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
Komok [63]
3 years ago
6

water H2O is made up of different elements hydrogen and oxygen is this type of combination of mixture or a pure substance

Chemistry
2 answers:
aivan3 [116]3 years ago
8 0

H2O is a compound it cannot be a pure substance

leonid [27]3 years ago
4 0

<u>Answer:</u> The given compound (water) is a pure substance

<u>Explanation:</u>

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass.

Compounds and elements are considered as pure substances

A mixture is defined as the substance which is made by mixing two or more substances in any ratio.  They can be separated by physical means.

Water (H_2O) is formed by the combination of hydrogen and oxygen elements in z fixed ratio of 1 : 8 by mass. Therefore, it is considered as a compound.

Hence, the given compound (water) is a pure substance

You might be interested in
What is the vapor pressure (in mm Hg) of a solution of 17.5 g of glucose (C6H12O6) in 82.0 g of methanol (CH3OH) at 27∘C? The va
vichka [17]

Answer:

134.8 mmHg is the vapor pressure for solution

Explanation:

We must apply the colligative property of lowering vapor pressure, which formula is: P° - P' = P° . Xm

P° → Vapor pressure of pure solvent

P' → Vapor pressure of solution

Xm → Mole fraction for solute

Let's determine the moles of solute and solvent

17.5 g . 1 mol/180 g = 0.0972 moles

82 g . 1mol / 32 g = 2.56 moles

Total moles → moles of solute + moles of solvent → 2.56 + 0.0972 = 2.6572 moles

Xm → moles of solute / total moles = 0.0972 / 2.6572 = 0.0365

We replace the data in the formula

140 mmHg - P' = 140 mmHg . 0.0365

P' = - (140 mmHg . 0.0365 - 140mmHg)

P' = 134.8 mmHg

5 0
3 years ago
The nucleus of isotope A of an element has a larger mass than isotope B of the same elemen
konstantin123 [22]

Answer:

B

Explanation:

since isotopeA has bigger mass number

7 0
3 years ago
Q1.
dlinn [17]

Answer:

there are four peaks in the 13c NMR (B)

3 0
3 years ago
Why is it commonly believed that carbon dioxide is responsible for global warming? Select 2 options.
monitta

Answer:

Carbon dioxide levels in the Earth's atmosphere have been steadily increasing.

Carbon has a longer average lifetime in the atmosphere.

Explanation:

Today the level of carbon dioxide is higher than at any time in human history. Scientists widely agree that Earth’s average surface temperature has already increased by about 2 F (1 C) since the 1880s, and that human-caused increases in carbon dioxide and other heat-trapping gases are extremely likely to be responsible.

The lifetime in the air of CO2, the most significant man-made greenhouse gas, is probably the most difficult to determine, because there are several processes that remove carbon dioxide from the atmosphere. Between 65% and 80% of CO2 released into the air dissolves into the ocean over a period of 20–200 years.

6 0
3 years ago
Read 2 more answers
What does climate change have to do with glacial change ​
qwelly [4]

Answer:

Because glaciers are so sensitive to temperature fluctuations accompanying climate change. so if it gets hotter then the ice glaciers will melt.

Explanation:

3 0
3 years ago
Other questions:
  • A solution is prepared from 8 grams of acetic acid (CH2CO2H) and 725 grams of water. What is the molarity of this solution?
    8·2 answers
  • What kelvin temperature is equivalent to 35 degrees Celsius?
    15·1 answer
  • If nitrogen and hydrogen combine in a synthesis reaction, what would the product of the reaction be? n2 + 3h2 → 3
    5·2 answers
  • What volume of a 0.580-m solution of cacl2 contains 1.28 g solute?
    12·1 answer
  • Lewis structure of SeO3
    13·1 answer
  • Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. how many neutrons does nitrogen have?
    9·2 answers
  • A _______ is a segment of DNA that contains the information necessary to express the inherited traits of an organism. A. protein
    8·1 answer
  • The time it takes for a celestial body to make one complete turn on its axis is a(n)
    6·1 answer
  • Which radioactive waste can be stored for decay and then safely released into the environment?
    11·1 answer
  • Which of the following is a correct statement regarding the free energy?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!