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
IceJOKER [234]
3 years ago
10

An atom has atomic number 11 and mass number 23. How many electrons does the atom have?

Chemistry
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

11

Explanation:

the atomic number is the same as the number of electrons

You might be interested in
27. The compound having only primary hydrogen atoms is ( ).
11111nata11111 [884]

Answer:

The correct answer is - (a) isobutene.

Explanation:

A 1° or primary hydrogen atom is one that is bonded to a 1° carbon atom; a 2° hydrogen atom is one that is connected to a 2° carbon atom; In isobutene only among all the all option having only primary hydrogen atoms. rest have secondary or teritary hydrogen atoms in them

C1∘H3≡CH: (only 1∘ hydrogen atoms)

4 0
3 years ago
How does an atom become a positive ion? a negative ion?
OleMash [197]

So ions are atoms that have either gained or lost electrons to complete their energy levels.

In order for a positive ion to be formed, an atom must lose electrons.

In order for a negative ion to be formed, an atom must gain electrons.

When an atom loses and electron, it loses a negative charge and then becomes a positive ion.

8 0
4 years ago
Read 2 more answers
At − 13.0 ∘ C −13.0 ∘C , a common temperature for household freezers, what is the maximum mass of aspartame (C14H18N2O5) you can
Yuliya22 [10]

Answer : The maximum mass of aspartame is, 5142.3 grams

Explanation :  Given,

Molal-freezing-point-depression constant (K_f) for water = 1.86^oC/m

Mass of water (solvent) = 2.50 kg

Molar mass of aspartame = 294.3 g/mole

Formula used :  

\Delta T_f=i\times K_f\times m\\\\T^o-T_s=i\times K_f\times\frac{\text{Mass of aspartame}}{\text{Molar mass of aspartame}\times \text{Mass of water in Kg}}

where,

\Delta T_f = change in freezing point

\Delta T_s = freezing point of solution = -13.0^oC

\Delta T^o = freezing point of water = 0^oC

i = Van't Hoff factor = 1 (for non-electrolyte)

K_f = freezing point constant for water = 1.86^oC/m

m = molality

Now put all the given values in this formula, we get

0^oC-(-13.0^oC)=1\times (1.86^oC/m)\times \frac{\text{Mass of aspartame}}{294.3g/mol\times 2.50kg}

\text{Mass of aspartame}=5142.3g

Therefore, the maximum mass of aspartame is, 5142.3 grams

8 0
3 years ago
Which of the following contains the same number of atoms as 4.032g of hydrogen atoms?
mixer [17]
Correct answer is D. 4.032 g of Hydrogen atoms contain same number of atoms as that contained by 2 moles of hydrogen molecules. Solution is below,

4 0
4 years ago
Which type of heat exchanger shell and tube or plate heat exchanger is suitable for evaporation?
klasskru [66]

Answer:

shell and tube type heat exchanger

Explanation:

for evaporation the shell and tube type heat exchanger is best suited.

  • in the plate heat exchanger there is gaskets in between every part so this part become weak part in heat echanger and there is possibilities of leakage through this part, there is no such problem in shell and tube type.
  • the plate type cant be used when there is high temperature and high pressure drop but shell and tube type can be used
  • in evaporation there the liquids change into vapors due to which there is sudden change in pressure and in which plate type is not used because there is chances of leakage
5 0
3 years ago
Other questions:
  • Look at the chart showing the daily stock data for WebTrend Inc.’s stock over the past month, and read this stock analyst’s view
    7·2 answers
  • How many kilojoules are needed to raise the temperature of 325 grams of water from 15.0 degrees c to 77.0 degrees c?
    8·2 answers
  • How are Mass and volume related, when determining density?
    11·2 answers
  • A molecule has four bonded atoms around a central atom. The central atom does not have any lone pairs of electrons. What is the
    8·2 answers
  • What is the pH of 0.10 M NaF(aq). The Ka of HF is 6.8 x 10-4
    14·1 answer
  • Dihydrogen dioxide decomposes into water and oxygen gas. Calculate the amounts requested if 1.34 moles of dihydrogen dioxide rea
    8·1 answer
  • A solution of Na2CO3 is added dropwise to a solution that contains 1.12×10−2 M Fe2+ and 1.45×10−2 M Cd2+. What concentration of
    10·1 answer
  • According to Beer's law a. the absorbance is proportional to the reciprocal of the concentration. b. the absorbance is proportio
    14·1 answer
  • the combustion of ethane (c 2 h 6 ) is represented by the equation: 2c 2 h 6 (g) 7o 2 (g) 4co 2 (g) 6h 2 o(l) in this reaction:
    14·1 answer
  • Which intermolecular force would affect the boiling point the least?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!