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dedylja [7]
3 years ago
6

Two students are working together on a project. One student applies for to a book to move it across the table to the other perso

n. Student 1 applies the force of 20 N to push the book to student 2. If the force of friction resisting is 4, what is the net force acting on the book.
A. 6 N
B. 10 N
C. 24 N
D. 16 N
Chemistry
2 answers:
Bogdan [553]3 years ago
6 0
D 16 N is your answer
Softa [21]3 years ago
3 0

Answer:

D.16 N

Explanation:

20 - 4 = 16

20 N - 4 N = 16 N

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Answer:

0.15 L

Explanation:

You need to first find the volume of the container.  You can do this by dividing the mass by the density.  This will give you the mass in mL.

5.00 kg = 5,000 g

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13. Acid-catalyzed dehydration-condensation reactions of carboxylic acids and alcohols produce chemicals called
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2 examples of when scientists used space probe technology to find out more about comets.
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3 years ago
A solution of bleach has about 1.5 g of NaOCl dissolved in 220 mL of solution. What is the molarity?
ale4655 [162]

Answer:

0.091 mol/L

Explanation:

Molarity of a substance , is the number of moles present in a liter of solution .

M = n / V

M = molarity ( unit = mol / L or M )

V = volume of solution in liter ( unit = L ),  

n = moles of solute ( unit = mol ),  

Moles is denoted by given mass divided by the molecular mass ,

Hence ,

n = w / m

n = moles ,

w = given mass ,

m = molecular mass .

From the data of the question , it is given that ,

w = 1.5 g

V = 220 mL

Since ,

1 mL = 1/1000L

V = 0.220 L

As we known , the mass of bleach NaOCl is ,

m = 74.44 g/mol

from the above equation , moles can be calculated as -

n = w / m

n = 1.5g / 74.44 g/mol

n = 0.0201 mol

Molarity of the solution is calculated as ,

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M = 0.091 mol/L

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4 years ago
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