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
Rashid [163]
2 years ago
9

Is concrete a compound element or mixture?

Chemistry
1 answer:
alisha [4.7K]2 years ago
5 0
Concrete is a mixture. 
You might be interested in
Choose the best explanation for chemical reactions not to produce radioactive particles.
amid [387]
"Only electrons are involved in chemical reactions" is the statement among the following choices given in the question that is the <span>best explanation for chemical reactions not to produce radioactive particles. The correct option among all the options that are given in the question is the third option or option "C". </span>
4 0
2 years ago
Read 2 more answers
A student wants to investigate abiotic factors that affect tomato plants.
Julli [10]
Since abiotic is a non living factor B would be the answer because water is abiotic
3 0
2 years ago
The allotropic form of a non – metal is a good conductor of electricity. Name the nonmetal.
SashulF [63]

Answer:

carbon with graphite as the allotrope

8 0
2 years ago
Part 1: What is the final volume in milliliters when 0.730 L of a 44.8 % (m/v) solution is diluted to 23.3 % (m/v)?
Andre45 [30]

part 1 : the final volume : 1.404 L

part 2 : the initial concentration : 4.06 M

<h3>Further explanation </h3>

Dilution is the process of adding a solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

M₁V₁=M₂V₂

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

part 1 :

M₁=44.8%

V₁=0.73 L

M₂=23.3%

\tt V_2=\dfrac{M_1.V_1}{M_2}\\\\V_2=\dfrac{44.8\times 0.73}{23.3}\\\\V_2=1.404~L

part 2 :

V₁=739 ml=0.739 L

V₂=1.5 L

M₂=2

\tt M_1=\dfrac{M_2.V_2}{V_1}\\\\M_1=\dfrac{2\times 1.5}{0.739}\\\\M_1=4.06

6 0
3 years ago
A sample of methane gas has a volume of 10 l at a pressure of 1.5 atm and a temperature of 20 °c. what volume does the gas occup
a_sh-v [17]
We can use combined gas laws to solve for the volume of the gas
 \frac{PV}{T}
where P - pressure, V - volume , T - temperature and k - constant
\frac{P1V1}{T1} = \frac{P2V2}{T2}
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
T1 - temperature in Kelvin - 20 °C + 273 = 293 K
T2 - 40 °C + 273 = 313 K
substituting the values 
\frac{1.5 atm*10L}{293 K} =  \frac{0.9 atm*V}{313K}
V = 17.8 L
volume of the gas is 17.8 L 
7 0
3 years ago
Other questions:
  • List 3 ways the periodic table is useful<br> Help!
    12·2 answers
  • The gas in the piston is being heated, and the piston has moved upward. The observation will be summarized in a row of the incom
    7·2 answers
  • Identify the element in C6H12O6 that allows it to be classified as an organic compound.
    12·1 answer
  • What happens when a chemical is determined to be dangerous?
    6·1 answer
  • The type of response when a plant moves away from the stimulus
    8·1 answer
  • Calculate the pOH of this solution. pH = 1.90 pOH =
    14·2 answers
  • A student pours ammonium nitrate into a container of room temperature water. The student stirs the mixture with a stirring rod a
    5·2 answers
  • A sample of radioactive waste has a half-live of 40 years and an activity level of 4 curies. After how many years will the activ
    9·1 answer
  • Characteristic ions of water: OH- and H3O+​
    11·1 answer
  • Acid-catalyzed dehydration of 3,3-dimethyl-2-butanol gives three alkenes: 2,3-dimethyl-2-butene, 3,3-dimethyl-1-butene, and 2,3-
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!