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
jeka57 [31]
3 years ago
6

On the island of Hawaii, Keanu notices that the sand on the beach is black, the same color as the rock formations on the island.

Keanu realizes the sand used to be part of the rock formations. How did material from the rock formations turn into sand?
a

Rays from the sun shone down on the rock, and it broke into pieces.



b

If anything were left out for a long time, it would break into small pieces.



c


The sand was formed by earthquakes, tsunamis, and other natural disasters. These disasters were strong enough to break the rock into small pieces.


d

Wind and rain interacted with the rock, breaking it into small pieces.
Chemistry
1 answer:
qwelly [4]3 years ago
5 0

Answer:

D

Explanation:

Rocks turn into sand through heat, wind, and water. D is the most plausible in this situation since it takes time to break them down into sand.

You might be interested in
Which of these is true about the mantle?
yanalaym [24]

Answer:

c.

Explanation:

it moves in slow convection currents, hope this helps!

6 0
3 years ago
3. A diamond contains 0.090 moles of carbon What is the mass of the diamond?
Nady [450]

Answer:

1.0809

Explanation:

3 0
3 years ago
This man is using a block and tackle to lift a heavy bale of cotton. the block and tackle contains which simple machine?
AlladinOne [14]
The simple machine used is called atwood machine. 
8 0
3 years ago
Concentrated 8.2 of commercial chloride or chlorox diluted to 14% ?
ELEN [110]
Is it 8.06?

Or 58.57?

Don't get mad if there wrong!!
But please let me know if it's right or wrong tho.
7 0
3 years ago
A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The compone
AysviL [449]

Answer:

0,07448M of phosphate buffer

Explanation:

sodium monohydrogenphosphate (Na₂HP) and sodium dihydrogenphosphate (NaH₂P) react with HCl thus:

Na₂HP + HCl ⇄ NaH₂P + NaCl <em>(1)</em>

NaH₂P + HCl ⇄ H₃P + NaCl <em>(2)</em>

The first endpoint is due the reaction (1), When all phosphate buffer is as NaH₂P form, begins the second reaction. That means that the second endpoint is due the total concentration of phosphate that is obtained thus:

0,01862L of HCl×\frac{0,1000mol}{L}= 1,862x10⁻³moles of HCl ≡ moles of phosphate buffer.

The concentration is:

\frac{1,862x10^{-3}moles}{0,02500L} = <em>0,07448M of phosphate buffer</em>

<em></em>

I hope it helps!

7 0
3 years ago
Other questions:
  • Convert -230,000J to kJ
    12·1 answer
  • I don’t understand how to find these please help
    13·1 answer
  • What are the components of an electromagnet and how do they get connected?
    6·2 answers
  • How many electrons does fluorine have? How many electron shells? How many electrons are needed to fill the valence shell?
    8·1 answer
  • When a scientific theory has been tested and proved by the scientific community, it
    10·2 answers
  • Plz help me plz I am timed!!
    10·2 answers
  • BRAINILY ANSWER NOW OLEASE I NEED HELP
    13·2 answers
  • The magnifying power of a telescope is computed by dividing the focal length of its objective by _______.
    6·1 answer
  • HELP FAST! PLEASE <br> This is due in 4 hrs!!!!! Ahhhh
    11·1 answer
  • Which section of the ocean floor is near the coastline of all continents?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!