals a big block of salt
    5·1 answer
  • If 6.96 mol of C 5 H 12 reacts with excess O 2 , how many moles of CO 2 will be produced by the following combustion reaction? C
    10·1 answer
  • Match the factors which affect the rate of dissolving/dissociation. 1. increased surface area . 2. like polarity increases rate
    14·2 answers
  • Cube has a mass of 15g and the volume is 30cm what’s its density
    13·1 answer
  • Write an equation for the hydrogenation of glyceryl trilinolenate, a fat formed from glycerol and three linolenic acid molecules
    11·1 answer
  • A motorcycle that travels north 201m in 7s. What is it's velocity?<br> 7. D=<br> 8. TE<br> 9. V=
    13·1 answer
  • How can you increase the momentum of an object?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!