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4 years ago

What is the answer if u know please answer

Chemistry

1 answer:

forsale [732]4 years ago

7 0

An atom having 52 protons and 54 electrons would have an atomic number of 52 and a net charge of -2. This element would be 52 Te 2-, or choice A.

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In a chemical reaction, the mass of the products ____.

Pani-rosa [81]

In a chemical reaction, the mass of the products is less than the mass of the reactants.
the first step in most stoichiometry problems is to convert given quantities to moles.

Hope this helps! If it did, pls marky me brainly thank, and 5star me

5 0

3 years ago

Read 2 more answers

Nitric oxide is formed in automobile exhaust when nitrogen and oxygen in air react at high temperatures.N2(g) + O2(g) 2NO(g)The

yanalaym [24]

Answer : The correct option is, (E) 7.8 atm

Explanation :

The partial pressure of $N_2$ = 8.00 atm

The partial pressure of $O_2$ = 5.00 atm

$K_p$ = 0.0025

The balanced equilibrium reaction is,

$N_2(g)+O_2(g)\rightleftharpoons 2NO(g)$

Initial pressure 8.00 5.00 0

At eqm. (8.00-x) (5.00-x) 2x

The expression of equilibrium constant $K_p$ for the reaction will be:

$K_p=\frac{(p_{NO})^2}{(p_{N_2})(p_{O_2})}$

Now put all the values in this expression, we get :

$0.0025=\frac{(2x)^2}{(8.00-x)\times (5.00-x)}$

By solving the terms, we get:

$x=0.15atm$

The equilibrium partial pressure of $N_2$ = (8.00 - x) = (8.00 - 0.15) = 7.8 atm

Therefore, the equilibrium partial pressure of $N_2$ is 7.8 atm.

3 0

3 years ago

The periodic law states that the physical and chemical properties of elements are periodic functions of their?

svetoff [14.1K]

The periodic law states that the physical and chemical properties of elements are periodic functions of their "Atomic Numbers"

So, option B is your answer.

Hope this helps!

6 0

3 years ago

In a 10-gram sample of carbon and a 10-gram sample of sulfur, how many more moles of carbon are there than sulfur?

8_murik_8 [283]

Your answer will be the second option

5 0

3 years ago

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The following balanced equation shows the decomposition of ammonia (NH3) into nitrogen (N2) and hydrogen (H2). 2NH3 → N2 + 3H2 A

Triss [41]

The decomposition of ammonia is characterized by the following decomposition equation:
2NH₃ → N₂ + 3H₂

The mole ratio of N₂ : H₂ is 1 : 3

If the number of moles of N₂ = 0.0351 mol
Then the number of moles of H₂ = 0.0351 mol × 3
= 0.1053 mol

The number of moles of hydrogen gas produced when 0.0351 mol of Nitrogen gas is produced after the decomposition of Ammonia is 0.105 mol (OPTION 3).

6 0

3 years ago

Read 2 more answers