Chemical Equations

In the bank space for the burning of fossil fuels, you would typically see oxygen (O2) as the reactant needed for combustion to occur. The balanced equation would be: Fossil fuel + O2 → CO2 + H2O + energy.

Yes, a chemical equation summarizes a chemical reaction by showing the reactants and products involved, along with the ratios in which they combine. It provides information on the substances present at the beginning and end of the reaction and the energy changes involved.

No, coefficients in a balanced chemical equation represent the relative amounts of each reactant and product involved in the reaction. Coefficients can be different for each substance in the equation based on the stoichiometry of the reaction.

The balanced chemical equation for the reaction between iron and magnesium chloride is:

2Fe + 3MgCl2 -> 3Mg + 2FeCl3

In the balanced chemical equation 4 Cr(s) + 3 O2(g) → 2 Cr2O3(g), there are a total of 6 chromium atoms (2 from Cr and 4 from Cr2O3) and 6 oxygen atoms (6 from O2 and 3 from Cr2O3) on the right side of the equation.

The balanced chemical equation for this reaction is: 3Mg + 2Fe(NO3)3 -> 3Mg(NO3)2 + 2Fe. In this reaction, magnesium displaces iron from iron(III) nitrate solution to form magnesium nitrate solution and iron.

The balanced chemical equation is:

MgO + H2O → Mg(OH)2

The product formed in this reaction is magnesium hydroxide.

In cellular respiration, glucose (C6H12O6) is oxidized in the presence of oxygen (O2) to produce carbon dioxide (CO2), water (H2O), and ATP (energy). The chemical equation for cellular respiration is: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP.

C5h10o2

(Wiki.answers forced me to make capitalization changes)

The chemical formula for life is C6H12O6, which represents glucose, a crucial molecule for energy production in living organisms. Other essential molecules for life include DNA, which is composed of nucleotides containing phosphorus and nitrogenous bases such as adenine, thymine, cytosine, and guanine.

As long as my knowledge goes, it is polar. This is because hydrocarbons are nonpolar but when you introduce a functional group like amine here the two electrons left from the N tend to focus all the negative density where the N is. Also the N H bond has a more distinctive difference of electronegativity so the negative electrons tend to go there, so a polar molecule is formed.

The empirical formula of the gas formed would be SF6, as the reaction between S8 and AgF leads to the formation of silver sulfate (Ag2SO4) and sulfur hexafluoride gas (SF6).

A chemical reaction will result in a product with not only chemical properties (which are different than the reactants), but also physical properties (which are also different from the reactants).

The unit for balancing is typically grams (g) or kilograms (kg) for measuring the weight of objects being balanced.

A chemical equation tells you the reactants and the products, and also the ratios of each. The ratios can refer to numbers of atoms and molecules or numbers of moles of each reactant and product.

1. Hydrogen gas reacting with oxygen gas to form water: 2H2 + O2 → 2H2O
2. Combustion of methane gas: CH4 + 2O2 → CO2 + 2H2O
3. Neutralization reaction between hydrochloric acid and sodium hydroxide: HCl + NaOH → NaCl + H2O

When salt (sodium chloride) is heated, it does not combust because it is an ionic compound. The heat applied causes it to melt and eventually decompose into sodium metal and chlorine gas. The chemical equation for the decomposition of salt is 2NaCl(s) -> 2Na(s) + Cl2(g).

P3Br5 is the chemical formula for phosphorus pentabromide, which is a solid compound that is used as a brominating agent in organic synthesis. It is composed of three phosphorus atoms and five bromine atoms.

An arrow in a chemical equation represents the direction of the reaction. It indicates the conversion of reactants into products. The reactants are typically written on the left side of the arrow, while the products are written on the right side.

To calculate the molarity of nitric acid, you need to determine the number of moles of barium hydroxide used in the neutralization reaction. From there, you can use the balanced chemical equation to find the moles of nitric acid present in the solution. Finally, divide the moles of nitric acid by the volume of the solution in liters to find the molarity.

Yes, the arrow in a chemical equation typically indicates the direction of the reaction and can be read as "reacts to form" or "yields." It shows the conversion of reactants into products during a chemical reaction.

The chemical formula of peridotite is typically described as (Mg, Fe)2SiO4, which represents the main mineral components olivine and pyroxene. It is a common rock found in the Earth's upper mantle.

The molecular weight(M) of chalk(CaCO3) = (40+12+48)g/mol =100g/mol

and teaspoon (m)= 4.93g

We know, n=m/M

So, n= (4.93/100) mol = .0493 mol

To find out number of molecules we use, N= n x NA equation.

N= .0493 mol x 6.02 x 1023 molecules/mol

=2.968 x 1022 molecules

Therefore, there are 2.968 x 1022 molecules in a teaspoon of chalk.

To find the volume of the flask, first calculate the moles of Na2CO3 using its molar mass. Then use the molarity and moles to find the volume using the formula Molarity (M) = moles/volume (in liters). The volume of the flask needed is then the inverse of the molarity.

First you take your compound AlCl3 and find the molar mass

26.98gAl+(3)35.45gCl= 133.33gAlCl3

Then you convert moles to grams

5molAlCl3x1g(over)1molx133.33g(over)1g=666.65gAlCl3

if you follow the rule of Significant Figures, 5mol has one significant figure (digit) so your answer needs to have 1 digit

700gAlCl3