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
guajiro [1.7K]
3 years ago
11

How many moles are in 23.5 g of H20?​

Chemistry
1 answer:
Lorico [155]3 years ago
7 0

Answer:

2.63g

This means that every mole of water molecules will contain 2 moles of hydrogen and 1 mole of oxygen atoms.

To find the percent composition of hydrogen in water, use the molar mass of water and that of hydrogen

2×1.00794g/mol18.0153g/mol×100=11.19%

This means that every 100 g of water will contain a total of 11.19 g of hydrogen. Since your sample has a mass of 23.5 g, it follows that it will contain

23.5g water⋅11.19 g H100g water=2.63 g H

You might be interested in
Classify the following as either an element, compound, homogeneous mixture or
masya89 [10]

Answer:

<h2>Heterogeneous</h2>

Explanation:

<h3><em>Milk </em><em>seems</em><em> to</em><em> be</em><em> </em><em>homogeneous</em><em> mixture</em><em> </em><em>but </em><em>actually</em><em> </em><em>milk </em><em>is </em><em>a </em><em>heterogeneous</em><em> </em><em>mixture</em><em> </em><em>and </em><em>a </em><em>colloid</em><em> </em><em>solution</em><em>.</em></h3>
8 0
3 years ago
What is the name of Bel on the periodic table
rewona [7]

Answer:

Nobelium or Beryllium

4 0
3 years ago
What volume of lead (of density 11.3 g/cm3 ) has the same mass as 395 cm3 of a piece of redwood (of density 0.38 g/cm3 )? Answer
Zepler [3.9K]
d_{1}=\frac{m}{V_{1}}\\\\&#10;V_{1}=395cm^{3}\\&#10;d_{1}=0,38\frac{g}{cm^{3}} \ \ \ \ \Rightarrow \ \ \ \ m=395cm^{3}*0,38\frac{g}{cm^{3}}=150,1g\\\\\\&#10;d_{2}=\frac{m}{V_{2}}\\\\&#10;m=150,1g\\&#10;d_{2}=11,3\frac{g}{cm^{3}} \ \ \ \ \Rightarrow \ \ \ \ V_{2}=\frac{150,1g}{11,3\frac{g}{cm^{3}}}\approx13,28cm^{3}
8 0
4 years ago
When we celebrate a new year we are really celebrating what?
Afina-wow [57]
We are celebrating a fresh start to another year
4 0
3 years ago
Indicate the number of significant figures in the measured number 0.0020 <br> A. 4<br> B. 5<br> C. 2
Sergio [31]

<u>Answer:</u>

The correct answer option is C. 2.

<u>Explanation:</u>

We are given the number '0.0020' and we are to indicate the number of significant figures in the given measured number.

According to the rules of significant figures, numbers that are non-zero, zeros between any two significant numbers and the ending zeros in the decimal position are categorized as significant figures.

Since there is one non-zero number and one ending zero in the decimal position, therefore 0.0020 has 2 significant figures.

6 0
3 years ago
Other questions:
  • A chemist prepares a sample of helium gas at a certain pressure, temperature and volume and then removes all but a fourth of the
    13·1 answer
  • What mass of cl2 is required for the complete reaction
    13·1 answer
  • I need to know how to do number 1. If you can please show the work so I can try to understand it. Thanks!!
    12·1 answer
  • Is mud a suspension, solution, or colloid?
    6·2 answers
  • What is the oxidation state for a Mn atom?<br> (1) 0 (2) +7 (3) +3 (4) +4
    10·1 answer
  • How many ml of 0.15 M NaOH are required to neutralize 50ml of 2.2 M HC1? ​
    9·1 answer
  • For the separation of components of a mixture, we are following different methods. What is the condition in which the process of
    8·1 answer
  • What is Hydroelectricity?​
    14·2 answers
  • What is an orbital????
    11·1 answer
  • Which of the following molecules is nonpolar?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!