22. pH is a measure of _____________

How many mol of hydrogen in 2.8 mol of caffeine.

pochemuha

Empirical formula of caffeine is C₈H₁₀N₄O₂.

In 1 mol of caffeine we have 10 mol of hydrogen.
In 2,8 mol of caffeine we have x mol of hydrogen.

x = 2,8 mol * 10 mol / 1 mol = 28 mol

ANSWER: There are 28 mol of hydrogen.

:-) ;-)

5 0

3 years ago

Read 2 more answers

Choose the covalent compounds from the following choices Br2 MgS SO2 KF

Novosadov [1.4K]

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

Less than 0.4 then it is Non Polar Covalent Bond

Between 0.4 and 1.7 then it is Polar Covalent Bond

Greater than 1.7 then it is Ionic

For Br₂;

E.N of Bromine = 2.96

________

E.N Difference 0.00 (Non Polar Covalent Bond)

For MgS;

E.N of Sulfur = 2.58

E.N of Magnesium = 1.31

________

E.N Difference 1.27 (Ionic Bond)

For SO₂;

E.N of Oxygen = 3.44

E.N of Sulfur = 2.58

________

E.N Difference 0.86 (Polar Covalent Bond)

For KF;

E.N of Fluorine = 3.98

E.N of Potassium = 0.82

________

E.N Difference 3.16 (Ionic Bond)

Result: The Bonds in Br₂ and SO₂ are Covalent in Nature.

3 0

3 years ago

Which will dissolve faster in water rock salt or granulated salt

Sladkaya [172]

Answer:

Salt!!!

Explanation:

7 0

3 years ago

What are the resulting coefficients when you balance the chemical equation for the combustion of ethane, c2h6? in this reaction,

Vitek1552 [10]

Balance equation for combustion of ethane will be:

2C₂H₆(g) + 7O₂(g)--------> 4CO₂(g) + 6H₂O(g)

To balance the equation:

1. Balance the number of carbon atom on both side:

C₂H₆(g) + O₂(g)--------> CO₂(g) + H₂O(g)

1. balance the number of carbon on both side, as in reactant there are 2 but in product one,

so , multiply the CO₂, by 2 in the product.

2. Balance the number of hydrogen on both side as in reactant the number of hydrogen is 3 but in product it is 6 so, multiplythe number of H₂O by 3,

so multiply the number of H₂O by 3 in product.

3. Balance the number of oxygen on both side , as 1 and 2 step increases the number of oxygen and it becomes 7 , so to balance the number of oxygen on both side by mutiplying the number of O₂ by 7/2 in reactant .

4. Now, doubling the equation will give balance equation that is:

2C₂H₆(g) + 7O₂(g)--------> 4CO₂(g) + 6H₂O(g)

8 0

3 years ago

The product of the nuclear reaction in which 31p is subjected to neutron capture followed by alpha emission is ________.

faltersainse [42]

The product of the nuclear reaction in which 31p is subjected to neutron capture followed by alpha emission is ²⁸Al.
Nuclear reaction: ³¹P + n° → ²⁸Al + α (alpha particle).<span>
Alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.</span>

6 0

3 years ago

Read 2 more answers

22. pH is a measure of ______________.