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
marusya05 [52]
3 years ago
11

Elements listed in vertical columns of the periodic table:

Chemistry
2 answers:
True [87]3 years ago
6 0

Answer: Option (a) is the correct answer.

Explanation:

It is known that chemical properties of an atom depends on the number of electrons in its outermost shell, that is, valence shell.

For example, Na has 1 electrons in its valence shell and K also has 1 valence electron as both Na and K belongs to the same group.

Therefore, vertical columns in the periodic table represent groups and horizontal lines represent period.

Thus, we can conclude that elements listed in vertical columns of the periodic table have similar chemical properties.

marysya [2.9K]3 years ago
3 0
Vertical columns are called groups, or families. 

They share similar chemical properties. 

Answer: <span>have similar chemical properties</span>
You might be interested in
elabora un cuadro comparativo como el del modelo , en el que describas los planteamientos filosoficos de tales , anaximenes y an
irina1246 [14]

Answer:El planteamiento de Anaxímenes no se posa sobre una innovadora teoría científica, pues su pretensión consiste en pre- sentar las bases filosóficas de una.

Explanation:

7 0
3 years ago
A buffer is prepared by dissolving 0.80 moles of NH3 and 0.80 moles of NH4Cl in 1.00 L of aqueous solution. If 0.10 mol of NaOH
Vikki [24]

Answer:

a. 10.54

Explanation:

reaction is

NH₃ +  NaOH   -----------------NH₄Cl + H₂O

0.10 mol NaOH will consume 0.10 mol NH₃ thereby decreasing the initial amount of moles NH₃ and increasing that of NH₄Cl

mol NH₃  = 0.80 - 010 = .70

mol NH₄Cl = 0.80 + .10 = 0.90

pH = pKₐ + log (( NH₃/NH₄Cl))

pH =  9.26 + log (( 0.90 + 0.70)) = 9.26 + 0.11 = 10.54

7 0
3 years ago
What is the test used to diffferentate Be(OH) from Ba(OH)?
OleMash [197]
Ba (OH) 2 Ba(OH) 2 is a string electrolyte, determine the concentration of each of the individual in a 0.400m Ba (OH)20.400m


6 0
2 years ago
Experiments with rats show that if rats are dosed with 3.0 mg/kg of cocaine (that is, 3.0 mg cocaine per kg of animal mass), the
Aliun [14]

Answer:

The molecules of dopamine would be produced in a rat after 60 seconds of a 3.0 mg/kg dose of cocaine is 2.258\times 10^{12} molecules.

Explanation:

Concentration of dopamine = 0.75 μM = 7.5\times 10^{-7} M

1 μM  = 10^{-6} M

Volume of the brain in which dopamine is produced = V=5.00 mm^3

1 mm^3=10^{-6} L

V = 5.00\times 10^{-6} L

Moles of dopamine = n

Concentration=\frac{moles}{Volume}

7.5\times 10^{-7} M=\frac{n}{5.00\times 10^{-6} L}

n=7.5\times 10^{-7} M\times 5.00\times 10^{-6} L=3.75\times 10^{-12} mol

1 mol = 6.022\times 10^{23} molecules

So, molecules in 3.75\times 10^{-12} mol of dopamine :

3.75\times 10^{-12}\times 6.022\times 10^{23}=2.258\times 10^{12} molecules

4 0
3 years ago
To be honest what is oxygen im really dumb need help asap
Sladkaya [172]
I'm dumb too, but oxygen is basically just plants.
you can't breathe without nature.

5 0
4 years ago
Other questions:
  • Write a balanced nuclear equation for the beta decay of protactinium
    13·1 answer
  • The standard entropy of Pb(s) at 298.15 K is 64.80 J K–1 mol–1. Assume that the heat capacity of Pb(s) is given by: CP,m(Pb, s)
    7·1 answer
  • What is the molar mass for N5O9
    7·1 answer
  • A compass needle points directly to your right. which way is east ?
    11·1 answer
  • Which of the following is an example of a scientific law?
    8·2 answers
  • Convert the Following<br><br> 10 hm to cm
    12·1 answer
  • Ions are atoms that have an electrical charge because they have gained electrons or lost electrons. If a neutral atom GAINS an e
    6·1 answer
  • How do deep currents form ???
    8·1 answer
  • Convert 154 kPa to atmospheres
    10·1 answer
  • The definition of the acceleration states that an object accelerates when it
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!