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UkoKoshka [18]
3 years ago
12

How many moles are in 100 grams of NaCl

Chemistry
2 answers:
eimsori [14]3 years ago
8 0
There is 1.71 moles in 100 grams of NaCl. You find this by taking the molar mass of Na which is 22.99, and Cl which is 35.45, and you add them together, then divide by 100. Hope this helps.
dybincka [34]3 years ago
5 0
If you check the Periodic table, to Molar Mass of Sodium Chloride NaCl is 58.3 g/mol. 
So, you divide 1 mol over the Molar mass of NaCl which 58.3, and the answer you divide it by 100. 
So you get:
\frac{1 mol}{58.3} * 100
You do the Calculations and you get about 1.72 mol of NaCl

Hope this Helps :)
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Calculate the number of mol of solute in 8.00 × 102 mL of 0.250 M HCl.
Alenkasestr [34]

Moles = Volume*Molarity

           = 0.008*0.250

           = 0.002 mol

8 0
3 years ago
Use the dichotomous key below to identify the cell type.
xenn [34]

The dichotomous key is not given here, however, the correct dichotomous key is as follows:

step- 1a cell has a nucleus and organelles - go to step 2

        1b cell has no nucleus or organelles - bacterial cell

step- 2a cell has a cell wall - go to step 3

         2b cell has no cell wall - animal cell

step-  3a cell has chloroplasts - plant cell

3b cell has no chloroplasts - fungal cell

Using this dichotomous key the cell can be identified as - Fungal cell.

A dichotomous key is an essential scientific tool that is used to find out the various kinds of organisms on their observable traits. Dichotomous keys have a series of statements with two different choices in each step that will take the student or user to the correct identification.

Identification of the given cell:

1. Follow step 1.

  • If cells have a nucleus and organelles - yes then go to step 2

2. follow step 2.

  • 2a. if cell has a cell wall - yes go to step 3

3. follow step 3.

  • 3a. if cell has chloroplasts - no then fungal cell

Fungal cells have a nucleus and cell organelles enclosed with a cell wall around the plasma membrane but do not have chloroplast.

Thus, Using this dichotomous key the cell can be identified as - Fungal cell.

Learn more about fungal cells:

brainly.com/question/14470940

6 0
3 years ago
One atom of an element A =6.644 *10^-23 gm. calculate the no. of gram atom in 80 kg of it.<br><br>​
Oksana_A [137]

Answer:

5.3152*10^-24

Explanation:

3 0
4 years ago
What amount of acid is esterified if a mixture consist initially of 1.0mole of ethanoic acid,1.0mole of ethanol and 1.0mole of w
ale4655 [162]

Answer:

0.54 mole

Explanation:

                                     CH3COOH    CH3CH2OH   CH3COOCH2CH3    H2O​

Initial concentration   1.0 mole         1.0 mole                0 mole                  1.0mol

Change                          - x                   - x                      + x                          + x  

Equilibrium                   (1.0 - x)          (1.0 - x)                   x                       (1.0 + x)

K = [CH3COOCH2CH3]*[H2O​]/[CH3COOH]*[CH3CH2OH]

x*(1.0+x)/(1.0-x)(1.0-x) = 4.0

x+x²=4*(1-x)²

x+x² = 4(1² - 2x + x²)

x + x² = 4 - 8x + 4x²

4 - 8x + 4x²- x² - x= 0

3x² - 9x + 4 = 0

x=2.5 , x=0.54

2.5 mole of acid cannot be esterified, because there is only 1.0 mole of acid,

so answer is 0.54 mole.

3 0
3 years ago
Explain how creativity can play a role in the construction of scientific questions and hypotheses.
ozzi
Like if you imagine making something you create a hypothesis about was to make that happen
6 0
4 years ago
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