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Igoryamba
4 years ago
7

How many MGCO3 molecules are in 6.72 mol MgCO3?

Chemistry
1 answer:
Assoli18 [71]4 years ago
5 0
Since 1 mol --> 6.023x10^23 number of atoms/particles/molecules

Then do
1 : 6.023x10^23
6.72 : X
X= 6.72 x 6.023x10^23
X= 4.047x10^24 number of molecules
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Name the following aldehyde:
PIT_PIT [208]

The name of the aldehyde is 4, 7- diethyldecanal (D)

<h3>What are rules for naming organic compounds?</h3>

The rules for naming organic compounds are;

  1. Find the longest carbon chain in the compound. ...
  2. Name the longest carbon chain found
  3. Figure the ending name
  4. Then number the carbon atoms
  5. Name the side groups
  6. Then put the side groups in alphabetical order.

The longest chain of the structure given is 10 (deca)

It is an alkanal due to the presence of the carbonyl -CHO

There are two side groups (ethyl) at the 4th and 7th carbon atoms which are both the same, CH2CH3 and are named diethyl

Thus, the name of the aldehyde is 4, 7- diethyldecanal

Learn more about naming of organic compounds here:

brainly.com/question/14094007

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3 0
2 years ago
How many Mol are in 4.000 grams of MgCl2 ?
grigory [225]

Answer:

The number of mol is: 0, 042 mol in 4 grams of MgCl2

Explanation:

We calculate the weight of 1 mol of MgCl2:

Weight 1mol of MgCl2= weight Mg + (weight Cl)x  2=

24, 3 grams + 2 x 35, 5 grams = 95, 3 grams/mol MgCl2

95, 3 grams------1 mol MgCl2

4 grams      -------x = (4 grams x1 mol MgCl2)/ 95, 3 grams= 0, 04197 mol MgCl2

4 0
4 years ago
Lab Scenario D:
Cloud [144]

Answer:

See explanation

Explanation:

A reaction in which heat and light are produced is a combustion reaction. Combustion is said to have occurred when a substance is burnt in oxygen.

The balanced equation of the reaction is;

4Li(s) + O2(g) ------->2Li2O(s)

This reaction is exothermic because heat was produced. The reaction has a low activation energy as the metal easily burst into flames in oxygen. A catalyst is not needed in this reaction because it has a low activation energy.

According to the law of conservation of mass. Atoms are neither created nor destroyed in a chemical reaction. What this means is that in a chemical reaction, the number of atoms of each element on the left hand side must be the same as the same as the number of atoms of the same element on the right hand side.

3 0
3 years ago
Enter your answer in the provided box. To draw a Lewis structure, first add the number of outer (valence) electrons contributed
DIA [1.3K]

Answer:

14 is this value for a molecule of CH_3Cl.

Explanation:

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

Number of total outer valence electrons is carbon = 4

Number of total outer valence electrons is hydrogen = 1

Number of total outer valence electrons is chlorine = 7

For total number of outer electrons is CH_3Cl

=1\times 4+3\times 1+1\times 7=14

14 is this value for a molecule of CH_3Cl.

4 0
4 years ago
A solution of dispersant is made by taking 15.0 mL of a 50.0 mg/mL solution of Randyne and mixing it with 50.0 mL of water. Calc
Len [333]

Answer:

The final concentration of the Randyne in grams per milliliter = 0.011 g/mL

Explanation:

As we know

C1V1 = C2V2

C1 and C2 = concentration of solution 1 and 2 respectively

V1 and V2 = Volume of solution 1 and 2 respectively

Substituting the given values, we get -

50 * 15 = X * (15+50)\\X = 11.54 mg/mL

The final concentration of the Randyne in grams per milliliter = 0.011 g/mL

8 0
3 years ago
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