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vaieri [72.5K]
3 years ago
15

Balance the following chemical

Chemistry
1 answer:
poizon [28]3 years ago
4 0

Answer:

Explanation:

A chemical formula can be defined as a notation that is used to show which element and how many is contained in a chemical compound.

Also, in chemistry, the sum of charges of the anion and the cation of any ionic compound is always equal to zero.

A chemical equation is considered to be balanced when the amount of reactants on the left is equal to the amount of products on the right.

Therefore;

[2]FeBr3 + [3]Na2S → [1]Fe2S3 + [6]NaBr

In the above chemical equation, we will balance the reactants in the chemical equation with the smallest coefficients possible;

2FeBr_{3} + 3Na_{3}S ----> Fe_{2}S{3} + 6NaBr

Two (2) moles of Iron (III) Bromide reacts with two (2) moles of Sodium Sulfide to form Iron (III) Sulfide and Sodium Bromide.

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Answer:

The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.

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CaHeK987 [17]

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Which of the following statements is a part of John Dalton’s atomic theory?
Phantasy [73]

Answer:

i think it is all atoms of all elements are exactly alike and have the same mass

Explanation:

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3 years ago
Charcoal from the dwelling level of the Lascaux Cave in France gives an average count of 0.97 disintegrations of ^14 C per minut
Verdich [7]

Answer:

Explanation:

count given by old sample = .97 disintegrations per minute per gram

count given by fresh sample = 6.68 disintegrations per minute per gram

Half life of radioactive carbon = 5568 years

rate of disintegration

dN / dt = λ N

In other words rate of disintegration is proportional to no of radioactive atoms present . As number reduces rate also reduces .

Let initial no of radioactive be N₀ and after time t , number reduces to N

N₀ / N = 6.68 / .97

Now

N=N_0e^{-\lambda t}

\frac{N}{N_0} =e^{-\lambda t}

\frac{6.68}{.97} = e^{\lambda t}

λ is disintegration constant

λ = .693 / half life

= .693 / 5568

= .00012446 year⁻¹

Putting the values in the equation above

\frac{6.68}{.97} = e^{.00012446\times t}

6.8866 = e^{.00012446\times t}

1.929577 = .00012446 t

t = 15503.6 years .  

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3 years ago
What is the final temperature when 125 g of H20 at 16°C is mixed with 185 g of H20 at 82°C?
dangina [55]

Answer:

english

Explanation:

98

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