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
Anastasy [175]
2 years ago
7

3. In a neutral atom, this element has an atomic mass of 23 AMU and has 11 protons.

Chemistry
1 answer:
notka56 [123]2 years ago
4 0

The element in question is Sodium

An atomic mass unit is defined as 1/12 th of the mass of carbon-12 atom.

The mass of an atom is mainly due to its protons and neutrons in the nucleus.

Weight of a proton is 1.6 x 10^-27 kg

Weight of a neutron is 1.6 x 10^-27kg

However weight of an electron is 9 x 10^-31kg and hence is negligible in calculation of amu

It is given that weight is 23 AMU and number of protons is 11

The protons in a nucleus also act as atomic number of the periodic table

Proton number 11 is the atomic number of Sodium

Hence the element is Sodium

For further reference:

brainly.com/question/13668134?referrer=searchResults

#SPJ9

You might be interested in
Give the product of the reaction of excess benzene (2 equivalents) with dichloromethane and alcl3.
SOVA2 [1]
Hello!

The product of the reaction of excess benzene with dichloromethane is diphenylmethane. 

The reaction that benzene undergoes with dichloromethane is a Friedel-Crafts Alkylation, in which firstly Benzene is alkylated to Benzyl Chloride, and after that, the Benzyl Chloride reacts with another equivalent of Benzene to form the compound Diphenylmethane. The Reaction Scheme is shown in the image below:

Have a nice day!

5 0
3 years ago
Two separate masses of zinc were measured on a laboratory balance. The first zinc had a sample mass of 210.10g, and the second z
wlad13 [49]

Answer:

Density is  7.15 g /mL.

Mass is  445.2 g.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

Mass of first zinc sample = 210.10 g

Mass of second zinc sample = 235.10 g

Combined volume = 62.3 mL

Density of combined sample ?

Mass of combined sample = ?

Solution:

Mass of combined sample = 210.10 g + 235.10 g = 445.2 g

density = mass / volume

density = 445.2 g / 62.3 mL

density = 7.15 g /mL

3 0
3 years ago
What is the speed of a car that traveled 40.2km in 2 hours?
PolarNik [594]

Answer:

20 km per hour

Explanation:

7 0
3 years ago
Read 2 more answers
Does the color of bell peppers effect the number of seeds inside? Please someone help ASAP I need it today
Mekhanik [1.2K]

I don't think so. "It's not a matter of pigment discrimination: Red and yellow bell peppers are essentially just green peppers that have been allowed to ripen"

3 0
3 years ago
How does the specific heat of water compare to the specific heat of concrete?
telo118 [61]
The specific heat of water is higher than the specific heat of concrete.
5 0
3 years ago
Other questions:
  • what does NaBr + Ca(OH)2 -> CaBr2 + NaOH create? is it a physical or chemical or physical? for an example for what does it cr
    5·1 answer
  • Describe the process illustrated in the diagram above. How many individuals would exist if the process continued for one more ge
    14·1 answer
  • The best way to explain the relationships in a nuclear reaction is by using:
    6·1 answer
  • During which changes of state does the motion of the atoms decrease?
    10·2 answers
  • Why is the half-life of a radioisotope important for radioactive dating?
    12·2 answers
  • Calculate the molar volume occupied by 1 mole of N2 using the van der Waals equation in the form of virial expansion at (a) its
    6·1 answer
  • Two gas cylinders are identical. One contains the monatomic gas argon (Ar), and the other contains an equal mass of the monatomi
    12·1 answer
  • Calculate the freezing point (Kf = 1.86 °C/m) of a 2.1m aqueous solution of KCl.
    9·1 answer
  • What does graduated mean when talking about cylinders and beakers
    14·1 answer
  • Hydrogen and helium in the universe were formed by which of these phenomena?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!