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
Serjik [45]
4 years ago
13

How many atoms of magnesium are in 1.00 gram?

Chemistry
1 answer:
Rudiy274 years ago
5 0

the correct answer is

( 6.02×1023 )


You might be interested in
Part a use these data to calculate the heat of hydrogenation of buta-1,3-diene to butane. c4h6(g)+2h2(g)→c4h10(g)
Reptile [31]

<u>Answer:</u> The heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

<u>Explanation:</u>

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as \Delta H

The equation used to calculate enthalpy change is of a reaction is:

\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]

For the given chemical reaction:

C_4H_6(g)+2H_2(g)\rightarrow C_4H_{10}(g)

The equation for the enthalpy change of the above reaction is:

\Delta H_{rxn}=[(1\times \Delta H_{(C_4H_{10})})]-[(1\times \Delta H_{(C_4H_6)})+(2\times \Delta H_{(H_2)})]

We are given:

\Delta H_{(C_4H_{10})}=-2877.6kJ/mol\\\Delta H_{(C_4H_6)}=-2540.2kJ/mol\\\Delta H_{(H_2)}=-285.8kJ/mol

Putting values in above equation, we get:

\Delta H_{rxn}=[(1\times (-2877.6))]-[(1\times (-2540.2))+(2\times (-285.8))]\\\\\Delta H_{rxn}=234.2J

Hence, the heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

4 0
3 years ago
Which of the following sets of elements could replace the generic "X" symbol with their own to produce a valid dot notation for
Vsevolod [243]

Answer:

a

Explanation:

Because of their valence electron

Carbon, Silicon and germanium has 4 as their valence electron

5 0
2 years ago
Read 2 more answers
The salts NaCl and CaCl
Irina18 [472]
The answer is 8 :)
All nobel gases have 8 outer electrons.
6 0
4 years ago
Does H₂O have a subscript?
erma4kov [3.2K]
<span> 2 hydrogen atoms attached to an oxygen atom.</span>
7 0
3 years ago
Read 2 more answers
Which group tends not to form ions or react?
Anastaziya [24]
Group 8 elements. They are unreactive and stable
3 0
3 years ago
Other questions:
  • Read the passage below about different types of radiation. Different types of radiation have different penetrating abilities. Fo
    5·2 answers
  • Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. the nacl so
    14·1 answer
  • Which statement is part of the kinetic molecular theory?
    12·2 answers
  • Which of the following dienes would you expect to be the most stable? CH3CH2CH=CHCH2CH=CHCH3 CH3CH=CHCH=CHCH2CH3 CH2=CHCH2CH2CH2
    13·1 answer
  • Farming is one example of a human activity that has changed the environment. Which is the NOT a reason farming has hurt the envi
    13·1 answer
  • What is the flexible connective tissue shown in blus?
    12·2 answers
  • What is the name of this hydrocarbon?
    6·1 answer
  • How many significant figures are in 8.00 (10)-3
    8·1 answer
  • What is the mass of flourine-19
    7·1 answer
  • Can y’all please help me answer?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!