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
Furkat [3]
2 years ago
15

Sixty-five percent of the mass of bone is a compound called hydroxyapatite. sixty-five percent of the mass of bone is a compound

called hydroxyapatite.
a. True
b. False
Chemistry
1 answer:
mafiozo [28]2 years ago
5 0
True. Its simple how i remeberd was the bone has 650,000 cells and the bone has 65% hydroxyapatite
You might be interested in
A 1M solution is made of each item in a pair. When would this combination create a buffer? Chose the pairs below that you could
monitta

Answer:

b. HCOOH/ NaHCOO.

Explanation:

A buffer system may be formed in one of two forms:

  • A weak acid with its conjugate base.
  • A weak base with its conjugate acid.

Chose the pairs below that you could use to make a buffered solution.

a. HCI/NaOH. NO. HCl is a strong acid and NaOH is a strong base.

b. HCOOH/ NaHCOO. YES. HCOOH is a weak acid and HCOO⁻ (coming from NaHCOO) is its conjugate base.

c. HNO₂/H₂SO₃. NO. Both are acids and they are unrelated to each other.

d. NaNO₃/ HNO₃. NO. HNO₃ is a strong acid.

7 0
2 years ago
(GIVING BRAINLIEST)Match the type of chemical bond with the best description:
Kipish [7]

Answer:

A and 3

B and 2

C and 1

Explanation:

<em>Ion</em>ic bonding is the transfer of electrons from a cat<em>ion</em> to an an<em>ion</em>.

Covalent bonding is the sharing of electrons between nonmetal atoms.

<em>Metallic</em> bonding is the sea of electrons <em>metal </em>cations.

Hope this helped!

8 0
2 years ago
Stirring a liquid while you are mixing in another ingredient speeds up the rate of dissolving. Question 13 options: True False
brilliants [131]

Answer:

true

Explanation:

This is because it helps distribute the particles that are being dissolved. 

8 0
2 years ago
Read 2 more answers
(f) Which of the following alkenes is the major product when 2-bromo-2-methylpentane is treated with sodium ethoxide in ethanol?
belka [17]

Answer:

D) 2-methylpent-2-ene

Explanation:

This is an elimination reaction of Halogenoalkane. 2-bromo-2-methylpentane when is heated with NaOH or NaOC2O5( sodium ethoxide) in ethanol will form alkene rather than alcohol.

2-methylpent-1-ene is minor product since double bond form with secondary Carbon rather than primary Carbon.

8 0
3 years ago
Read 2 more answers
Which reaction below occurs spontaneously upon mixing the reagents shown?
den301095 [7]
Co2 is correct buddy
3 0
3 years ago
Other questions:
  • Which of the following would be a warning sign that information about a weight loss medication is not reliable science?
    8·2 answers
  • if a copper acetate hydrate, Cux(C2H3O2)y zH2O compound is found to contain 31.82% Copper, 59.14% acetate,and the remainder is w
    5·1 answer
  • Which of the following is an example of a behavioral adaptation
    7·2 answers
  • what volume of ethylene gas at 293K and 102kPa must be compressed to yield 295m3 of ethylene gas at 808kPa and 585K​
    14·1 answer
  • A student performing this experiment weights out 0.6680 grams of an antacid tablet. It is was determined that this tablet contai
    8·1 answer
  • Three samples of wood with the same volume were weighed. Sample A has a mass of 224.96 g, sample B has a mass of 0.55632 Ibs, an
    5·1 answer
  • HELPPPPPPPPPPP???????
    10·1 answer
  • In order to use the Ideal Gas Constant of 0.0821, what units must be used for volume, pressure, amount, and temperature?
    10·1 answer
  • Convert 4.8 moles of calcium carbonate to<br> particles.
    15·1 answer
  • In an experiment, the same mass of magnesium metal reacted with the same amount of two different acids. the acid used in reactio
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!