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
Naya [18.7K]
3 years ago
10

A chemical change involves a change in ________. A chemical change involves a change in ________. phase the elements of a molecu

le how atoms are bonded all of the above
Chemistry
1 answer:
Firlakuza [10]3 years ago
4 0

Answer:

All of the above.

Explanation:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

This process is not reversible and a change of energy that is sometimes heat is given off.

You might be interested in
N=?
Mazyrski [523]
Okay so your answer for n is
7 0
3 years ago
What mass of hydrogen contains the same number of atoms as 7.00 g of nitrogen
Leto [7]
Molecular mass of nitrogen, N2 = 2*14 = 28
molecular mass of hydrogen, H2=2*1 = 2

Molecules of both elements contain 2 atoms, so the ratio of molecules is the same as the ratio of atoms.

From the molecular masses above, 
ratio of number of molecules = ratio of molecular masses, therefore
7g N2 : x g H2 = 28:2
cross multiply:
x=7*2/28=0.5 g of Hydrogen has the same number of atoms as 7 g of nitrogen (at room temperatures)

7 0
2 years ago
Which element has the strongest attraction for electrons?
NemiM [27]

Answer:

The answer is Flourine

3 0
2 years ago
The Density of pure carbon in Diamond form is 3.52 g/cm^3. How many cubic inches would 23.7 moles of pure diamond occupy?
Vedmedyk [2.9K]

Answer : The volume of pure diamond is 0.493inch^3

Explanation : Given,

Density of pure carbon in diamond = 3.52g/cm^3

Moles of pure diamond = 23.7 moles

Molar mass of carbon = 12 g/mol

First we have to calculate the mass of carbon or pure diamond.

\text{ Mass of carbon}=\text{ Moles of carbon}\times \text{ Molar mass of carbon}

Molar mass of carbon = 12 g/mol

\text{ Mass of carbon}=(23.7moles)\times (12g/mole)=284.4g

Now we have to calculate the volume of carbon or pure diamond.

Formula used:

Density=\frac{Mass}{Volume}

Now putting all the given values in this formula, we get:

3.52g/cm^3=\frac{284.4g}{Volume}

Volume = 80.8cm^3

As we know that:

1cm^3=0.061inch^3

So,

Volume = 0.061\times 80.8inch^3

Volume = 0.493inch^3

Therefore, the volume of pure diamond is 0.493inch^3

5 0
2 years ago
Identify h2so4(aq) as an acid or a base. write a chemical equation showing how this is an acid according to the arrhenius defini
yarga [219]
  H2SO4  is an  acid

the  chemical  equation  showing  how H2SO4  is an acid  according  to the Arrhenius  definition   is as below

H2SO4  dissociate to  give  2H^+  and  SO4^2-

that is   H2SO4  = 2H^+  +  SO4^2-

According to Arrhenius  an acid  dissociate  to give H^+  ions H2SO4 is an acid  since  it dissociate  to  give  two hydrogen ions  
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement best describes how dynamic equilibrium relates to a saturated solution of sodium chloride? The concentration of
    11·2 answers
  • Use the titration results to calculate the moles of h2so4
    8·1 answer
  • What would be the temperature change 3.0 g of water absorbed 15 J of heat
    15·1 answer
  • What do you call all elements that are clearly not metals?
    5·1 answer
  • Name the intermolecular force in the compound N = O
    6·1 answer
  • How would you use density to identify an unknown substance
    11·2 answers
  • When an atom, ion, or molecule of a reactant switches places with an unpaired reactant, the type of reaction is called _________
    7·1 answer
  • (BRAINLIEST AWARD!! LAST QUESTION!!) Jean-Baptiste Lamarck's theory of evolution stated that an organism could pass on to its of
    12·1 answer
  • Why do non-metals bond with each other to form covalent compound?
    10·1 answer
  • Which element gives up its valence electrons most readily?<br> Bi<br> Fr<br> Be<br> Ar
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!