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
Anestetic [448]
3 years ago
12

Which of the following is true for an atom which has 29 protons, 34 neutrons and 29 electrons?

Chemistry
1 answer:
xeze [42]3 years ago
6 0
The correct description that holds true for the above question would be B. Atomic number - 29 and Mass Number - 63.
You might be interested in
A chemist titrates 160.0mL of a 0.3403M aniline C6H5NH2 solution with 0.0501M HNO3 solution at 25°C . Calculate the pH at equiva
maxonik [38]

Answer : The pH of the solution is, 5.24

Explanation :

First we have to calculate the volume of HNO_3

Formula used :

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the initial molarity and volume of C_6H_5NH_2.

M_2\text{ and }V_2 are the final molarity and volume of HNO_3.

We are given:

M_1=0.3403M\\V_1=160.0mL\\M_2=0.0501M\\V_2=?

Putting values in above equation, we get:

0.3403M\times 160.0mL=0.0501M\times V_2\\\\V_2=1086.79mL

Now we have to calculate the total volume of solution.

Total volume of solution = Volume of C_6H_5NH_2 +  Volume of HNO_3

Total volume of solution = 160.0 mL + 1086.79 mL

Total volume of solution = 1246.79 mL

Now we have to calculate the Concentration of salt.

\text{Concentration of salt}=\frac{0.3403M}{1246.79mL}\times 160.0mL=0.0437M

Now we have to calculate the pH of the solution.

At equivalence point,

pOH=\frac{1}{2}[pK_w+pK_b+\log C]

pOH=\frac{1}{2}[14+4.87+\log (0.0437)]

pOH=8.76

pH+pOH=14\\\\pH=14-pOH\\\\pH=14-8.76\\\\pH=5.24

Thus, the pH of the solution is, 5.24

4 0
3 years ago
Can someone help me with this
sergejj [24]

Answer: 5. Positive

6. Negative

9. Oxygen carbon hydrogen nitrogen

Explanation:

7 0
2 years ago
What are the properties of elements related to?
balu736 [363]
The answer you are looking for is A. the average atomic mass hope this helped have a nice day :)
3 0
3 years ago
Gamma rays are often used to kill microorganisms in food, in an attempt to make the food safer. Some people contend that this ir
kumpel [21]
<span>While treating food with gamma rays kills microorganism by damaging their DNA, the energy of gamma rays rips off electrons from atoms hence ionizing them (causing free radicals). However, gamma rays do not make the food atoms radioactive. The body has a natural mechanism of riding the body of free radicals. However, large quantities of radicals in the body can cause damage.</span>




7 0
3 years ago
How many moles of nitrogen, N, are in 62.0 g of nitrous oxide, N2O?​
SSSSS [86.1K]
Answer- the estimated number is 4 moles but it actually is 3.86 moles
Explanation
hi i hope your days been amazing and know that your loved⋆ ˚。⋆୨୧˚ ˚୨୧⋆。˚ ⋆
<33
8 0
2 years ago
Other questions:
  • Which element forms the basis of all organic compounds
    7·1 answer
  • Why can we characteristic properties of a substance to identify it
    14·1 answer
  • Suppose that this individual now decides to give one-eight percent of a percent (0.125%) of her new net worth (8.12 * 10^10 to c
    13·2 answers
  • If a 3.30 m sample of a is heated to 500 k, what is the concentration of b at equilibrium?
    13·1 answer
  • Hydrogen gas can be produced by reacting aluminum with sulfuric acid. how many moles of sulfuric acid are needed to completely r
    13·2 answers
  • Solid ice will change to liquid water and then to gaseous steam when you add
    12·1 answer
  • Explain why solid sodium chloride does not conduct electricity
    15·1 answer
  • Help im stuck on this i dont understand
    10·2 answers
  • What is the fancy psychological term for "mental process"?
    7·1 answer
  • What is a balanced nuclear equation for the alpha decay of Strontium-90?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!