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
EastWind [94]
3 years ago
10

Is sand a element, compound or a mixture?

Chemistry
2 answers:
11111nata11111 [884]3 years ago
8 0
It would be a mixture:)))
Ainat [17]3 years ago
3 0

Answer:s  its  a mixture

Explanation:

You might be interested in
Medical implants and high-quality jewelry items for body piercing are frequently known by a trade name, G23Ti, which means "surg
mrs_skeptik [129]

Answer:

Ti6Al4V1 or Ti6Al4V

Explanation:

So, from the question above we are given the following Important data or parameters or information which is going to help us in solving this question and they are;

The "surgical-grade" titanium is made up of 64.3% titanium, 24.19% aluminum and 11.42% vanadium.

This is a stoichiometry Question so in order to be able to solve this question one must have the basic knowledge of stoichiometry, it is advisable that one revise it.

So, let us delve right into the solution of this question. Recall that, the formula for Calculating the number of moles = mass/molar mass.

Hence, the number of moles of titanium,Ti = 64.3/47.87 = 3 moles.

Also, the number of moles of aluminum = 24.19/26.98 = 0.8966

For vanadium; 11.42/51 = 0.22

The next step is to divide each number of moles component by the lowest number of mole, that is;

Ti = 1.34/ 0.22 = 6; Al = 0.8966/0.22= 4 and V = 0.22/0.22 = 1.

Thus, the emperical formula is = Ti6Al4V.

7 0
3 years ago
A certain reaction with an activation energy of 205 kj/mol was run at 485 k and again at 505 k . what is the ratio of f at the h
lapo4ka [179]
Arrhenius' Law relates activation energy, Ea, rate constant, K, and temperature, T as per this equation:

K (T) = A * e ^ (-Ea / RT), where R is the universal constant of gases and A is a constant which accounts for collision frequency..

Then you can find the ration between K's at two different temperatures as:

K1 = A * e ^ (-Ea / RT1)

K2 = A* e ^(-Ea / RT2)

=> K1 / K2 = e ^ { (-Ea / RT1) - Ea / RT2) }

=> K1 / K2 = e ^ {(-Ea/ R ) *( 1 / T1 - 1 T2) }

=> K1 / K2 = e^ { (-205,000 j/mol / 8.314 j/mol*k )* ( 1 / 505K - 1/ 485K) }

=> K1 / K2 = e ^ (2.0134494) ≈ 7.5

Answer: 7.5




8 0
3 years ago
Which choice is an example of a consumer? Question 9 options: tree fungi bee sun
xz_007 [3.2K]
The correct answer is C) Bee, any living thing, such as a bee, cannot make its own food therefor it is a consumer
3 0
3 years ago
Read 2 more answers
A mixture of helium, nitrogen and oxygen has a total pressure of 756 mmHg. The partial
Karolina [17]

Answer:

The  partial pressure of oxygen in the mixture is 296 mmHg.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone.

This relationship is due to the assumption that there are no attractive forces between the gases.

So, in this case, the total pressure is:

PT=Phelium + Pnitrogen + Poxygen

You know:

  • PT= 756 mmHg
  • Phelium= 122 mmHg
  • Pnitrogen= 338 mmHg
  • Poxygen= ?

Replacing:

756 mmHg= 122 mmHg + 338 mmHg + Poxygen

Solving:

756 mmHg - 122 mmHg - 338 mmHg = Poxygen

Poxygen= 296 mmHg

<u><em>The  partial pressure of oxygen in the mixture is 296 mmHg.</em></u>

6 0
3 years ago
A 3-column table with 4 rows. The first column labeled Scenario has entries A, B, C, D. The second column labeled Object 1 has e
Andrews [41]

Answer:

Scenario A: Toward object 1

Scenario B: Toward object 2

Scenario C: Toward object 1

Scenario D: Toward object 1

Explanation: I Just FInished the instruction on edjunueity, please consider giving me the branliest answer

Hope This Helps :)

5 0
3 years ago
Read 2 more answers
Other questions:
  • A flask holds 3.01 x 1023 molecules of carbon dioxide. The container is holding ________
    6·1 answer
  • What is NADPH2 ? where is it used?
    13·1 answer
  • Rank these molecules or groups of molecules by when mammals use them as fuel, from right after a meal through only during starva
    11·1 answer
  • Which statement is true about elements in a period on the periodic table?
    5·2 answers
  • What is the best way to package and preserve a questioned document?
    7·2 answers
  • I need help please. It’s really urgent . thank you
    5·1 answer
  • M= 2 kg, a = 2 m/s^2. <br><br> Find F
    13·1 answer
  • Lithium, sodium and potassium are all in group 1 of the periodic table. Which of these has the lowest boiling point?
    10·1 answer
  • the _ of an element is the average mass of an element naturally occurring atom, or isotopes,taking into account the _ of each is
    12·1 answer
  • Plz draw a periodic table with all its information​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!