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
oksian1 [2.3K]
2 years ago
14

A standard hydrogen atom has how many neutrons? A. 2B. 0C. 1D. 3​

Chemistry
1 answer:
hoa [83]2 years ago
3 0

Answer:

0

Explanation:

standard hydrogen is considered to be protium isotope of hydrogen that has one electron revolving around the nucleus containing one proton and no neutrons.

it's atomic number and mass number is 1

and number of neutrons = mass no. - atomic no.

= 1 - 1

=0

You might be interested in
. the density (d) of a substance is an intensive property that is defined as the ratio of its mass (m) to its volume (v). densit
ale4655 [162]

Density is intensive because it is the ratio of two extensive properties that is mass to volume.

<h3>What is Density ?</h3>

Density is defined as mass per unit volume. S.I unit if density is kg/m³.

It is expressed as

Density = \frac{\text{Mass}}{\text{Volume}}  or d = \frac{m}{V}

<h3>What is Intensive Property ? </h3>

Intensive property is the property which does not depend on the size of the system. Intensive property can be easily identified. Intensive property is the independent property. The size does not change in this.

Example of intensive property are Density, Freezing point, melting point, colour, Lustre, etc.  

<h3>What is Extensive property ?</h3>

Extensive property is the property which depend on the substance. Extensive property cannot be easily identified.

Example of extensive property length, weight, volume, mass etc.

Thus from the above conclusion we can say that Density is intensive because it is the ratio of two extensive properties that is mass to volume.

Learn more about Density here: brainly.com/question/1354972

#SPJ4

Disclaimer: The given question is incomplete on the portal. Here is the complete question.

Question: The density (d) of a substance is an intensive property that is defined as the ratio of its mass (m) to its volume (v)

density = \frac{\text{Mass}}{\text{Volume}}  or d = \frac{m}{V}

Considering that mass and volume are both extensive properties, explain why their ratio, density is intensive.

5 0
2 years ago
What does a student need to know about double bonds and triple bonds when predicting molecular geometry of molecules?
zhuklara [117]

This problem is asking for an explanation of what we need to know about double and triple bonds to successfully predict molecular geometries in molecules. At the end, one comes to the conclusion that double and triple bonds contribute to the degree in which an atom is bonded and they also determine the lone pairs, which, at the same time,  define the molecular geometry.

<h3>Molecular geometry:</h3>

In chemistry, molecules are not necessarily flat arrangements of atoms, yet they have specific bond angles, orientations and shapes, which define the molecular geometry. In such a way, we can use the VSEPR theory in order to know the molecular geometry of a molecule; however, we first need its Lewis structure or at least the number and type of bonds to do so.

Consider water and carbon dioxide; the former has two hydrogen to oxygen bonds (O-H) and 2 lone pairs because O has six valence electrons but just 2 are bonded to complete the octet, so 4 unpaired electrons lead to two lone pairs. On the other hand, the latter has two double bonds (C=O) and 0 lone pairs because carbon has four valence electrons and they are all bonded to complete the octet.

In such a way, one can see how the double bond affected the bonding in CO2 in contrast to the H2O; situation that also applies to triple bonds, because CO2 has a linear molecular geometry whereas water has a bent one (see attached picture)

Hence, one comes to the conclusion that double and triple bonds contribute to the degree in which an atom is bonded and they also determine the lone pairs, which, at the same time, define the molecular geometry.

Learn more about molecular geometry: brainly.com/question/7558603

Learn more about the VSEPR theory:  brainly.com/question/14225705

5 0
2 years ago
The concentration of pb2+ in a commercially available standard solution is 1.00 mg/ml. what volume of this solution should be di
Vanyuwa [196]
<span>The concentration of pb2+ = 1.00mg/ml Diluted Solution is 6.0 x 102 ml = 612 ml Volume of the concentration of pb2+ is 0.054 mg/l is v (vL)(1.00mg/ml) = (.612L)(0.054mg/l) Volume = 0.033048L Volume of the concentration of pb2+ is 0.054 mg/l = 33.048 ml.</span>
3 0
2 years ago
For the reaction 2A + 4B ----&gt; 2C + 2D, at a particular instant in time, the rate of the reaction is 0.0352 M/s. What is the
viva [34]

Explanation:

The given chemical equation is:

2A + 4B -> 2C + 2D

The rate of the reaction is 0.0352 M/s.

During the course of the reaction, the rate of reactants decreases, and the rate of products increases.

The rate of disappearance of B is shown below:

rate=-\frac{1}{4} \frac{d[B]}{dt}

So, rate of change of B is :

rate of change of B =- rate * 4\\=-0.0352 M/s * 4\\=-0.1408M/s\\\\=-0.141M/s

Option C.

6 0
2 years ago
The following balanced equation shows the formation of sulfur dioxide.
AlexFokin [52]

actually the answer is C. 15.0 on ed

6 0
3 years ago
Read 2 more answers
Other questions:
  • The Earth’s atmosphere contains about 0.04% (or 400 parts per million) carbon dioxide. Although most of the carbon dioxide is in
    9·1 answer
  • I can't find the density of this question I need help
    13·1 answer
  • Because antigen receptor genes are randomly rearranged, some immature lymphocytes produce receptors specific for epitopes on the
    9·1 answer
  • Is cyclohexanol an alkane, alkene, or an alcohol?
    5·1 answer
  • How many milliners of hydrogen gas ar produced by the reaction 0.020 moles of magnesium with excess of hydrochloride acid at sto
    6·1 answer
  • Two methods can be used to determine the rate law for a reaction. One is a graphical method used to determine the integrated rat
    6·1 answer
  • Behavioral therapy began with _______________.
    11·1 answer
  • How many mL of 8.00M HCl solution are needed to make a dilution with a final volume of 2,500.ml, and a
    10·1 answer
  • Father, I come to you worn and weary from the hard times I have walked through recently. I come to you seeking your shelter wher
    7·2 answers
  • The video states that in order to use the triangulation method needs a certain number of seismograph stations. How many stations
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!