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
Alex Ar [27]
2 years ago
12

Which subatomic particles have approximately the same mass?

Chemistry
2 answers:
igor_vitrenko [27]2 years ago
8 0

Answer:

The 3rd one is correct

Explanation:

Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams, which scientists define as one atomic mass unit (amu) or one Dalton. Each electron has a negative charge (−1) equal to the positive charge of a proton (+1). Neutrons are uncharged particles found within the nucleus.

zvonat [6]2 years ago
5 0

Explanation:

protons and neutrons have approximately the same size, the electron is 1847th, (I think), the size of a proton

You might be interested in
Please help me with letter a question
Colt1911 [192]
Rise, decrease, away from ocean, towards land
7 0
3 years ago
Some fruits and vegetables are preserved by pickling them. Nandini got confused
stepan [7]

Answer:

ye

Explanation:

ye

3 0
2 years ago
The average atomic mass recorded on the periodic table for cobalt is 58.933 u. This indicates that the most abundant isotope of
OleMash [197]
The average atomic mass of the element is the sum of the products of the percentage abundance of isotope and its mass number. Therefore, for atomic mass equal to 58.933, the most abundant isotope is cobalt-59. Thus, the answer is letter C. 
7 0
3 years ago
you see a coin at the bottom of a fountain of water but when you reach for it it is in another place than it appears to be
Roman55 [17]
Objects in the fountain appear to be somewhere but isnt
6 0
3 years ago
You determine the volume of your plastic bag (simulated human stomach) is 1.08 L. How many grams of NaHCO3 (s) are required to f
dsp73

Answer:

3.636 grams of sodium bicarbonate is required.

Explanation:

Using ideal gas equation:

PV = nRT

where,

P = Pressure of gas = 753.5 mmHg = 0.9914 atm

(1 atm = 760 mmHg)

V = Volume of gas = 1.08 L

n = number of moles of gas = ?

R = Gas constant = 0.0821 L.atm/mol.K

T = Temperature of gas = 24.5 °C= 297.65  K

Putting values in above equation, we get:

(0.9914 atm)\times 1.08 L=n\times (0.0821L.atm/mol.K)\times 297.65K\\\\n=0.0438 mole

Percentage recovery of carbon dioxide gas =  49.4%

Actual moles of carbon dioxide formed: 49.4% of 0.0438 mole

\frac{49.4}{100}\times  0.0438 mol=0.02164 mol

2NaHCO_3\righarrow Na_2CO_3+H_2O+CO_2

According to reaction ,1 mol is obtained from 2 moles of sodium bicarbonate.

Then 0.02164 moles f carbon dioxide will be obtained from:

\frac{2}{1}\times 0.02164 mol=0.04328 mol

Mass of 0.04328 moles pf sodium bicarbonate:

0.04328 mol × 84 g/mol = 3.636 g

3.636 grams of sodium bicarbonate is required.

5 0
3 years ago
Other questions:
  • Which water carries the most oxygen in streams and rivers?
    13·1 answer
  • A gas-forming reaction produces 1.15 m 3 of gas against a constant pressure of 102.0 kPa. Calculate the work done by the gas in
    12·1 answer
  • When do th macroscopic properties become constant in an equilibrium system?
    9·1 answer
  • Anabolic steroids are sometimes used illegally by athletes to increase muscle strength. A forensic chemist analyzes some tablets
    15·1 answer
  • How many moles of NO can be formed when 2.86 mol of N2 reacts?
    11·1 answer
  • HELP LAST QUESTION WILL MAKE BRAINLIEST
    13·1 answer
  • Can you get molecules to stop wiggling??
    5·1 answer
  • Use the standard reduction potentials located in the Tables' linked above to calculate the equilibrium constant for the reaction
    10·1 answer
  • The ions S-2, Cl-1, K+, Ca+2, Sc+3 have the same total number of electrons as the noble gas argon. How would you expect the radi
    5·1 answer
  • Please help I’ll mark Brainlyist !! (No links)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!