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
Fynjy0 [20]
1 year ago
11

Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?.

Chemistry
1 answer:
VLD [36.1K]1 year ago
3 0

The number of neutrons possessed by an isotope beryllium-9 is 5.

<h3>What is neutron?</h3>

Neutron is a subatomic particle forming part of the nucleus of an atom and having no charge.

The number of neutrons in the atom of an element can be calculated by subtracting the number of protons or atomic number from the mass number.

That is; no. of neutrons = mass number - no of protons

According to this question, Beryllium has an atomic number or proton number of 4. The number of neutrons in an isotope of beryllium-9 is as follows:

no of neutrons = 9 - 4 = 5

Therefore, the number of neutrons possessed by an isotope beryllium-9 is 5.

Learn more about neutrons at: brainly.com/question/13131235

#SPJ1

You might be interested in
Calculate the molarity of 13.1 g of NaCl in 727 mL of solution
valentina_108 [34]

Answer:

The molarity of the solution is 0,31 M

Explanation:

We calculate the weight of 1 mol of NaCl from the atomic weights of each element of the periodic table. Then, we calculate the molarity, which is a concentration measure that indicates the moles of solute (in this case NaCl) in 1000ml of solution (1 liter)

Weight 1 mol NaCl= Weight Na + Weight Cl= 23 g + 35, 5 g= 58, 5 g

58, 5 g-----1 mol NaCl

13,1 g ---------x= (13,1 g x 1 mol NaCl)/58, 5 g= 0, 224 mol NaCl

727 ml solution------ 0, 224 mol NaCl

1000ml solution------x= (1000ml solutionx0, 224 mol NaCl)/727 ml solution

x=0,308 mol NaCl---> <em>The solution is 0,31 molar (0,31 M)</em>

5 0
3 years ago
Functional group and bond hybridization of vanillin
lana66690 [7]

Vanillin is the common name for 4-hydroxy-3-methoxy-benzaldehyde.

See attached figure for the structure.

Vanillin have 3 functional groups:

1) aldehyde group:  R-HC=O, in which the carbon is double bonded to oxygen

2) phenolic hydroxide group: R-OH, were the hydroxyl group is bounded to a carbon from the benzene ring

3) ether group: R-O-R, were hydrogen is bounded through sigma bonds to carbons

Now for the hybridization we have:

The carbon atoms involved in the benzene ring and the red carbon atom (from the aldehyde group) have a <u>sp²</u> hybridization because they are involved in double bonds.

The carbon atom from the methoxy group (R-O-CH₃) and the blue oxygen's have a  <u>sp³</u>  hybridization because they are involved only in single bonds.

7 0
3 years ago
How many meters in 1000 mm
iris [78.8K]
1000 mm equals 1 meter
7 0
3 years ago
Read 2 more answers
When considering metal complexation with EDTA, if you are comparing 2 metals, the metal with a higher ____________ will react wi
DENIUS [597]

If you are comparing 2 metals, the metal with a higher <u>Number of free ions</u> will react with EDTA first

<h3>What is EDTA ?</h3>

EDTA is a type of chemical which binds certain metal ions such as calcium and magnesium. some of the functions of EDTA  includes:

  • Preventing blood clotting of blood samples
  • prevention of the formation of Biofilm by bacterias

The EDTA will readily react with metals which have a hiogher number of free ions that it can bind with.

Hence we can conclude that If you are comparing 2 metals, the metal with a higher <u>Number of free ions</u> will react with EDTA first.

Learn more about EDTA : brainly.com/question/10818175

7 0
2 years ago
Is cobalt 60 more dangerous than bananas ( potassium 40) and why ?
maxonik [38]

Answer:

To the best of my knowledge, it is because of the amount of gamma rays is given off.

Explanation:

While both are isotopes, Potassium 40 gives off fewer gamma rays compared to Cobalt 60. Potassium 40 isn't really harmful to humans, but Cobalt 60 (I believe) is used in chemotherapy.

7 0
3 years ago
Other questions:
  • A weak base is added to water. Which information is required to find the strength of its conjugate acid?
    9·2 answers
  • Compare a solvent and a solute?
    8·1 answer
  • The energy transferred between samples of matter because of a difference in their temperatures is called a. heat. b. thermochemi
    6·1 answer
  • If you were asked to convert 25 kg to the unit mg, which of the following would be the first fraction used in the conversion?
    9·1 answer
  • Suppose 1.87g of nickel(II) bromide is dissolved in 200.mL of a 52.0mM aqueous solution of potassium carbonate.
    10·1 answer
  • The distance from one place to another
    10·2 answers
  • Which of the following is a soft metal in the lightest element that is a solid at standard temperature and pressure?
    5·2 answers
  • How is a reaction described when a chemical reaction uses up energy?<br>PLZ HELP ASAP PLZ
    15·1 answer
  • it is method used to separate particulates from a liquid by allowing in the solids to settle at the bottom of the mixture​
    6·1 answer
  • Who ever answer this is genius ????????? <br><br><br>let's see?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!