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
e-lub [12.9K]
2 years ago
8

The outer skin makes the surfboard more expensive. Suggest two reasons why an outer skin is added to the polystyerene core.

Chemistry
1 answer:
Vlada [557]2 years ago
5 0

Answer:

It helps it not to break or crack. It is like an outer shell to protect it.

Explanation:

You might be interested in
3
Mashcka [7]

Answer:

It is 34

Explanation:

4 0
2 years ago
Which one is you fav one
serious [3.7K]

Answer:

the 3rd one

Explanation:

8 0
2 years ago
Read 2 more answers
24. 00 ml of a 0. 25 m naoh solution is titrated with 0. 10m hcl. What is the ph of the solution after 24. 00 ml of the hcl has
12345 [234]

pH of the solution after 24. 00 ml of the hcl has been added is 12.87

millimoles NaOH = mL x M = 24.00 mL x 0.25 M = 6.00

millimoles HCl = 24.00 mL x 0.10 M = 2.40

total volume = 48.00 mL

.................................NaOH + HCl ==>NaCl + H2O

initial.........................6.00.........0............0.........0

added.....................................2.40............................

change.................... -2.40......-2.40.........+2.40.... +2.40

equilibrium.................3.60.........0..............2.40.......2.40

The NaCl contributes nothing to the pH of the final solution. The pH is determined by the excess of NaOH present. (NaOH) = millimoles/mL = 3.60/48.00 = 0.075 M = (OH^-)

pOH = -log (OH^-). Then

pOH = -log (0.075)

pOH =1.1249

As we know,

pH + pOH = pKw = 14.00

pH=14-pOH

pH=14-1.1249

pH=12.87

<h3>What is pH?</h3>

pH is a logarithmic measure of an aqueous solution's hydrogen ion concentration. pH = -log[H+], where log is the base 10 logarithm and [H+] is the concentration of hydrogen ions in moles per liter.

The pH of an aqueous solution describes how acidic or basic it is, with a pH less than 7 being acidic and a pH greater than 7 being basic. A pH of 7 is regarded as neutral (e.g., pure water). pH values typically range from 0 to 14, though very strong acids may have a negative pH and very strong bases may have a pH greater than 14.

Learn more about pH:

brainly.com/question/491373

#SPJ4

7 0
1 year ago
What mass of NaCl would you have dilute to 1L to make up a 0.25M solution?<br> Asap please
gavmur [86]

Answer: 0.25m

Im not sure but i think

Explanation:0.25/0.25

3 0
3 years ago
The diagrams show gases that are stored in two separate but similar containers.
Nesterboy [21]

Answer: The diagrams show gases that are stored in two separate but similar containers. If both gases are at the same temperature, which one has the greater pressure? Gas 2 because it has more particles that are colliding.

Explanation:

8 0
3 years ago
Other questions:
  • Hydrangea plant's petals change to which colour on the addition of acids?
    11·1 answer
  • 1.257 m = ___ mm<br><br>fill in the blank or tell me how to convert it, I never wrote it down
    14·2 answers
  • A 0.04328 g sample of gas occupies 10.0-mL at 294.0 K and 1.10 atm. Upon further analysis, the compound is found to be 25.305% C
    6·1 answer
  • The most general level of classification is _A_ and the most specific level is _B_<br> A=?<br> B=?
    12·1 answer
  • 22)
    12·1 answer
  • A scientist has found a new drug that appears to provide weight loss in humans without dieting. The scientist has tested the dru
    8·1 answer
  • Which of these rocks forms from lava that cools very quickly?
    15·1 answer
  • 20 POINTS!!! PLS HELP ME
    13·2 answers
  • What is catalyst? Write its types.​
    5·2 answers
  • Please help me..!!!!!!!!!!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!