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
ludmilkaskok [199]
3 years ago
6

Which particle often described as having very little or no mass since the mass number does not change when you add more and more

of them to an atom?
Chemistry
1 answer:
astra-53 [7]3 years ago
7 0

Answer:

I wrote this answer to get points lol

Explanation:

You might be interested in
A solution contains 0.60 mg/ml mn2+. what minimum mass of kio4 must me added to 5.00 ml of the solution in order to completely o
azamat
The given solution of Mn²⁺ is 0.60 mg/mL.
Hence mass of Mn²⁺ in 5 mL of solution = 0.60 mg/mL x 5 mL = 3 mg

Molar mass of Mn = 54.9 g/mol
Hence, moles of Mn²⁺ = 3 x 10⁻³ g / 54.9 g/mol = 5.46 x 10⁻⁵ mol

The balanced equation for the reaction is,
2Mn²⁺ + 5KIO₄ + 3H₂O → 2MnO₄⁻ + 5KIO₃ + 6H⁺

The stoichiometric ratio between Mn²⁺ and KIO₄ is 2 : 5

Hence, moles of KIO₄ reacted = 5.46 x 10⁻⁵ mol x (5 / 2)
                                                 = 13.65 x 10⁻⁵ mol
Molar mass of KIO₄ = 230 g/mol

Hence needed mass of KIO₄ = 13.65 x 10⁻⁵ mol x 230 g/mol
                                               = 0.031395 g
                                               = 31.395 mg
                                               ≈ 31.4 mg
5 0
3 years ago
Help meee, if u help me i give u a pizza :)
kompoz [17]
Give me 25 minutes and I’ll have the answers :)
6 0
2 years ago
The ability for an pond to freeze over in the winter
Brums [2.3K]

Answer:

The ability for a pond to freeze over in the winter is a physical property.

3 0
3 years ago
Read 2 more answers
What is/are the product(s) of a neutralization reaction of a carboxylic acid? View Available Hint(s) What is/are the product(s)
lutik1710 [3]

Answer:

A carboxylate salt and water

Explanation:

A carboxylic acid is an organic compound that has general formula RCOOH, where R is a carbon chain. Because it's an acid, the neutralization will happen when it reacts with a base, such as NaOH.

When this reaction occurs, the base will dissociate in Na⁺ and OH⁻, and the acid will ionize in RCOO⁻ and H⁺, so the products will be RCOO⁻Na⁺ (a carboxylate salt) and H₂O (water).

7 0
3 years ago
What is the percent by mass of oxygen in carbon dioxide (CO2)?
wariber [46]

Answer:

= 72.73%

Explanation:

The percentage by mass of an element is given by;

% element = total mass of element in compounds/molar mass of compound × 100

The mass of oxygen in carbon dioxide = 32 g

Molar mass of CO2 = 44 g

Therefore;

% of O2 = 32/44 × 100%

             <u>= 72.73%</u>

8 0
3 years ago
Other questions:
  • Consider the reaction below. 2Al2O3 4Al + 3O2 What is the mole ratio of oxygen to aluminum?
    15·2 answers
  • Based on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the pr
    13·1 answer
  • What type of energy is stored in the earths crust and produces earthquakes
    8·2 answers
  • What is the word for mixture of solids and water, plz an accurate answer, otherwise report.
    15·1 answer
  • Adding luminol to water creates a physical or chemical change ​
    10·2 answers
  • Flammable materials like alcohol should never be dispensed or used near True or False
    15·1 answer
  • Joe is given a 118 g sample of an impure aqueous solution. The solution does not conduct electricity so he assumes the impurity
    14·1 answer
  • Touching a hot stove or the melting of ice in your hand (as you squeeze it) is an example of
    13·2 answers
  • How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a l
    11·2 answers
  • What do all fossil fuels have in common?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!