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
hodyreva [135]
3 years ago
6

The total number of each element is not changed during a chemical reaction

Chemistry
1 answer:
Paha777 [63]3 years ago
3 0

false all element when they are combined eachother thier valance number will change

the combination of oxygen and aluminum gives us Al2O3 see even the numbers are changing thank you if you have a comment you can write

You might be interested in
Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items? to see if food went bad to t
san4es73 [151]

Answer: ABC

Explanation:

4 0
3 years ago
Read 2 more answers
Calculate the concentration expressed in percent, if 10 g of NaOH is diluted to 500 ml with water.
Zepler [3.9K]

If 10 g of NaOH is diluted to 500 ml with water then  the concentration expressed in percent is 0.5 mol/L .

Calculation ,

Given mass in gram = 10 g

Number of moles = given mass /molar mass = 10 g / 40 g/mol = 0.25mole

Given volume in ml = 500 ml

Given volume in liter  = 0.5 L

Putting the value of mass and volume in equation i we get concentration expressed in percent .

C = number of moles ×100/ volume in liter = 0.25mole ×100/ 0.5 L

C  =  0.5 mol/L

Concentration of solution in terms of percentage can be expressed in two ways

1) percentage by mass

2) percentage by volume

Hence, for liquid solutions, concentration is expressed in terms of percentage by volume.  

To learn more about concentration please click here ,

brainly.com/question/10380236

#SPJ4

5 0
1 year ago
Helooo i need help please :)
Tatiana [17]
It is a ,d and c just make sure tho
6 0
3 years ago
What mass of Iron (III) acetate will be produced when 1.50 grams of iron reacts in acetic acid?
pantera1 [17]

Answer:

2Fe + 6HC2H3O2 → 2Fe(C2H3O2)3 + 3H2

Explanation:

There you go

4 0
3 years ago
Explain why atoms are neutral.
svlad2 [7]

Atoms are generally neutral because they have an equal amount of protons and electrons.

8 0
3 years ago
Other questions:
  • If the internal energy of the products of a reaction is lower than the internal energy of the reactants, what is the sign of δe
    11·1 answer
  • How to find valence electrons?
    9·2 answers
  • What processes shape the surface of the land?
    9·2 answers
  • Humans affect Earth in many ways. The use of fossil fuels, the clear-cutting of forests, and controlled burns can affect the car
    8·2 answers
  • Describe a structure of a ecosystem
    15·1 answer
  • What is the coefficient in a chemical equation
    10·2 answers
  • What processes add methane (CH4) to the atmosphere<br>​
    12·1 answer
  • How many molecules of NH3 are in 45 mol of NH3 ?​
    12·1 answer
  • How much energy is required to heat 2kg of ice from -5°c to 0°c
    11·1 answer
  • What is the molarity if 16. 0 grams of NaOH is dissolved in 855 mL of solution?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!