_Calculating_Quantities_in_Reactions_
1) _Blank_ in chemical equations provide mole ratios that can be used as conversion factors.
2) When calculating the numbers of particals,you can use _Blank_ as the conversion factor.
3)In making calculations involving _Blank_ you must convert volume to mass.
Not much to go on here.
1. coefficients.
2. 6.02E23/1 mol
3. liquids?
1) The blank in chemical equations that provide mole ratios that can be used as conversion factors is the coefficients of the reactants and products.
2) When calculating the numbers of particles, you can use Avogadro's number (6.022 × 10^23 particles/mol) as the conversion factor.
3) In making calculations involving density, you must convert volume to mass.
To calculate quantities in reactions, we can use various conversion factors depending on what we are trying to calculate. Let's go through each question and understand how to calculate each quantity.
1) The blank in chemical equations provides mole ratios that can be used as conversion factors.
A chemical equation represents a balanced reaction between different substances. The coefficients in the equation represent the number of moles of each substance involved in the reaction. These coefficients act as mole ratios, which can be used to convert between the number of moles of one substance to another.
For example, consider the equation: 2H2 + O2 -> 2H2O
In this equation, the coefficient of H2 is 2, and the coefficient of H2O is also 2. This means that for every 2 moles of H2, we produce 2 moles of H2O. These coefficients can be used as a conversion factor to calculate the number of moles of H2O produced when given the number of moles of H2.
2) When calculating the numbers of particles, you can use blank as the conversion factor.
To calculate the number of particles involved in a reaction, we can use Avogadro's number as a conversion factor. Avogadro's number (6.022 x 10^23) represents the number of particles (atoms, molecules, ions) present in one mole of a substance. So, if we know the number of moles of a substance, we can multiply it by Avogadro's number to calculate the number of particles.
For example, if we have 2 moles of H2O, we can use Avogadro's number to calculate the number of water molecules present:
Number of water molecules = 2 moles H2O x (6.022 x 10^23 molecules/mol) = 1.2044 x 10^24 molecules
3) In making calculations involving blank, you must convert volume to mass.
When dealing with substances in the gas phase, it is common to need to convert between volume and mass. This conversion is necessary because gases occupy different volumes depending on their temperature, pressure, and the amount of substance present (moles).
To convert volume to mass, we need to use the density of the substance. The density represents the mass per unit volume. By multiplying the volume of the gas by its density, we can calculate the mass of the substance.
For example, if we have a volume of 10 liters of a gas that has a density of 2 grams per liter, we can calculate the mass of the gas:
Mass of the gas = Volume of the gas x Density of the gas = 10 L x 2 g/L = 20 grams
These are the general concepts and methods to calculate quantities in reactions. Remember to always check the units and labels to ensure the conversion factors are used correctly.