Carbon dioxide. This is because when fossil fuels are burned, oxygen combines with carbon to form CO2 and with hydrogen to form water (H2O). These reactions release heat that we use for energy. For example, for the same amount of energy produced, burning natural gas produces about half of the amount of CO2 produced by burning coal.
The burning of fossil fuels primarily releases carbon dioxide into the atmosphere, contributing to greenhouse gas emissions and global warming.
When fossil fuels are burned, carbon dioxide (CO₂) is predominantly released into the atmosphere. Fossil fuels, such as coal, oil, and natural gas, are composed mainly of carbon. During combustion, this carbon combines with oxygen in the air to form carbon dioxide. This process is a significant source of greenhouse gases, contributing heavily to global warming. It's important to note that other substances like water vapor and minor amounts of sulfur oxides can also be produced in this reaction, but the main product is carbon dioxide.
#SPJ2
To produce 100.0 L of NH3 at STP, 62.4 grams of N2 are required.
The balanced equation for the reaction is:
N2(g) + 3H2(g) → 2NH3(g)
According to the balanced equation, one mole of N2 reacts with three moles of H2 to produce two moles of NH3. From this information, we can use stoichiometry to determine the mass of N2 required to produce 100.0 L of NH3 at STP.
First, we need to convert liters of NH3 to moles using the ideal gas law and the molar volume of a gas at STP (~22.4 L/mol). Once we have the moles of NH3, we can use the mole ratio from the balanced equation to calculate the moles of N2. Finally, we can use the molar mass of N2 to convert moles to grams.
Let's calculate:
Therefore, 62.4 grams of N2 are required to produce 100.0 liters of NH3 at STP.
#SPJ12
and reactants are equal.
B. The rate of the forward reaction equals the rate of the reverse reaction and the
concentrations of products and reactants are equal.
C. The rates of the forward and reverse reactions are zero and the concentrations of products
and reactants are constant.
D. The rate of the forward reaction equals the rate of the reverse reaction and the
concentrations of products and reactants are constant.
The best statement which describes a reaction in a state of equilibrium is letter D. The rate of the forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants are constant.
>Chemical equilibrium is defined as the state in which both reactants and products are present in concentrations which have no further tendency to change with time. This state results when the forward reaction proceeds at the same rate as the reverse reaction. The reaction rates of the forward and backward reactions are generally not zero, but equal. Thus, there are no net changes in the concentrations of the reactant(s) and product(s).
Answer: subatomic particles: negative charges (electrons) distributed in a mass of positive charge.
Explanation:
1) John Dalton's model depicted the matter as the combination of tiny, indivisible particles, called atoms.
According to this model, atoms can not be created, destroyed, or divided into smaller particles.
2) When it was discovered that all forms of matter contained negative particles, by multiple experiments with cathode ray tubes, those particles where named electrons.
3) J.J. Thompson could determine that the mass of those negative charges was much smaller that the mass of the smallest atom (hydrogen). Concluding that existed smaller particles than the atom. Hence, Dalton's model was wrong: atoms was divisible into smaller subatomic particles.
4) Then J.J Thompson proposed the plum pudding model, in which the electrons (plums) are embeded into a uniform positive mass (pudding).