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3 years ago

Balance the equation. Help please!!

Chemistry

2 answers:

Tanzania [10]3 years ago

6 0

Hey there!:

Balanced equation:

5 SiO2 + 2 CaC2 = 5 Si + 2 CaO + 4 CO2

Reagents Products:

Si = 5 * 1 => 5 Si = 5* 1 => 5

O = 5 * 2 => 10 Ca = 2*1 => 2

Ca = 2 * 1 => 2 O = 2 * 1 => 2

C = 2* 2 = 4 C = 4 * 1 => 4

O = 4 * 2 => 8

Hope that helps!

Artemon [7]3 years ago

3 0

<h2>Answer:</h2>

Unbalanced equation:

SiO2 + CaC2 → Si + CaO + CO2

Balanced equation:

5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2

<h3>Explanation:</h3>

The chemical equation needs to be balanced so that it follows the law of conservation of mass.
A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.

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A student rides a bicycle 240 meters in 4 minutes to get to school what is the student's speed?

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Answer:

The student's speed is 60 mph.

Explanation:

All you have to do is divide: 260/4 = 60 mph.

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3 years ago

1. How is different kind of molecules different? And similar?

dexar [7]

Answer:

1.Molecules are made of atoms. So different molecules can have different (or same) number of atoms they are made of.Different atoms are made of different number of protons of neutrons in the nucleus (also electrons around the nucleus but they are very small even compared to atom and don’t add up for volume or mass) therefore their radius and mass are different.

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Explanation:

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5 0

2 years ago

Read 2 more answers

Empirical formula of c3h12o6

morpeh [17]

Answer:

$CH_{4} O_{2}$

Explanation:

The empirical formula is the simplest whole-number ratio of the elements in a compound to one another. To find the empirical formula given a molecular formula, divide all the subscripts by their greatest common factor.

3, 12, and 6 can all be divided by 3, which makes the empirical formula $CH_{4} O_{2}$

5 0

3 years ago

In a reaction, 24.9 L of N2 reacts with excess Hy to produce NH3. How many liters of NH3

Amiraneli [1.4K]

Answer:

A. 49.8L of NH3.

B. 33.83g.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is shown below:

N2 + 3H2 —> 2NH3

A. From the balanced equation above,

1L of N2 produced 2L of NH3.

Therefore, 24.9L of N2 will produce = 24.9 x 2 = 49.8L of NH3.

Therefore, 49.8L of NH3 is produced from the reaction.

B. Determination of the mass NH3 produced.

First, we shall determine the number of mole of NH3 produced. This can be obtained as follow:

Volume (V) = 49.8L

Pressure (P) = 97.8 kPa = 97.8/101.325 = 0.97atm

Temperature (T) = 23.7°C = 23.7°C + 273 = 296.7K

Gas constant (R) = 0.082atm.L/Kmol

Number of mole (n) =...?

PV = nRT

n = PV /RT

n = (0.97 x 49.8) / (0.082 x 296.3)

n = 1.99 mole

Next, we shall convert 1.99 mole to NH3 to grams. This is illustrated below:

Number of mole NH3 = 1.99 mole

Molar mass of NH3 = 14 + (3x1) = 17g/mol

Mass of NH3 =..?

Mass = mole x molar Mass

Mass of NH3 = 1.99 x 17

Mass of NH3 = 33.83g

Therefore, 33.83g of NH3 is produced.

6 0

3 years ago

The ability of sodium chloride to dissolve in water is an example of a (D, right?)

kupik [55]

D) Physical Change, I would argue, because you can reverse this change by boiling off (evaporating) the water. But there are arguments for both physical and chemical change being what occurs.

A physical change results in a change of the material's appearance, but no new chemical products result. A chemical change involves a chemical reaction, with new substances produced as a result of the change.

3 0

2 years ago