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4 years ago

What coefficient is assumed if no coefficient written before a formula in a chemical equation

Chemistry

1 answer:

Mice21 [21]4 years ago

7 0

Answer:

Explanation:

Consider the following reaction:

Phosphorus burn in the presence of air and produced diphosphorus pentoxide.

Chemical equation:

P₄ + O₂ → P₂O₅

Balanced chemical equation:

P₄ + 5O₂ → 2P₂O₅

Equation is balanced because there are four phosphorus atoms ans ten oxygen atoms in both side of equation.

Coefficient with reactant and product:

P₄ 1

O₂ 5

P₂O₅ 2

There is no coefficient written before P₄ it means only one P₄ is present.

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Which location will experience the greatest amount of weathering

Ivanshal [37]

Answer:

Explanation:

Weathering occurs fastest in hot, wet climates. It occurs very slowly in hot and dry climates.

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3 years ago

A 825 g iron block is heated to 352 degrees C and is placed in an insulated container (of negligible heat capacity) containing 4

Stella [2.4K]

Answer : The final equilibrium temperature of the water and iron is, 537.12 K

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

$q_1=-q_2$

$m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)$

where,

$c_1$ = specific heat of iron = 560 J/(kg.K)

$c_1$ = specific heat of water = 4186 J/(kg.K)

$m_1$ = mass of iron = 825 g

$m_2$ = mass of water = 40 g

$T_f$ = final temperature of water and iron = ?

$T_1$ = initial temperature of iron = $352^oC=273+352=625K$

$T_2$ = initial temperature of water = $20^oC=273+20=293K$

Now put all the given values in the above formula, we get:

$(825\times 10^{-3}kg)\times 560J/(kg.K)\times (T_f-625K)=-(40\times 10^{-3}kg)\times 4186J/(kg.K)\times (T_f-293K)$

$T_f=537.12K$

Therefore, the final equilibrium temperature of the water and iron is, 537.12 K

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3 years ago

If the federal government wants to encourage businesses and consumers to spend more money, it would MOST LIKELY

ICE Princess25 [194]

If the federal government wants to encourage businesses and consumers to spend more money, it would most likely to reduce the price of the goods to attract more buyers and sellers

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4 years ago

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The answer is 4! Hope this Helps

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3 years ago

What type of mixture contains the largest particles

tia_tia [17]

A suspension is the mixture with the largest particles.

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3 years ago