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
Pachacha [2.7K]
3 years ago
5

Which of the following is a pure substance? brass sodium rocks steel

Chemistry
2 answers:
Vlada [557]3 years ago
6 0

its sodium, i got it right on a quiz :)

Misha Larkins [42]3 years ago
3 0
Homogeneous mixture<span>steel

</span>element<span>sodium


</span>mixture, homogeneous<span>brass



</span>
You might be interested in
A flexible container at an initial volume of 6.13 L contains 6.51 mol of gas. More gas is then added to the container until it r
aivan3 [116]

Answer:

the final mole of the flexible container = 12.92 moles

Explanation:

Given that :

initial volume of a flexible container = 6.13 L

initial mole of a flexible container = 6.51 mol

final volume of a flexible container = 18.3 L

final mole of a flexible container = ???

Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.

Therefore,

n= \dfrac{V_2*n_1}{V_1}

n= \dfrac{18.3*6.51}{6.13}

n = 19.43

n=n_1+n_2

19.43 = 6.51 + n₂

n₂ = 19.43 - 6.51

n₂ = 12.92 moles

Thus; the final mole of the flexible container = 12.92 moles

6 0
3 years ago
The respiratory system is what brings in food and breaks it down True or false
Gala2k [10]

Answer:

false

Explanation:

the respiratory system includes the lungs and heart

not food

5 0
2 years ago
What size volumetric flask would you use to create a 0.50 M<br> solution using 10.00 g of CaBr2
SIZIF [17.4K]

Answer:

Explanation:

First convert the grams of Calcium Bromide to moles by using the atomic weight. Then use the formula for molarity, which is moles per liter.

CaBr2 = 199.9 g/mol

10/199.9 = 0.05 moles of CaBr2

0.5M=\frac{0.05mol}{x}

x = 0.1L or 100mL

5 0
2 years ago
A gas at constant temperature is enclosed in a container with a movable piston. It occupies a space of 10L at a pressure of 500
Liula [17]

Answer:

4.17L

Explanation:

V1 = 10L

V2 =?

P1 = 500torr

P2 = 1200torr

Boyle's law states that at constant temperature, the volume of a gas is inversely proportional to its pressure.

P1V1 = P2V2

V2 = ( P1 * V1 ) / P2

V2 = 4.17L

The new volume of the gas is 4.17L

8 0
3 years ago
If you toward the right of the periodic table is it harder or easier to remove valence electrons?​
attashe74 [19]

Answer:

harder

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Classify the following reaction:2h2o 2h2 o2
    9·2 answers
  • Part b - the effect of an electric field (voltage) on a negatively charged oil droplet in the millikan oil droplet experiment, t
    9·1 answer
  • What is the equilibrium constant for the following reaction? <br> 3A + 2B &lt;---&gt; 2C
    9·2 answers
  • Are eye drops a base or acid???
    14·1 answer
  • What is the net ionic equation for the reaction of solid iron with aqueous copper sulfate? (Hint: First use the activity series
    14·1 answer
  • Given the coefficients of the balanced equation, the enthalpy of the reaction can be expressed in terms of the amount of ammonia
    10·1 answer
  • What is classification? write its two importance. In chemistry
    8·1 answer
  • 18. Investigue por qué en el bloque "d" se aplica la fórmula n-1 y en el bloque "f" n-2.​
    5·1 answer
  • How is heat transferred through radiation?
    15·1 answer
  • Using your knowledge of properties of matter, choose the correct description: Question 3 options: physical prop. are luster, col
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!