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
Goryan [66]
4 years ago
8

Which one could be considered pure substances? And why

Chemistry
2 answers:
ladessa [460]4 years ago
8 0
I think it oxygen cuz water has two substance which is H2O
Sergeu [11.5K]4 years ago
6 0
I think it would be water but im not sure! Hope that helps!!
You might be interested in
Most Bic lighters hold 5.0ml of liquified butane (density = 0.60 g/ml). Calculate the minimum size container you would need to "
Hatshy [7]

Answer:

Volume of container = 0.0012 m³ or 1.2 L or 1200 ml

Explanation:

Volume of butane = 5.0 ml

density = 0.60 g/ml

Room temperature (T) = 293.15 K

Normal pressure (P) = 1 atm = 101,325 pa

Ideal gas constant (R) = 8.3145 J/mole.K)

volume of container V = ?

Solution

To find out the volume of container we use ideal gas equation

PV = nRT

P = pressure

V = volume

n = number of moles

R = gas constant

T = temperature

First we find out number of moles

<em>As Mass = density × volume</em>

mass of butane = 0.60 g/ml ×5.0 ml

mass of butane = 3 g

now find out number of moles (n)

n = mass / molar mass

n = 3 g / 58.12 g/mol

n = 0.05 mol

Now put all values in ideal gas equation

<em>PV = nRt</em>

<em>V = nRT/P</em>

V = (0.05 mol × 8.3145 J/mol.K × 293.15 K) ÷ 101,325 pa

V = 121.87 ÷ 101,325 pa

V = 0.0012 m³ OR 1.2 L OR 1200 ml

8 0
4 years ago
What is the vapor pressure in equilibrium with when the substance has reached its boiling point
S_A_V [24]

Answer:

The boiling point of a liquid is the temperature at which its vapor pressure is equal to the pressure of the gas above it.The normal boiling point of a liquid is the temperature at which its vapor pressure is equal to one atmosphere (760 torr). Microscopic view inside a bubble in boiling water.

Explanation:

8 0
3 years ago
What is thermal energy?
True [87]

good sir it seems your answer appears to be B

8 0
2 years ago
Which statement is correct? (
Ronch [10]
A is correct. If an atom has more protons than electrons it is positively charged, if more electrons than protons it is negatively charged. An equal number of each will make it neutral
5 0
3 years ago
Write out the BALANCED NET IONIC equation for the neutralization reaction that occurs between aqueous phosphoric acid and aqueou
ladessa [460]

Answer: Balanced net ionic equation is 3H^{+}(aq)+3OH^{-}(aq)\rightarrow 3H_2O(l)

Explanation:

Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

H_3PO_4(aq)+3NaOH(aq)\rightarrow Na_3PO_4(aq)+3H_2O(l)

The ions which are present on both the sides of the equation are sodium and phosphate ions and hence are not involved in net ionic equation is:

3H^{+}(aq)+3OH^{-}(aq)\rightarrow 3H_2O(l)

8 0
3 years ago
Other questions:
  • All of the following are true of carbon except which of the following?
    12·1 answer
  • How many molecules are in 3.0 moles of O2
    9·1 answer
  • What happens when nacl(s) is dissolved in water??
    8·2 answers
  • Compare suspension and emulsion polymerizations. Describe the microscopic environment of each process shows where the monomer, i
    5·1 answer
  • Why do silver accessories turn black when exposed to air?
    14·1 answer
  • Which of these solutes raises the boiling point of water the most?
    6·1 answer
  • Consider the temperature versus time graph below. I which region is the substance in both the solid phase and the liquid phase?
    14·2 answers
  • Many organisms on Earth exhibit similar ____________.
    6·2 answers
  • What is the molarity of a solution containing 2 moles of sodium hydroxide (NaOH) dissolved in 4.0 L of solution?
    5·1 answer
  • Why does the surface of the oocyte change when the first sperm cell touches the oocyte?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!