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
Anika [276]
3 years ago
5

Something made of all one material

Chemistry
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

element

Explanation:

an element is something made up of only one type of atom

You might be interested in
A) How many grams of Cu(OH)2will precipitate when excess NaOH solution is added to 42.0mL of 0.641 M CuI2 solution?
Dmitriy789 [7]
The answer would possibly be 25g
6 0
2 years ago
Show all calulations
Black_prince [1.1K]
Im confused here. Add the rest of the question for me to help you
5 0
2 years ago
Dmitri Mendeleev's Periodic Law states that chemical and physical properties repeat themselves in groups of _____. A. 4 B. 8 C.
krok68 [10]
<span>Dmitri Mendeleev's Periodic Law states that chemical and physical properties repeat themselves in groups of 8.</span>
6 0
3 years ago
Read 2 more answers
171 g of sucrose ( MW of 342, melting point 186 oC, boiling point very high, and vapor pressure is negligible) is dissolved in o
Fantom [35]

The complete question is as follows: 171 g of sucrose ( MW of 342, melting point 186 oC, boiling point very high, and vapor pressure is negligible) is dissolved in one liter of water at 25 oC. At 25 oC the vapor pressure of water is 24 mmHg. Which value is closest to the vapor pressure (VP) of this solution at 25 oC?

a. 16mm Hg

b. 24mm Hg  

c. 20mm Hg  

d. 12mm Hg

Answer: The vapor pressure (VP) of this solution at 25^{o}C is closest to the value 24 mm Hg.

Explanation:

Given: Mass of sucrose = 171 g

Mass of water = 1 L = 1000 g

Vapor pressure of water = 24 mm Hg

As moles is the mass of substance divided by its molar mass. Hence, moles of water (molar mass = 18.02 g) is calculated as follows.

Moles = \frac{mass}{molar mass}\\= \frac{1000 g}{18.02 g/mol}\\= 55.49 mol

Similarly, moles of sucrose (molar mass = 342 g/mol) is as follows.

Moles = \frac{mass}{molar mass}\\= \frac{171 g}{342 g/mol}\\= 0.5 mol

Total moles = 55.49 + 0.5 mol = 55.99 mol

Mole fraction of water is as follows.

Mole fraction = \frac{moles of water}{total moles}\\= \frac{55.49}{55.99}\\= 0.99

Formula used to calculate vapor pressure of the solution is as follows.

P_{i} = P^{o}_{i} \times \chi_{i}

where,

P_{i} = vapor pressure of component i over the solution

P^{o}_{i} = vapor pressure of pure component i

\chi_{i} = mole fraction of i

Substitute the values into above formula to calculate vapor pressure of water as follows.

P_{i} = P^{o}_{i} \times \chi_{i}\\= 24 mm Hg \times 0.99\\= 23.76 \\or 24 mm Hg\\

Thus, we can conclude that the vapor pressure (VP) of this solution at 25^{o}C is closest to the value 24 mm Hg.

4 0
3 years ago
How would you characterize a liquid?
Naya [18.7K]

Answer:

The correct answer is D!

Explanation:

Liquids have a fixed shape and fixed volume. Liquids take the shape of their containers. Hope you have a great dayy!

6 0
3 years ago
Other questions:
  • 3. Give three examples of how microorganisms might demonstrate the characteristics of life
    12·2 answers
  • How many valence electrons does nickel (Ni) have?
    14·2 answers
  • Is mass conserved when 40 G of sodium hydroxide undergoes a chemical change during an interaction with 36.5 grams of hydrogen ch
    7·1 answer
  • Which of the following methods uses the decay of atomic particles in an object to find its exact age? A. Fossil dating B. Geolog
    11·1 answer
  • Why will heat travel faster in solids than in liquids
    6·1 answer
  • Indicate whether the substance exists in aqueous solution (a) entirely in molecular form, (b) entirely as ions, (c) or as a mixt
    15·1 answer
  • Which element is depicted from this orbital diagram? A NA N 3p 35 Increasing Energy A NA A 2p 2s 11 1s O Fluorine O Chlorine O N
    5·1 answer
  • How do plate tectonics affect mountains?
    7·2 answers
  • What mass in grams of PCl5 will be produced from 0.25 moles of PCl3 and excess chlorine gas?
    7·1 answer
  • when glycerol reacts with three different fatty acids, how many stereogenic centers does the product triacylglycerol contain?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!